Study: Bitcoin Wallet Attacks Rose Sharply in 2013

The Privacy Coin Guide Part 1

As interest picks up in crypto again, I want to share this post I made on privacy coins again to just give the basics of their evolution. This is only part 1, and parts 2 and 3 are not available in this format, but this part is informative and basic.
If you’re looking for a quick and easy way to assess what the best privacy coin in the current space is, which has the best features, or which is most likely to give high returns, then this is not that guide. My goal is to give you the power to make your own decisions, to clearly state my biases, and educate. I really wanted to understand this niche of the crypto-space due to my background and current loyalties[1], and grasp the nuances of the features, origins and timelines of technologies used in privacy coins, while not being anything close to a developer myself. This is going to be a 3-part series, starting with an overview and basic review of the technology, then looking at its implications, and ending with why I like a specific project. It might be mildly interesting or delightfully educational. Cryptocurrencies are young and existing privacy coins are deploying technology that is a work in progress. This series assumes a basic understanding of how blockchains work, specifically as used in cryptocurrencies. If you don’t have that understanding, might I suggest that you get it? [2],[3],[4] Because cryptocurrencies have a long way to go before reaching their end-game: when the world relies on the technology without understanding it. So, shall we do a deep dive into the privacy coin space?

FIRST THERE WAS BITCOIN

Cryptocurrencies allow you to tokenize value and track its exchange between hands over time, with transaction information verified by a distributed network of users. The most famous version of a cryptocurrency in use is Bitcoin, defined as peer-to-peer electronic cash. [5] Posted anonymously in 2008, the whitepaper seemed to be in direct response to the global financial meltdown and public distrust of the conventional banking and financing systems. Although cryptographic techniques are used in Bitcoin to ensure that (i) only the owner of a specific wallet has the authority to spend funds from that wallet, (ii) the public address is linked but cannot be traced by a third party to the private address (iii) the information is stored via cryptographic hashing in a merkle tree structure to ensure data integrity, the actual transaction information is publicly visible on the blockchain and can be traced back to the individual through chain analysis.[6] This has raised fears of possible financial censorship or the metaphorical tainting of money due to its origination point, as demonstrated in the Silk Road marketplace disaster.[7] This can happen because fiat money is usually exchanged for cryptocurrency at some point, as crypto-enthusiasts are born in the real world and inevitably cash out. There are already chain analysis firms and software that are increasingly efficient at tracking transactions on the Bitcoin blockchain.[8] This lack of privacy is one of the limitations of Bitcoin that has resulted in the creation of altcoins that experiment with the different features a cryptocurrency can have. Privacy coins are figuring out how to introduce privacy in addition to the payment network. The goal is to make the cryptocurrency fungible, each unit able to be exchanged for equal value without knowledge of its transaction history – like cash, while being publicly verifiable on a decentralized network. In other words, anyone can add the math up without being able to see the full details. Some privacy solutions and protocols have popped up as a result:

CRYPTONOTE – RING SIGNATURES AND STEALTH ADDRESSES

Used in: Monero and Particl as its successor RING-CT, Bytecoin
In December 2012, CryptoNote introduced the use of ring signatures and stealth addresses (along with other notable features such as its own codebase) to improve cryptocurrency privacy.[9] An updated CryptoNote version 2 came in October 2013 [10](though there is some dispute over this timeline [11]), also authored under the name Nicolas van Saberhagen. Ring signatures hide sender information by having the sender sign a transaction using a signature that could belong to multiple users. This makes a transaction untraceable. Stealth addresses allow a receiver to give a single address which generates a different public address for funds to be received at each time funds are sent to it. That makes a transaction unlinkable. In terms of privacy, CryptoNote gave us a protocol for untraceable and unlinkable transactions. The first implementation of CryptoNote technology was Bytecoin in March 2014 (timeline disputed [12]), which spawned many children (forks) in subsequent years, a notable example being Monero, based on CryptoNote v2 in April 2014.
RING SIGNATURES and STEALTH ADDRESSES

PROS

– Provides sender and receiver privacy
– Privacy can be default
– Mature technology
– Greater scalability with bulletproofs
– Does not require any third-party

CONS

– Privacy not very effective without high volume
-Does not hide transaction information if not combined with another protocol.

COINJOIN

Used in: Dash
Bitcoin developer Gregory Maxwell proposed a set of solutions to bring privacy to Bitcoin and cryptocurrencies, the first being CoinJoin (January 28 – Aug 22, 2013).[13],[14] CoinJoin (sometimes called CoinSwap) allows multiple users to combine their transactions into a single transaction, by receiving inputs from multiple users, and then sending their outputs to the multiple users, irrespective of who in the group the inputs came from. So, the receiver will get whatever output amount they were supposed to, but it cannot be directly traced to its origination input. Similar proposals include Coinshuffle in 2014 and Tumblebit in 2016, building on CoinJoin but not terribly popular [15],[16]. They fixed the need for a trusted third party to ‘mix’ the transactions. There are CoinJoin implementations that are being actively worked on but are not the most popular privacy solutions of today. A notable coin that uses CoinJoin technology is Dash, launched in January 2014, with masternodes in place of a trusted party.
COINJOIN

PROS

– Provides sender and receiver privacy
– Easy to implement on any cryptocurrency
– Lightweight
– Greater scalability with bulletproofs
– Mature technology

CONS

– Least anonymous privacy solution. Transaction amounts can be calculated
– Even without third-party mixer, depends on wealth centralization of masternodes

ZEROCOIN

Used in: Zcoin, PIVX
In May 2013, the Zerocoin protocol was introduced by John Hopkins University professor Matthew D. Green and his graduate students Ian Miers and Christina Garman.[17] In response to the need for use of a third party to do CoinJoin, the Zerocoin proposal allowed for a coin to be destroyed and remade in order to erase its history whenever it is spent. Zero-knowledge cryptography and zero-knowledge proofs are used to prove that the new coins for spending are being appropriately made. A zero-knowledge proof allows one party to prove to another that they know specific information, without revealing any information about it, other than the fact that they know it. Zerocoin was not accepted by the Bitcoin community as an implementation to be added to Bitcoin, so a new cryptocurrency had to be formed. Zcoin was the first cryptocurrency to implement the Zerocoin protocol in 2016. [18]
ZEROCOIN

PROS

– Provides sender and receiver privacy
– Supply can be audited
– Relatively mature technology
– Does not require a third-party

CONS

– Requires trusted setup (May not be required with Sigma protocol)
– Large proof sizes (not lightweight)
– Does not provide full privacy for transaction amounts

ZEROCASH

Used in: Zcash, Horizen, Komodo, Zclassic, Bitcoin Private
In May 2014, the current successor to the Zerocoin protocol, Zerocash, was created, also by Matthew Green and others (Eli Ben-Sasson, Alessandro Chiesa, Christina Garman, Matthew Green, Ian Miers, Eran Tromer, Madars Virza).[19] It improved upon the Zerocoin concept by taking advantage of zero-knowledge proofs called zk-snarks (zero knowledge succinct non-interactive arguments of knowledge). Unlike Zerocoin, which hid coin origins and payment history, Zerocash was faster, with smaller transaction sizes, and hides transaction information on the sender, receiver and amount. Zcash is the first cryptocurrency to implement the Zerocash protocol in 2016. [20]
ZEROCASH

PROS

– Provides full anonymity. Sender, receiver and amount hidden.
– Privacy can be default?
– Fast due to small proof sizes.
– Payment amount can be optionally disclosed for auditing
– Does not require any third-party

CONS

– Requires trusted setup. (May be improved with zt-starks technology)
– Supply cannot be audited. And coins can potentially be forged without proper implementation.
– Private transactions computationally intensive (improved with Sapling upgrade)

CONFIDENTIAL TRANSACTIONS

Used in: Monero and Particl with Ring Signatures as RING-CT
The next proposal from Maxwell was that of confidential transactions, proposed in June 2015 as part of the Sidechain Elements project from Blockstream, where Maxwell was Chief Technical Officer.[21],[22] It proposed to hide the transaction amount and asset type (e.g. deposits, currencies, shares), so that only the sender and receiver are aware of the amount, unless they choose to make the amount public. It uses homomorphic encryption[23] to encrypt the inputs and outputs by using blinding factors and a kind of ring signature in a commitment scheme, so the amount can be ‘committed’ to, without the amount actually being known. I’m terribly sorry if you now have the urge to go and research exactly what that means. The takeaway is that the transaction amount can be hidden from outsiders while being verifiable.
CONFIDENTIAL TRANSACTIONS

PROS

– Hides transaction amounts
– Privacy can be default
– Mature technology
– Does not require any third-party

CONS

– Only provides transaction amount privacy when used alone

RING-CT

Used in: Monero, Particl
Then came Ring Confidential transactions, proposed by Shen-Noether of Monero Research Labs in October 2015.[24] RingCT combines the use of ring signatures for hiding sender information, with the use of confidential transactions (which also uses ring signatures) for hiding amounts. The proposal described a new type of ring signature, A Multi-layered Linkable Spontaneous Anonymous Group signature which “allows for hidden amounts, origins and destinations of transactions with reasonable efficiency and verifiable, trustless coin generation”.[25] RingCT was implemented in Monero in January 2017 and made mandatory after September 2017.
RING -CONFIDENTIAL TRANSACTIONS

PROS

– Provides full anonymity. Hides transaction amounts and receiver privacy
– Privacy can be default
– Mature technology
– Greater scalability with bulletproofs
– Does not require any third-party

CONS

– Privacy not very effective without high volume

MIMBLEWIMBLE

Used in: Grin
Mimblewimble was proposed in July 2016 by pseudonymous contributor Tom Elvis Jedusorand further developed in October 2016 by Andrew Poelstra.[26],[27] Mimblewimble is a “privacy and fungibility focused cryptocoin transaction structure proposal”.[28] The key words are transaction structure proposal, so the way the blockchain is built is different, in order to accommodate privacy and fungibility features. Mimblewimble uses the concept of Confidential transactions to keep amounts hidden, looks at private keys and transaction information to prove ownership of funds rather than using addresses, and bundles transactions together instead of listing them separately on the blockchain. It also introduces a novel method of pruning the blockchain. Grin is a cryptocurrency in development that is applying Mimblewimble. Mimblewimble is early in development and you can understand it more here [29].
MIMBLEWIMBLE

PROS

– Hides transaction amounts and receiver privacy
– Privacy is on by default
– Lightweight
– No public addresses?

CONS

– Privacy not very effective without high volume
– Sender and receiver must both be online
– Relatively new technology

ZEXE

Fresh off the minds of brilliant cryptographers (Sean Bowe, Alessandro Chiesa, Matthew Green, Ian Miers, Pratyush Mishra, Howard Wu), in October 2018 Zexe proposed a new cryptographic primitive called ‘decentralized private computation.[30] It allows users of a decentralized ledger to “execute offline computations that result in transactions”[31], but also keeps transaction amounts hidden and allows transaction validation to happen at any time regardless of computations being done online. This can have far reaching implications for privacy coins in the future. Consider cases where transactions need to be automatic and private, without both parties being present.

NETWORK PRIVACY

Privacy technologies that look at network privacy as nodes communicate with each other on the network are important considerations, rather than just looking at privacy on the blockchain itself. Anonymous layers encrypt and/or reroute data as it moves among peers, so it is not obvious who they originate from on the network. They are used to protect against surveillance or censorship from ISPs and governments. The Invisible Internet Project (I2P) is an anonymous network layer that uses end to end encryption for peers on a network to communicate with each other.[32] Its history dates back to 2003. Kovri is a Monero created implementation of I2P.[33] The Onion Router (Tor) is another anonymity layer [34]) that Verge is a privacy cryptocurrency that uses. But its historical link to the US government may be is concerning to some[35]. Dandelion transaction relay is also an upcoming Bitcoin improvement proposal (BIP) that scrambles IP data that will provide network privacy for Bitcoin as transaction and other information is transmitted.[36],[37],[38]

UPCOMING

Monero completed bulletproofs protocol updates that reduce RINGCT transaction sizes and thus transaction fee costs. (Bulletproofs are a replacement for range proofs used in confidential transactions that aid in encrypting inputs and outputs by making sure they add to zero).
Sigma Protocol – being actively researched by Zcoin team as of 2018 to replace Zerocoin protocol so that a trusted setup is not required.[39] There is a possible replacement for zk-snarks, called zk-starks, another form of zero-knowledge proof technology, that may make a trusted set-up unnecessary for zero-knowledege proof coins.[40]

PART 1 CONCLUSION OF THE PRIVACY COIN GUIDE ON THE TECHNOLOGY BEHIND PRIVACY COINS

Although Bitcoin is still a groundbreaking technology that gives us a trust-less transaction system, it has failed to live up to its expectations of privacy. Over time, new privacy technologies have arrived and are arriving with innovative and exciting solutions for Bitcoin’s lack of fungibility. It is important to note that these technologies are built on prior research and application, but we are considering their use in cryptocurrencies. Protocols are proposed based on cryptographic concepts that show how they would work, and then developers actually implement them. Please note that I did not include the possibility of improper implementation as a disadvantage, and the advantages assume that the technical development is well done. A very important point is that coins can also adapt new privacy technologies as their merits become obvious, even as they start with a specific privacy protocol. Furthermore, I am, unfortunately, positive that this is not an exhaustive overview and I am only covering publicized solutions. Next, we’ll talk more about the pros and cons and give an idea of how the coins can be compared.

There's a video version that can be watched, and you can find out how to get the second two parts if you want on my website (video link on the page): https://cryptoramble.com/guide-on-privacy-coins/
submitted by CryptoRamble to ethereum [link] [comments]

The Privacy Coin Guide Part 1

As interest picks up in crypto again, I want to share this post I made on privacy coins again to just give the basics of their evolution. This is only part 1, and parts 2 and 3 are not available in this format, but this part is informative and basic.
If you’re looking for a quick and easy way to assess what the best privacy coin in the current space is, which has the best features, or which is most likely to give high returns, then this is not that guide. My goal is to give you the power to make your own decisions, to clearly state my biases, and educate. I really wanted to understand this niche of the crypto-space due to my background and current loyalties[1], and grasp the nuances of the features, origins and timelines of technologies used in privacy coins, while not being anything close to a developer myself. This is going to be a 3-part series, starting with an overview and basic review of the technology, then looking at its implications, and ending with why I like a specific project. It might be mildly interesting or delightfully educational. Cryptocurrencies are young and existing privacy coins are deploying technology that is a work in progress. This series assumes a basic understanding of how blockchains work, specifically as used in cryptocurrencies. If you don’t have that understanding, might I suggest that you get it? [2],[3],[4] Because cryptocurrencies have a long way to go before reaching their end-game: when the world relies on the technology without understanding it. So, shall we do a deep dive into the privacy coin space?

FIRST THERE WAS BITCOIN

Cryptocurrencies allow you to tokenize value and track its exchange between hands over time, with transaction information verified by a distributed network of users. The most famous version of a cryptocurrency in use is Bitcoin, defined as peer-to-peer electronic cash. [5] Posted anonymously in 2008, the whitepaper seemed to be in direct response to the global financial meltdown and public distrust of the conventional banking and financing systems. Although cryptographic techniques are used in Bitcoin to ensure that (i) only the owner of a specific wallet has the authority to spend funds from that wallet, (ii) the public address is linked but cannot be traced by a third party to the private address (iii) the information is stored via cryptographic hashing in a merkle tree structure to ensure data integrity, the actual transaction information is publicly visible on the blockchain and can be traced back to the individual through chain analysis.[6] This has raised fears of possible financial censorship or the metaphorical tainting of money due to its origination point, as demonstrated in the Silk Road marketplace disaster.[7] This can happen because fiat money is usually exchanged for cryptocurrency at some point, as crypto-enthusiasts are born in the real world and inevitably cash out. There are already chain analysis firms and software that are increasingly efficient at tracking transactions on the Bitcoin blockchain.[8] This lack of privacy is one of the limitations of Bitcoin that has resulted in the creation of altcoins that experiment with the different features a cryptocurrency can have. Privacy coins are figuring out how to introduce privacy in addition to the payment network. The goal is to make the cryptocurrency fungible, each unit able to be exchanged for equal value without knowledge of its transaction history – like cash, while being publicly verifiable on a decentralized network. In other words, anyone can add the math up without being able to see the full details. Some privacy solutions and protocols have popped up as a result:

CRYPTONOTE – RING SIGNATURES AND STEALTH ADDRESSES

Used in: Monero and Particl as its successor RING-CT, Bytecoin
In December 2012, CryptoNote introduced the use of ring signatures and stealth addresses (along with other notable features such as its own codebase) to improve cryptocurrency privacy.[9] An updated CryptoNote version 2 came in October 2013 [10](though there is some dispute over this timeline [11]), also authored under the name Nicolas van Saberhagen. Ring signatures hide sender information by having the sender sign a transaction using a signature that could belong to multiple users. This makes a transaction untraceable. Stealth addresses allow a receiver to give a single address which generates a different public address for funds to be received at each time funds are sent to it. That makes a transaction unlinkable. In terms of privacy, CryptoNote gave us a protocol for untraceable and unlinkable transactions. The first implementation of CryptoNote technology was Bytecoin in March 2014 (timeline disputed [12]), which spawned many children (forks) in subsequent years, a notable example being Monero, based on CryptoNote v2 in April 2014.
RING SIGNATURES and STEALTH ADDRESSES

PROS

– Provides sender and receiver privacy
– Privacy can be default
– Mature technology
– Greater scalability with bulletproofs
– Does not require any third-party

CONS

– Privacy not very effective without high volume
-Does not hide transaction information if not combined with another protocol.

COINJOIN

Used in: Dash
Bitcoin developer Gregory Maxwell proposed a set of solutions to bring privacy to Bitcoin and cryptocurrencies, the first being CoinJoin (January 28 – Aug 22, 2013).[13],[14] CoinJoin (sometimes called CoinSwap) allows multiple users to combine their transactions into a single transaction, by receiving inputs from multiple users, and then sending their outputs to the multiple users, irrespective of who in the group the inputs came from. So, the receiver will get whatever output amount they were supposed to, but it cannot be directly traced to its origination input. Similar proposals include Coinshuffle in 2014 and Tumblebit in 2016, building on CoinJoin but not terribly popular [15],[16]. They fixed the need for a trusted third party to ‘mix’ the transactions. There are CoinJoin implementations that are being actively worked on but are not the most popular privacy solutions of today. A notable coin that uses CoinJoin technology is Dash, launched in January 2014, with masternodes in place of a trusted party.
COINJOIN

PROS

– Provides sender and receiver privacy
– Easy to implement on any cryptocurrency
– Lightweight
– Greater scalability with bulletproofs
– Mature technology

CONS

– Least anonymous privacy solution. Transaction amounts can be calculated
– Even without third-party mixer, depends on wealth centralization of masternodes

ZEROCOIN

Used in: Zcoin, PIVX
In May 2013, the Zerocoin protocol was introduced by John Hopkins University professor Matthew D. Green and his graduate students Ian Miers and Christina Garman.[17] In response to the need for use of a third party to do CoinJoin, the Zerocoin proposal allowed for a coin to be destroyed and remade in order to erase its history whenever it is spent. Zero-knowledge cryptography and zero-knowledge proofs are used to prove that the new coins for spending are being appropriately made. A zero-knowledge proof allows one party to prove to another that they know specific information, without revealing any information about it, other than the fact that they know it. Zerocoin was not accepted by the Bitcoin community as an implementation to be added to Bitcoin, so a new cryptocurrency had to be formed. Zcoin was the first cryptocurrency to implement the Zerocoin protocol in 2016. [18]
ZEROCOIN

PROS

– Provides sender and receiver privacy
– Supply can be audited
– Relatively mature technology
– Does not require a third-party

CONS

– Requires trusted setup (May not be required with Sigma protocol)
– Large proof sizes (not lightweight)
– Does not provide full privacy for transaction amounts

ZEROCASH

Used in: Zcash, Horizen, Komodo, Zclassic, Bitcoin Private
In May 2014, the current successor to the Zerocoin protocol, Zerocash, was created, also by Matthew Green and others (Eli Ben-Sasson, Alessandro Chiesa, Christina Garman, Matthew Green, Ian Miers, Eran Tromer, Madars Virza).[19] It improved upon the Zerocoin concept by taking advantage of zero-knowledge proofs called zk-snarks (zero knowledge succinct non-interactive arguments of knowledge). Unlike Zerocoin, which hid coin origins and payment history, Zerocash was faster, with smaller transaction sizes, and hides transaction information on the sender, receiver and amount. Zcash is the first cryptocurrency to implement the Zerocash protocol in 2016. [20]
ZEROCASH

PROS

– Provides full anonymity. Sender, receiver and amount hidden.
– Privacy can be default?
– Fast due to small proof sizes.
– Payment amount can be optionally disclosed for auditing
– Does not require any third-party

CONS

– Requires trusted setup. (May be improved with zt-starks technology)
– Supply cannot be audited. And coins can potentially be forged without proper implementation.
– Private transactions computationally intensive (improved with Sapling upgrade)

CONFIDENTIAL TRANSACTIONS

Used in: Monero and Particl with Ring Signatures as RING-CT
The next proposal from Maxwell was that of confidential transactions, proposed in June 2015 as part of the Sidechain Elements project from Blockstream, where Maxwell was Chief Technical Officer.[21],[22] It proposed to hide the transaction amount and asset type (e.g. deposits, currencies, shares), so that only the sender and receiver are aware of the amount, unless they choose to make the amount public. It uses homomorphic encryption[23] to encrypt the inputs and outputs by using blinding factors and a kind of ring signature in a commitment scheme, so the amount can be ‘committed’ to, without the amount actually being known. I’m terribly sorry if you now have the urge to go and research exactly what that means. The takeaway is that the transaction amount can be hidden from outsiders while being verifiable.
CONFIDENTIAL TRANSACTIONS

PROS

– Hides transaction amounts
– Privacy can be default
– Mature technology
– Does not require any third-party

CONS

– Only provides transaction amount privacy when used alone

RING-CT

Used in: Monero, Particl
Then came Ring Confidential transactions, proposed by Shen-Noether of Monero Research Labs in October 2015.[24] RingCT combines the use of ring signatures for hiding sender information, with the use of confidential transactions (which also uses ring signatures) for hiding amounts. The proposal described a new type of ring signature, A Multi-layered Linkable Spontaneous Anonymous Group signature which “allows for hidden amounts, origins and destinations of transactions with reasonable efficiency and verifiable, trustless coin generation”.[25] RingCT was implemented in Monero in January 2017 and made mandatory after September 2017.
RING -CONFIDENTIAL TRANSACTIONS

PROS

– Provides full anonymity. Hides transaction amounts and receiver privacy
– Privacy can be default
– Mature technology
– Greater scalability with bulletproofs
– Does not require any third-party

CONS

– Privacy not very effective without high volume

MIMBLEWIMBLE

Used in: Grin
Mimblewimble was proposed in July 2016 by pseudonymous contributor Tom Elvis Jedusorand further developed in October 2016 by Andrew Poelstra.[26],[27] Mimblewimble is a “privacy and fungibility focused cryptocoin transaction structure proposal”.[28] The key words are transaction structure proposal, so the way the blockchain is built is different, in order to accommodate privacy and fungibility features. Mimblewimble uses the concept of Confidential transactions to keep amounts hidden, looks at private keys and transaction information to prove ownership of funds rather than using addresses, and bundles transactions together instead of listing them separately on the blockchain. It also introduces a novel method of pruning the blockchain. Grin is a cryptocurrency in development that is applying Mimblewimble. Mimblewimble is early in development and you can understand it more here [29].
MIMBLEWIMBLE

PROS

– Hides transaction amounts and receiver privacy
– Privacy is on by default
– Lightweight
– No public addresses?

CONS

– Privacy not very effective without high volume
– Sender and receiver must both be online
– Relatively new technology

ZEXE

Fresh off the minds of brilliant cryptographers (Sean Bowe, Alessandro Chiesa, Matthew Green, Ian Miers, Pratyush Mishra, Howard Wu), in October 2018 Zexe proposed a new cryptographic primitive called ‘decentralized private computation.[30] It allows users of a decentralized ledger to “execute offline computations that result in transactions”[31], but also keeps transaction amounts hidden and allows transaction validation to happen at any time regardless of computations being done online. This can have far reaching implications for privacy coins in the future. Consider cases where transactions need to be automatic and private, without both parties being present.

NETWORK PRIVACY

Privacy technologies that look at network privacy as nodes communicate with each other on the network are important considerations, rather than just looking at privacy on the blockchain itself. Anonymous layers encrypt and/or reroute data as it moves among peers, so it is not obvious who they originate from on the network. They are used to protect against surveillance or censorship from ISPs and governments. The Invisible Internet Project (I2P) is an anonymous network layer that uses end to end encryption for peers on a network to communicate with each other.[32] Its history dates back to 2003. Kovri is a Monero created implementation of I2P.[33] The Onion Router (Tor) is another anonymity layer [34]) that Verge is a privacy cryptocurrency that uses. But its historical link to the US government may be is concerning to some[35]. Dandelion transaction relay is also an upcoming Bitcoin improvement proposal (BIP) that scrambles IP data that will provide network privacy for Bitcoin as transaction and other information is transmitted.[36],[37],[38]

UPCOMING

Monero completed bulletproofs protocol updates that reduce RINGCT transaction sizes and thus transaction fee costs. (Bulletproofs are a replacement for range proofs used in confidential transactions that aid in encrypting inputs and outputs by making sure they add to zero).
Sigma Protocol – being actively researched by Zcoin team as of 2018 to replace Zerocoin protocol so that a trusted setup is not required.[39] There is a possible replacement for zk-snarks, called zk-starks, another form of zero-knowledge proof technology, that may make a trusted set-up unnecessary for zero-knowledege proof coins.[40]

PART 1 CONCLUSION OF THE PRIVACY COIN GUIDE ON THE TECHNOLOGY BEHIND PRIVACY COINS

Although Bitcoin is still a groundbreaking technology that gives us a trust-less transaction system, it has failed to live up to its expectations of privacy. Over time, new privacy technologies have arrived and are arriving with innovative and exciting solutions for Bitcoin’s lack of fungibility. It is important to note that these technologies are built on prior research and application, but we are considering their use in cryptocurrencies. Protocols are proposed based on cryptographic concepts that show how they would work, and then developers actually implement them. Please note that I did not include the possibility of improper implementation as a disadvantage, and the advantages assume that the technical development is well done. A very important point is that coins can also adapt new privacy technologies as their merits become obvious, even as they start with a specific privacy protocol. Furthermore, I am, unfortunately, positive that this is not an exhaustive overview and I am only covering publicized solutions. Next, we’ll talk more about the pros and cons and give an idea of how the coins can be compared.

There's a video version that can be watched, and you can find out how to get the second two parts if you want on my website (video link on the page): https://cryptoramble.com/guide-on-privacy-coins/
submitted by CryptoRamble to privacycoins [link] [comments]

The Privacy Coin Guide Part 1

As interest picks up in crypto again, I want to share this post I made on privacy coins again to just give the basics of their evolution. This is only part 1, and parts 2 and 3 are not available in this format, but this part is informative and basic.
If you’re looking for a quick and easy way to assess what the best privacy coin in the current space is, which has the best features, or which is most likely to give high returns, then this is not that guide. My goal is to give you the power to make your own decisions, to clearly state my biases, and educate. I really wanted to understand this niche of the crypto-space due to my background and current loyalties[1], and grasp the nuances of the features, origins and timelines of technologies used in privacy coins, while not being anything close to a developer myself. This is going to be a 3-part series, starting with an overview and basic review of the technology, then looking at its implications, and ending with why I like a specific project. It might be mildly interesting or delightfully educational. Cryptocurrencies are young and existing privacy coins are deploying technology that is a work in progress. This series assumes a basic understanding of how blockchains work, specifically as used in cryptocurrencies. If you don’t have that understanding, might I suggest that you get it? [2],[3],[4] Because cryptocurrencies have a long way to go before reaching their end-game: when the world relies on the technology without understanding it. So, shall we do a deep dive into the privacy coin space?

FIRST THERE WAS BITCOIN

Cryptocurrencies allow you to tokenize value and track its exchange between hands over time, with transaction information verified by a distributed network of users. The most famous version of a cryptocurrency in use is Bitcoin, defined as peer-to-peer electronic cash. [5] Posted anonymously in 2008, the whitepaper seemed to be in direct response to the global financial meltdown and public distrust of the conventional banking and financing systems. Although cryptographic techniques are used in Bitcoin to ensure that (i) only the owner of a specific wallet has the authority to spend funds from that wallet, (ii) the public address is linked but cannot be traced by a third party to the private address (iii) the information is stored via cryptographic hashing in a merkle tree structure to ensure data integrity, the actual transaction information is publicly visible on the blockchain and can be traced back to the individual through chain analysis.[6] This has raised fears of possible financial censorship or the metaphorical tainting of money due to its origination point, as demonstrated in the Silk Road marketplace disaster.[7] This can happen because fiat money is usually exchanged for cryptocurrency at some point, as crypto-enthusiasts are born in the real world and inevitably cash out. There are already chain analysis firms and software that are increasingly efficient at tracking transactions on the Bitcoin blockchain.[8] This lack of privacy is one of the limitations of Bitcoin that has resulted in the creation of altcoins that experiment with the different features a cryptocurrency can have. Privacy coins are figuring out how to introduce privacy in addition to the payment network. The goal is to make the cryptocurrency fungible, each unit able to be exchanged for equal value without knowledge of its transaction history – like cash, while being publicly verifiable on a decentralized network. In other words, anyone can add the math up without being able to see the full details. Some privacy solutions and protocols have popped up as a result:

CRYPTONOTE – RING SIGNATURES AND STEALTH ADDRESSES

Used in: Monero and Particl as its successor RING-CT, Bytecoin
In December 2012, CryptoNote introduced the use of ring signatures and stealth addresses (along with other notable features such as its own codebase) to improve cryptocurrency privacy.[9] An updated CryptoNote version 2 came in October 2013 [10](though there is some dispute over this timeline [11]), also authored under the name Nicolas van Saberhagen. Ring signatures hide sender information by having the sender sign a transaction using a signature that could belong to multiple users. This makes a transaction untraceable. Stealth addresses allow a receiver to give a single address which generates a different public address for funds to be received at each time funds are sent to it. That makes a transaction unlinkable. In terms of privacy, CryptoNote gave us a protocol for untraceable and unlinkable transactions. The first implementation of CryptoNote technology was Bytecoin in March 2014 (timeline disputed [12]), which spawned many children (forks) in subsequent years, a notable example being Monero, based on CryptoNote v2 in April 2014.
RING SIGNATURES and STEALTH ADDRESSES

PROS

– Provides sender and receiver privacy
– Privacy can be default
– Mature technology
– Greater scalability with bulletproofs
– Does not require any third-party

CONS

– Privacy not very effective without high volume
-Does not hide transaction information if not combined with another protocol.

COINJOIN

Used in: Dash
Bitcoin developer Gregory Maxwell proposed a set of solutions to bring privacy to Bitcoin and cryptocurrencies, the first being CoinJoin (January 28 – Aug 22, 2013).[13],[14] CoinJoin (sometimes called CoinSwap) allows multiple users to combine their transactions into a single transaction, by receiving inputs from multiple users, and then sending their outputs to the multiple users, irrespective of who in the group the inputs came from. So, the receiver will get whatever output amount they were supposed to, but it cannot be directly traced to its origination input. Similar proposals include Coinshuffle in 2014 and Tumblebit in 2016, building on CoinJoin but not terribly popular [15],[16]. They fixed the need for a trusted third party to ‘mix’ the transactions. There are CoinJoin implementations that are being actively worked on but are not the most popular privacy solutions of today. A notable coin that uses CoinJoin technology is Dash, launched in January 2014, with masternodes in place of a trusted party.
COINJOIN

PROS

– Provides sender and receiver privacy
– Easy to implement on any cryptocurrency
– Lightweight
– Greater scalability with bulletproofs
– Mature technology

CONS

– Least anonymous privacy solution. Transaction amounts can be calculated
– Even without third-party mixer, depends on wealth centralization of masternodes

ZEROCOIN

Used in: Zcoin, PIVX
In May 2013, the Zerocoin protocol was introduced by John Hopkins University professor Matthew D. Green and his graduate students Ian Miers and Christina Garman.[17] In response to the need for use of a third party to do CoinJoin, the Zerocoin proposal allowed for a coin to be destroyed and remade in order to erase its history whenever it is spent. Zero-knowledge cryptography and zero-knowledge proofs are used to prove that the new coins for spending are being appropriately made. A zero-knowledge proof allows one party to prove to another that they know specific information, without revealing any information about it, other than the fact that they know it. Zerocoin was not accepted by the Bitcoin community as an implementation to be added to Bitcoin, so a new cryptocurrency had to be formed. Zcoin was the first cryptocurrency to implement the Zerocoin protocol in 2016. [18]
ZEROCOIN

PROS

– Provides sender and receiver privacy
– Supply can be audited
– Relatively mature technology
– Does not require a third-party

CONS

– Requires trusted setup (May not be required with Sigma protocol)
– Large proof sizes (not lightweight)
– Does not provide full privacy for transaction amounts

ZEROCASH

Used in: Zcash, Horizen, Komodo, Zclassic, Bitcoin Private
In May 2014, the current successor to the Zerocoin protocol, Zerocash, was created, also by Matthew Green and others (Eli Ben-Sasson, Alessandro Chiesa, Christina Garman, Matthew Green, Ian Miers, Eran Tromer, Madars Virza).[19] It improved upon the Zerocoin concept by taking advantage of zero-knowledge proofs called zk-snarks (zero knowledge succinct non-interactive arguments of knowledge). Unlike Zerocoin, which hid coin origins and payment history, Zerocash was faster, with smaller transaction sizes, and hides transaction information on the sender, receiver and amount. Zcash is the first cryptocurrency to implement the Zerocash protocol in 2016. [20]
ZEROCASH

PROS

– Provides full anonymity. Sender, receiver and amount hidden.
– Privacy can be default?
– Fast due to small proof sizes.
– Payment amount can be optionally disclosed for auditing
– Does not require any third-party

CONS

– Requires trusted setup. (May be improved with zt-starks technology)
– Supply cannot be audited. And coins can potentially be forged without proper implementation.
– Private transactions computationally intensive (improved with Sapling upgrade)

CONFIDENTIAL TRANSACTIONS

Used in: Monero and Particl with Ring Signatures as RING-CT
The next proposal from Maxwell was that of confidential transactions, proposed in June 2015 as part of the Sidechain Elements project from Blockstream, where Maxwell was Chief Technical Officer.[21],[22] It proposed to hide the transaction amount and asset type (e.g. deposits, currencies, shares), so that only the sender and receiver are aware of the amount, unless they choose to make the amount public. It uses homomorphic encryption[23] to encrypt the inputs and outputs by using blinding factors and a kind of ring signature in a commitment scheme, so the amount can be ‘committed’ to, without the amount actually being known. I’m terribly sorry if you now have the urge to go and research exactly what that means. The takeaway is that the transaction amount can be hidden from outsiders while being verifiable.
CONFIDENTIAL TRANSACTIONS

PROS

– Hides transaction amounts
– Privacy can be default
– Mature technology
– Does not require any third-party

CONS

– Only provides transaction amount privacy when used alone

RING-CT

Used in: Monero, Particl
Then came Ring Confidential transactions, proposed by Shen-Noether of Monero Research Labs in October 2015.[24] RingCT combines the use of ring signatures for hiding sender information, with the use of confidential transactions (which also uses ring signatures) for hiding amounts. The proposal described a new type of ring signature, A Multi-layered Linkable Spontaneous Anonymous Group signature which “allows for hidden amounts, origins and destinations of transactions with reasonable efficiency and verifiable, trustless coin generation”.[25] RingCT was implemented in Monero in January 2017 and made mandatory after September 2017.
RING -CONFIDENTIAL TRANSACTIONS

PROS

– Provides full anonymity. Hides transaction amounts and receiver privacy
– Privacy can be default
– Mature technology
– Greater scalability with bulletproofs
– Does not require any third-party

CONS

– Privacy not very effective without high volume

MIMBLEWIMBLE

Used in: Grin
Mimblewimble was proposed in July 2016 by pseudonymous contributor Tom Elvis Jedusorand further developed in October 2016 by Andrew Poelstra.[26],[27] Mimblewimble is a “privacy and fungibility focused cryptocoin transaction structure proposal”.[28] The key words are transaction structure proposal, so the way the blockchain is built is different, in order to accommodate privacy and fungibility features. Mimblewimble uses the concept of Confidential transactions to keep amounts hidden, looks at private keys and transaction information to prove ownership of funds rather than using addresses, and bundles transactions together instead of listing them separately on the blockchain. It also introduces a novel method of pruning the blockchain. Grin is a cryptocurrency in development that is applying Mimblewimble. Mimblewimble is early in development and you can understand it more here [29].
MIMBLEWIMBLE

PROS

– Hides transaction amounts and receiver privacy
– Privacy is on by default
– Lightweight
– No public addresses?

CONS

– Privacy not very effective without high volume
– Sender and receiver must both be online
– Relatively new technology

ZEXE

Fresh off the minds of brilliant cryptographers (Sean Bowe, Alessandro Chiesa, Matthew Green, Ian Miers, Pratyush Mishra, Howard Wu), in October 2018 Zexe proposed a new cryptographic primitive called ‘decentralized private computation.[30] It allows users of a decentralized ledger to “execute offline computations that result in transactions”[31], but also keeps transaction amounts hidden and allows transaction validation to happen at any time regardless of computations being done online. This can have far reaching implications for privacy coins in the future. Consider cases where transactions need to be automatic and private, without both parties being present.

NETWORK PRIVACY

Privacy technologies that look at network privacy as nodes communicate with each other on the network are important considerations, rather than just looking at privacy on the blockchain itself. Anonymous layers encrypt and/or reroute data as it moves among peers, so it is not obvious who they originate from on the network. They are used to protect against surveillance or censorship from ISPs and governments. The Invisible Internet Project (I2P) is an anonymous network layer that uses end to end encryption for peers on a network to communicate with each other.[32] Its history dates back to 2003. Kovri is a Monero created implementation of I2P.[33] The Onion Router (Tor) is another anonymity layer [34]) that Verge is a privacy cryptocurrency that uses. But its historical link to the US government may be is concerning to some[35]. Dandelion transaction relay is also an upcoming Bitcoin improvement proposal (BIP) that scrambles IP data that will provide network privacy for Bitcoin as transaction and other information is transmitted.[36],[37],[38]

UPCOMING

Monero completed bulletproofs protocol updates that reduce RINGCT transaction sizes and thus transaction fee costs. (Bulletproofs are a replacement for range proofs used in confidential transactions that aid in encrypting inputs and outputs by making sure they add to zero).
Sigma Protocol – being actively researched by Zcoin team as of 2018 to replace Zerocoin protocol so that a trusted setup is not required.[39] There is a possible replacement for zk-snarks, called zk-starks, another form of zero-knowledge proof technology, that may make a trusted set-up unnecessary for zero-knowledege proof coins.[40]

PART 1 CONCLUSION OF THE PRIVACY COIN GUIDE ON THE TECHNOLOGY BEHIND PRIVACY COINS

Although Bitcoin is still a groundbreaking technology that gives us a trust-less transaction system, it has failed to live up to its expectations of privacy. Over time, new privacy technologies have arrived and are arriving with innovative and exciting solutions for Bitcoin’s lack of fungibility. It is important to note that these technologies are built on prior research and application, but we are considering their use in cryptocurrencies. Protocols are proposed based on cryptographic concepts that show how they would work, and then developers actually implement them. Please note that I did not include the possibility of improper implementation as a disadvantage, and the advantages assume that the technical development is well done. A very important point is that coins can also adapt new privacy technologies as their merits become obvious, even as they start with a specific privacy protocol. Furthermore, I am, unfortunately, positive that this is not an exhaustive overview and I am only covering publicized solutions. Next, we’ll talk more about the pros and cons and give an idea of how the coins can be compared.

There's a video version that can be watched, and you can find out how to get the second two parts if you want on my website (video link on the page): https://cryptoramble.com/guide-on-privacy-coins/
submitted by CryptoRamble to CryptoCurrencies [link] [comments]

The Privacy Coin Guide Part 1

As interest picks up in crypto again, I want to share this post I made on privacy coins again to just give the basics of their evolution. This is only part 1, and parts 2 and 3 are not available in this format, but this part is informative and basic.
If you’re looking for a quick and easy way to assess what the best privacy coin in the current space is, which has the best features, or which is most likely to give high returns, then this is not that guide. My goal is to give you the power to make your own decisions, to clearly state my biases, and educate. I really wanted to understand this niche of the crypto-space due to my background and current loyalties[1], and grasp the nuances of the features, origins and timelines of technologies used in privacy coins, while not being anything close to a developer myself. This is going to be a 3-part series, starting with an overview and basic review of the technology, then looking at its implications, and ending with why I like a specific project. It might be mildly interesting or delightfully educational. Cryptocurrencies are young and existing privacy coins are deploying technology that is a work in progress. This series assumes a basic understanding of how blockchains work, specifically as used in cryptocurrencies. If you don’t have that understanding, might I suggest that you get it? [2],[3],[4] Because cryptocurrencies have a long way to go before reaching their end-game: when the world relies on the technology without understanding it. So, shall we do a deep dive into the privacy coin space?

FIRST THERE WAS BITCOIN

Cryptocurrencies allow you to tokenize value and track its exchange between hands over time, with transaction information verified by a distributed network of users. The most famous version of a cryptocurrency in use is Bitcoin, defined as peer-to-peer electronic cash. [5] Posted anonymously in 2008, the whitepaper seemed to be in direct response to the global financial meltdown and public distrust of the conventional banking and financing systems. Although cryptographic techniques are used in Bitcoin to ensure that (i) only the owner of a specific wallet has the authority to spend funds from that wallet, (ii) the public address is linked but cannot be traced by a third party to the private address (iii) the information is stored via cryptographic hashing in a merkle tree structure to ensure data integrity, the actual transaction information is publicly visible on the blockchain and can be traced back to the individual through chain analysis.[6] This has raised fears of possible financial censorship or the metaphorical tainting of money due to its origination point, as demonstrated in the Silk Road marketplace disaster.[7] This can happen because fiat money is usually exchanged for cryptocurrency at some point, as crypto-enthusiasts are born in the real world and inevitably cash out. There are already chain analysis firms and software that are increasingly efficient at tracking transactions on the Bitcoin blockchain.[8] This lack of privacy is one of the limitations of Bitcoin that has resulted in the creation of altcoins that experiment with the different features a cryptocurrency can have. Privacy coins are figuring out how to introduce privacy in addition to the payment network. The goal is to make the cryptocurrency fungible, each unit able to be exchanged for equal value without knowledge of its transaction history – like cash, while being publicly verifiable on a decentralized network. In other words, anyone can add the math up without being able to see the full details. Some privacy solutions and protocols have popped up as a result:

CRYPTONOTE – RING SIGNATURES AND STEALTH ADDRESSES

Used in: Monero and Particl as its successor RING-CT, Bytecoin
In December 2012, CryptoNote introduced the use of ring signatures and stealth addresses (along with other notable features such as its own codebase) to improve cryptocurrency privacy.[9] An updated CryptoNote version 2 came in October 2013 [10](though there is some dispute over this timeline [11]), also authored under the name Nicolas van Saberhagen. Ring signatures hide sender information by having the sender sign a transaction using a signature that could belong to multiple users. This makes a transaction untraceable. Stealth addresses allow a receiver to give a single address which generates a different public address for funds to be received at each time funds are sent to it. That makes a transaction unlinkable. In terms of privacy, CryptoNote gave us a protocol for untraceable and unlinkable transactions. The first implementation of CryptoNote technology was Bytecoin in March 2014 (timeline disputed [12]), which spawned many children (forks) in subsequent years, a notable example being Monero, based on CryptoNote v2 in April 2014.
RING SIGNATURES and STEALTH ADDRESSES

PROS

– Provides sender and receiver privacy
– Privacy can be default
– Mature technology
– Greater scalability with bulletproofs
– Does not require any third-party

CONS

– Privacy not very effective without high volume
-Does not hide transaction information if not combined with another protocol.

COINJOIN

Used in: Dash
Bitcoin developer Gregory Maxwell proposed a set of solutions to bring privacy to Bitcoin and cryptocurrencies, the first being CoinJoin (January 28 – Aug 22, 2013).[13],[14] CoinJoin (sometimes called CoinSwap) allows multiple users to combine their transactions into a single transaction, by receiving inputs from multiple users, and then sending their outputs to the multiple users, irrespective of who in the group the inputs came from. So, the receiver will get whatever output amount they were supposed to, but it cannot be directly traced to its origination input. Similar proposals include Coinshuffle in 2014 and Tumblebit in 2016, building on CoinJoin but not terribly popular [15],[16]. They fixed the need for a trusted third party to ‘mix’ the transactions. There are CoinJoin implementations that are being actively worked on but are not the most popular privacy solutions of today. A notable coin that uses CoinJoin technology is Dash, launched in January 2014, with masternodes in place of a trusted party.
COINJOIN

PROS

– Provides sender and receiver privacy
– Easy to implement on any cryptocurrency
– Lightweight
– Greater scalability with bulletproofs
– Mature technology

CONS

– Least anonymous privacy solution. Transaction amounts can be calculated
– Even without third-party mixer, depends on wealth centralization of masternodes

ZEROCOIN

Used in: Zcoin, PIVX
In May 2013, the Zerocoin protocol was introduced by John Hopkins University professor Matthew D. Green and his graduate students Ian Miers and Christina Garman.[17] In response to the need for use of a third party to do CoinJoin, the Zerocoin proposal allowed for a coin to be destroyed and remade in order to erase its history whenever it is spent. Zero-knowledge cryptography and zero-knowledge proofs are used to prove that the new coins for spending are being appropriately made. A zero-knowledge proof allows one party to prove to another that they know specific information, without revealing any information about it, other than the fact that they know it. Zerocoin was not accepted by the Bitcoin community as an implementation to be added to Bitcoin, so a new cryptocurrency had to be formed. Zcoin was the first cryptocurrency to implement the Zerocoin protocol in 2016. [18]
ZEROCOIN

PROS

– Provides sender and receiver privacy
– Supply can be audited
– Relatively mature technology
– Does not require a third-party

CONS

– Requires trusted setup (May not be required with Sigma protocol)
– Large proof sizes (not lightweight)
– Does not provide full privacy for transaction amounts

ZEROCASH

Used in: Zcash, Horizen, Komodo, Zclassic, Bitcoin Private
In May 2014, the current successor to the Zerocoin protocol, Zerocash, was created, also by Matthew Green and others (Eli Ben-Sasson, Alessandro Chiesa, Christina Garman, Matthew Green, Ian Miers, Eran Tromer, Madars Virza).[19] It improved upon the Zerocoin concept by taking advantage of zero-knowledge proofs called zk-snarks (zero knowledge succinct non-interactive arguments of knowledge). Unlike Zerocoin, which hid coin origins and payment history, Zerocash was faster, with smaller transaction sizes, and hides transaction information on the sender, receiver and amount. Zcash is the first cryptocurrency to implement the Zerocash protocol in 2016. [20]
ZEROCASH

PROS

– Provides full anonymity. Sender, receiver and amount hidden.
– Privacy can be default?
– Fast due to small proof sizes.
– Payment amount can be optionally disclosed for auditing
– Does not require any third-party

CONS

– Requires trusted setup. (May be improved with zt-starks technology)
– Supply cannot be audited. And coins can potentially be forged without proper implementation.
– Private transactions computationally intensive (improved with Sapling upgrade)

CONFIDENTIAL TRANSACTIONS

Used in: Monero and Particl with Ring Signatures as RING-CT
The next proposal from Maxwell was that of confidential transactions, proposed in June 2015 as part of the Sidechain Elements project from Blockstream, where Maxwell was Chief Technical Officer.[21],[22] It proposed to hide the transaction amount and asset type (e.g. deposits, currencies, shares), so that only the sender and receiver are aware of the amount, unless they choose to make the amount public. It uses homomorphic encryption[23] to encrypt the inputs and outputs by using blinding factors and a kind of ring signature in a commitment scheme, so the amount can be ‘committed’ to, without the amount actually being known. I’m terribly sorry if you now have the urge to go and research exactly what that means. The takeaway is that the transaction amount can be hidden from outsiders while being verifiable.
CONFIDENTIAL TRANSACTIONS

PROS

– Hides transaction amounts
– Privacy can be default
– Mature technology
– Does not require any third-party

CONS

– Only provides transaction amount privacy when used alone

RING-CT

Used in: Monero, Particl
Then came Ring Confidential transactions, proposed by Shen-Noether of Monero Research Labs in October 2015.[24] RingCT combines the use of ring signatures for hiding sender information, with the use of confidential transactions (which also uses ring signatures) for hiding amounts. The proposal described a new type of ring signature, A Multi-layered Linkable Spontaneous Anonymous Group signature which “allows for hidden amounts, origins and destinations of transactions with reasonable efficiency and verifiable, trustless coin generation”.[25] RingCT was implemented in Monero in January 2017 and made mandatory after September 2017.
RING -CONFIDENTIAL TRANSACTIONS

PROS

– Provides full anonymity. Hides transaction amounts and receiver privacy
– Privacy can be default
– Mature technology
– Greater scalability with bulletproofs
– Does not require any third-party

CONS

– Privacy not very effective without high volume

MIMBLEWIMBLE

Used in: Grin
Mimblewimble was proposed in July 2016 by pseudonymous contributor Tom Elvis Jedusorand further developed in October 2016 by Andrew Poelstra.[26],[27] Mimblewimble is a “privacy and fungibility focused cryptocoin transaction structure proposal”.[28] The key words are transaction structure proposal, so the way the blockchain is built is different, in order to accommodate privacy and fungibility features. Mimblewimble uses the concept of Confidential transactions to keep amounts hidden, looks at private keys and transaction information to prove ownership of funds rather than using addresses, and bundles transactions together instead of listing them separately on the blockchain. It also introduces a novel method of pruning the blockchain. Grin is a cryptocurrency in development that is applying Mimblewimble. Mimblewimble is early in development and you can understand it more here [29].
MIMBLEWIMBLE

PROS

– Hides transaction amounts and receiver privacy
– Privacy is on by default
– Lightweight
– No public addresses?

CONS

– Privacy not very effective without high volume
– Sender and receiver must both be online
– Relatively new technology

ZEXE

Fresh off the minds of brilliant cryptographers (Sean Bowe, Alessandro Chiesa, Matthew Green, Ian Miers, Pratyush Mishra, Howard Wu), in October 2018 Zexe proposed a new cryptographic primitive called ‘decentralized private computation.[30] It allows users of a decentralized ledger to “execute offline computations that result in transactions”[31], but also keeps transaction amounts hidden and allows transaction validation to happen at any time regardless of computations being done online. This can have far reaching implications for privacy coins in the future. Consider cases where transactions need to be automatic and private, without both parties being present.

NETWORK PRIVACY

Privacy technologies that look at network privacy as nodes communicate with each other on the network are important considerations, rather than just looking at privacy on the blockchain itself. Anonymous layers encrypt and/or reroute data as it moves among peers, so it is not obvious who they originate from on the network. They are used to protect against surveillance or censorship from ISPs and governments. The Invisible Internet Project (I2P) is an anonymous network layer that uses end to end encryption for peers on a network to communicate with each other.[32] Its history dates back to 2003. Kovri is a Monero created implementation of I2P.[33] The Onion Router (Tor) is another anonymity layer [34]) that Verge is a privacy cryptocurrency that uses. But its historical link to the US government may be is concerning to some[35]. Dandelion transaction relay is also an upcoming Bitcoin improvement proposal (BIP) that scrambles IP data that will provide network privacy for Bitcoin as transaction and other information is transmitted.[36],[37],[38]

UPCOMING

Monero completed bulletproofs protocol updates that reduce RINGCT transaction sizes and thus transaction fee costs. (Bulletproofs are a replacement for range proofs used in confidential transactions that aid in encrypting inputs and outputs by making sure they add to zero).
Sigma Protocol – being actively researched by Zcoin team as of 2018 to replace Zerocoin protocol so that a trusted setup is not required.[39] There is a possible replacement for zk-snarks, called zk-starks, another form of zero-knowledge proof technology, that may make a trusted set-up unnecessary for zero-knowledege proof coins.[40]

PART 1 CONCLUSION OF THE PRIVACY COIN GUIDE ON THE TECHNOLOGY BEHIND PRIVACY COINS

Although Bitcoin is still a groundbreaking technology that gives us a trust-less transaction system, it has failed to live up to its expectations of privacy. Over time, new privacy technologies have arrived and are arriving with innovative and exciting solutions for Bitcoin’s lack of fungibility. It is important to note that these technologies are built on prior research and application, but we are considering their use in cryptocurrencies. Protocols are proposed based on cryptographic concepts that show how they would work, and then developers actually implement them. Please note that I did not include the possibility of improper implementation as a disadvantage, and the advantages assume that the technical development is well done. A very important point is that coins can also adapt new privacy technologies as their merits become obvious, even as they start with a specific privacy protocol. Furthermore, I am, unfortunately, positive that this is not an exhaustive overview and I am only covering publicized solutions. Next, we’ll talk more about the pros and cons and give an idea of how the coins can be compared.

There's a video version that can be watched, and you can find out how to get the second two parts if you want on my website (video link on the page): https://cryptoramble.com/guide-on-privacy-coins/
submitted by CryptoRamble to ethtrader [link] [comments]

WARNING: If you try to use the Lightning Network you are at extremely HIGH RISK of losing funds and is not recommended or safe to do at this time or for the foreseeable future

I was hoping I wouldn't have to make this kind of post about the Lightning Network (LN) but unfortunately due to recent events and a long track record of being "reckless" (being a broken and unsafe network) I feel obligated to make this post to warn unsuspecting users that are being tricked into thinking Lightning Network is safe and usable.
At this stage it has become abundantly clear that LN is not safe to use at this time, and anyone that uses it is at a very high risk of losing funds.
There seems to be this false sense of security that things are just fine and that it's okay to use LN, when it couldn't be further from the truth. We get a lot of trolls coming here spouting that LN is the next best thing since sliced bread, better than Bitcoin itself, and is the future. And maybe one day it could be, but at this time, it's clearly not and people that are here trying to trick you into this false sense of belief are intentionally deceiving you.
Below is a long list of links I just spent a few mins compiling which shows, that LN is over-promised, a long ways away from being in working order, and is unsafe to use.
It should probably go without saying, but to be fully transparent: none of these issues occur on Bitcoin Cash (BCH) because BCH doesn't depend on Lightning to scale, but scales on-chain. So if you want to avoid all of these problems and security issues with Lightning, just use Bitcoin Cash instead. Problem solved.
submitted by BitcoinXio to btc [link] [comments]

Bitcoin 11 Years - Achievements, Lies, and Bullshit Claims So Far - Tooootally NOT a SCAM !!!!

That's right folks, it's that time again for the annual review of how Bitcoin is going: all of those claims, predictions, promises .... how many have turned out to be true, and how many are completely bogus ???
Please post / link this on Bitcoin (I am banned there for speaking the truth, so I cannot do it) ... because it'a way past time those poor clueless mushrooms were exposed to the truth.
Anyway, without further ado, I give you the Bitcoin's Achievements, Lies, and Bullshit Claims So Far ...
.
Bitcoin Achievements so far:
  1. It has spawned a cesspool of scams (2000+ shit coin scams, plus 100's of other scams, frauds, cons).
  2. Many 1,000's of hacks, thefts, losses.
  3. Illegal Use Cases: illegal drugs, illegal weapons, tax fraud, money laundering, sex trafficking, child pornography, hit men / murder-for-hire, ransomware, blackmail, extortion, and various other kinds of fraud and illicit activity.
  4. Legal Use Cases: Steam Games, Reddit, Expedia, Stripe, Starbucks, 1000's of merchants, cryptocurrency conferences, Ummm ????? The few merchants who "accept Bitcoin" immediately convert it into FIAT after the sale, or require you to sell your coins to BitPay or Coinbase for real money, and will then take that money. Some of the few who actually accept bitcoin haven't seen a customer who needed to pay with bitcoin for the last six months, and their cashiers no longer know how to handle that.
  5. Contributing significantly to Global Warming.
  6. Wastes vasts amounts of electricity on useless, do nothing work.
  7. Exponentially raises electricity prices when big miners move into regions where electricity was cheap.
  8. It’s the first "currency" that is not self-sustainable. It operates at a net loss, and requires continuous outside capital to replace the capital removed by miners to pay their costs. It’s literally a "black hole currency."
  9. It created a new way for people living too far from Vegas to gamble all their life savings away.
  10. Spawned "blockchain technology", a powerful technique that lets incompetent programmers who know almost nothing about databases, finance, programming, or blockchain scam millions out of gullible VC investors, banks, and governments.
  11. Increased China's foreign trade balance by a couple billion dollars per year.
  12. Helped the FBI and other law enforcement agents easily track down hundreds of drug traffickers and drug users.
  13. Wasted thousands if not millions of man-hours of government employees and legislators, in mostly fruitless attempts to understand, legitimize, and regulate the "phenomenon", and to investigate and prosecute its scams.
  14. Rekindled the hopes of anarcho-capitalists and libertarians for a global economic collapse, that would finally bring forth their Mad Max "utopia".
  15. Added another character to Unicode (no, no, not the "poo" 💩 character ... that was my first guess as well 🤣)
  16. Provides an easy way for malware and ransomware criminals to ply their trade and extort hospitals, schools, local councils, businesses, utilities, as well as the general population.
.
Correct Predictions:
  1. 2015-12: "1,000 dollar in 2015", u/Luka_Magnotta, aka time traveler from the future, 31-Aug-2013, https://www.reddit.com/Bitcoin/comments/1lfobc/i_am_a_timetraveler_from_the_future_here_to_beg/ (Technically, this prediction is WRONG because the highest price reached in 2015 was $495.56 according to CMC. Yes, Bitcoin reached $1,000 in 2013 and 2014, but that's NOT what the prediction says).
  2. 2017-12: "10,000 in 2017", u/Luka_Magnotta, aka time traveler from the future, 31-Aug-2013, https://www.reddit.com/Bitcoin/comments/1lfobc/i_am_a_timetraveler_from_the_future_here_to_beg/
  3. 2018-04: $10,000 (by April 2018), Mike Novogratz, link #1: https://www.bitcoinprice.com/predictions/, link #2: https://www.bloomberg.com/news/articles/2017-11-21/mike-novogratz-says-bitcoin-will-end-the-year-at-10-000
  4. 2018-12: $10,000 (by 2018), Tim Draper, link #1: https://www.bitcoinprice.com/predictions/, link #2: https://www.youtube.com/watch?v=3AW5s6QkRRY
  5. Any others ? (Please tell me).
.
Bitcoin Promises / Claims / Price Predictions that turned out to be lies and bullshit:
  1. ANONYMOUS
  2. CENSORSHIP RESISTANT
  3. FRICTIONLESS
  4. TRUSTLESS
  5. UNCENSORABLE
  6. UNTRACEABLE
  7. SAFE
  8. SECURE
  9. YOU CANNOT LOSE
  10. NOT A SCAM
  11. PERMISSIONLESS
  12. GUARANTEED PRIVACY
  13. CANNOT BE SEIZED
  14. CANNOT BE CONFISCATED
  15. Be your own bank
  16. Regulation-proof
  17. NO MIDDLEMEN
  18. DECENTRALIZED
  19. Instantaneous transactions
  20. Fast transactions
  21. Zero / No transaction fees
  22. Low transaction fees
  23. A store of value
  24. A deflationary digital asset
  25. "A deflationary digital asset that no single human being can destroy."
  26. "an asset that is equally as dual use as a car, water, or any other traditional element that has existed."
  27. "Digital gold"
  28. Easy to use
  29. Cannot be stolen
  30. Cannot be hacked
  31. Can be mined by anyone
  32. Can be mined by anyone, even with an old computer or laptop
  33. Cannot be centralized
  34. Will return power back to the people.
  35. Not a Ponzi scam
  36. Not a Pyramid scam
  37. Never pay tax again
  38. Your gains cannot be taxed
  39. A currency
  40. An amazing new class of asset
  41. An asset
  42. A means to economic freedom
  43. A store of value
  44. The best investment the word has ever seen
  45. A great investment
  46. Efficient
  47. Scalable
  48. Stable
  49. Resilient
  50. Reliable
  51. Low energy
  52. Low risk
  53. Redistribute wealth to everybody
  54. No more have's and have not's
  55. No more US and THEM
  56. No more disadvantaged people
  57. No more RICH and POOR
  58. No more poor people
  59. Uses amazing new technology
  60. Uses ingenious new technology
  61. Satishi Nakamoto invented ...
  62. Segwit will solve all of Bitcoin's woes
  63. Lightning Network will solve all of Bitcoin's woes
  64. Limited by scarcity
  65. Can only go up in value
  66. Price cannot crash
  67. Has intrinsic value
  68. Value will always be worth more than cost to mine
  69. Adoption by investors is increasing exponentially
  70. Adoption by investors is increasing
  71. Adoption by merchants is increasing exponentially
  72. Adoption by merchants is increasing
  73. You are secure if you keep your coins on an exchange
  74. You are secure if you keep your coins in a hardware wallet
  75. You are secure if you keep your coins in an air-gapped Linux PC
  76. Will change the world
  77. "the next phase in human evolution"
  78. "Blockchain is more encompassing than the internet"
  79. Blockchain can solve previously unsolvable problems.
  80. "The only regulation we need is the blockchain"
  81. "Bank the unbanked"
  82. "To abolish financial slavery and the state's toxic monopoly on money."
  83. "To have better tools in the fight against the state violence and taxation."
  84. "To stamp information on a blockchain forever so we can bypass state censorship, copyrights, patents(informational monopolies) etc."
  85. Will destroy / overthrow FIAT
  86. Will destroy / overthrow the world's governments
  87. Will destroy / overthrow the banking system
  88. Will destroy / overthrow the world economies
  89. Will free people from tyranny
  90. Will give people financial freedom
  91. Will bring world peace
  92. Never going below $19K again
  93. Never going below $18K again
  94. Never going below $17K again
  95. Never going below $16K again
  96. Never going below $15K again
  97. Never going below $14K again
  98. Never going below $13K again
  99. Never going below $12K again
  100. Never going below $11K again
  101. Never going below $10K again
  102. Never going below $9K again
  103. Never going below $8K again
  104. Never going below $7K again
  105. Never going below $6K again
  106. Never going below $5K again
  107. Never going below $4K again
  108. Is NOT a Scam
  109. Hashing Power secures the Bitcoin network
  110. Untraceable, private transactions
  111. Guaranteed privacy
  112. Not created out of thin air
  113. Not created out of thin air by unregulated, unbacked entities
  114. Totally NOT a scam
  115. Is not used primarily by crimonals, drug dealers, or money launderers.
  116. 100% secure
  117. 2010 will be the "Year of Crypto"
  118. 2011 will be the "Year of Crypto"
  119. 2012 will be the "Year of Crypto"
  120. 2013 will be the "Year of Crypto"
  121. 2014 will be the "Year of Crypto"
  122. 2015 will be the "Year of Crypto"
  123. 2016 will be the "Year of Crypto"
  124. 2017 will be the "Year of Crypto"
  125. 2018 will be the "Year of Crypto"
  126. 2019 will be the "Year of Crypto"
  127. 2010: MASS ADOPTION any day now"
  128. 2011: MASS ADOPTION aany day now"
  129. 2012: MASS ADOPTION aaany day now"
  130. 2013: MASS ADOPTION aaaany day now"
  131. 2014: MASS ADOPTION aaaaany day now"
  132. 2015: MASS ADOPTION aaaaaany day now"
  133. 2016: MASS ADOPTION aaaaaaany day now"
  134. 2017: MASS ADOPTION aaaaaaaany day now"
  135. 2018: MASS ADOPTION aaaaaaaaany day now"
  136. 2019: MASS ADOPTION aaaaaaaaany day now"
  137. "Financial Freedom, bro."
  138. no single entity, government or individual, can alter or reverse its transactions
  139. insurance against the tyranny of state
  140. Bitcoin has come to destroy all governments and bring about the libertarian utopia of my dreams.
  141. The major issues in Bicoin's network will be fixed. This is still early days, Bitcoin has only been around for 2+ years.
  142. The major issues in Bicoin's network will be fixed. This is still early days, Bitcoin has only been around for 5+ years.
  143. The major issues in Bicoin's network will be fixed. This is still early days, Bitcoin has only been around for 7+ years.
  144. The major issues in Bicoin's network will be fixed. This is still early days, Bitcoin has only been around for 9+ years.
  145. 1,000's of predictions of skyrocketing and/or never falling prices
  146. Escape the petty rivalries of warring powers and nation states by scattering control among the many. The Bitcoin Cash debacle proves that even the most cryptographically secure plans of mice and men often go awry. Ref: https://www.reddit.com/Buttcoin/comments/9zfhb6/like_theres_only_one_flaw_with_buttcoin_crash/ea8s11m
  147. People will NEVER be able to welch out of bets or deals again. Nov-2018, Ref: https://www.reddit.com/Buttcoin/comments/9zvpl2/the_guy_who_made_the_1000_bet_that_btc_wouldnt/
  148. "Everything will be better, faster, and cheaper.", Brock Pierce, EOS.io shill video.
  149. "Everything will be more connected.", Brock Pierce, EOS.io shill video.
  150. "Everything will be more trustworthy.", Brock Pierce, EOS.io shill video.
  151. "Everything will be more secure.", Brock Pierce, EOS.io shill video.
  152. "Everything that exists is no-longer going to exist in the way that it does today.", Brock Pierce, EOS.io shill video.
  153. "Everything in this world is about to get better.", Brock Pierce, EOS.io shill video.
  154. You are a slave to the bankers
  155. The bankers print money and then you pay for it
  156. Bitcoin is The Peoples Money
  157. Bitcoin will set you free
  158. Bitcoin will set you free from the slavery of the banks and the government Ref: https://www.reddit.com/Bitcoin/comments/cd2q94/bitcoin_shall_set_you_free/
  159. ~~Bitcoin is "striking fear into the hearts of bankers, precisely because Bitcoin eliminates the need for banks. ~~, Mark Yusko, billionaire investor and Founder of Morgan Creek Capital, https://www.bitcoinprice.com/predictions/
  160. "When transactions are verified on a Blockchain, banks become obsolete.", Mark Yusko, billionaire investor and Founder of Morgan Creek Capital, https://www.bitcoinprice.com/predictions/
  161. SnapshillBot quotes from delusional morons:
  162. "A bitcoin miner in every device and in every hand."
  163. "All the indicators are pointing to a huge year and bigger than anything we have seen before."
  164. "Bitcoin is communism and democracy working hand in hand."
  165. "Bitcoin is freedom, and we will soon be free."
  166. "Bitcoin isn't calculated risk, you're right. It's downright and painfully obvious that it will consume global finance."
  167. "Bitcoin most disruptive technology of last 500 years"
  168. "Bitcoin: So easy, your grandma can use it!"
  169. "Creating a 4th Branch of Government - Bitcoin"
  170. "Future generations will cry laughing reading all the negativity and insanity vomited by these permabears."
  171. "Future us will thank us."
  172. "Give Bitcoin two years"
  173. "HODLING is more like being a dutiful guardian of the most powerful economic force this planet has ever seen and getting to have a say about how that force is unleashed."
  174. "Cut out the middleman"
  175. "full control of your own assets"
  176. "reduction in wealth gap"
  177. "no inflation"
  178. "cannot print money out of thin air"
  179. "Why that matters? Because blockchain not only cheaper for them, it'll be cheaper for you and everyone as well."
  180. "If you are in this to get rich in Fiat then no. But if you are in this to protect your wealth once the current monetary system collapse then you are protected and you'll be the new rich."
  181. "Theres the 1% and then theres the 99%. You want to be with the rest thats fine. Being different and brave is far more rewarding. No matter your background or education."
  182. "NO COINERS will believe anything they are fed by fake news and paid media."
  183. "I know that feeling (like people looking at you as in seeing a celebrity and then asking things they don't believe until their impressed)."
  184. "I literally walk round everyday looking at other people wondering why they even bother to live if they don't have Bitcoin in their lives."
  185. "I think bitcoin may very well be the best form of money we’ve ever seen in the history of civilization."
  186. "I think Bitcoin will do for mankind what the sun did for life on earth."
  187. "I think the constant scams and illegal activities only show the viability of bitcoin."
  188. "I think we're sitting on the verge of exponential interest in the currency."
  189. "I'm not using hyperbole when I say Satoshi found the elusive key to World Peace."
  190. "If Jesus ever comes back you know he's gonna be using Bitcoin"
  191. "If this idea was implemented with The Blockchain™, it would be completely flawless! Flawless I tell you!"
  192. "If you're the minimum wage guy type, now is a great time to skip food and go full ramadan in order to buy bitcoin instead."
  193. "In a world slipping more and more into chaos and uncertainty, Bitcoin seems to me like the last solid rock defeating all the attacks."
  194. "In this moment, I am euphoric. Not because of any filthy statist's blessing, but because I am enlightened by own intelligence."
  195. "Is Bitcoin at this point, with all the potential that opens up, the most undervalued asset ever?"
  196. "It won't be long until bitcoin is an everyday household term."
  197. "It's the USD that is volatile. Bitcoin is the real neutral currency."
  198. "Just like the early Internet!"
  199. "Just like the Trojan Horse of old, Bitcoin will reveal its full power and nature"
  200. "Ladies if your man doesnt have some bitcoin then he cant handle anything and has no danger sex appeal. He isnt edgy"
  201. "let me be the first to say if you dont have bitcoin you are a pussy and cant really purchase anything worldwide. You have no global reach"
  202. "My conclusion is that I see this a a very good thing for bitcoin and for users"
  203. "No one would do such a thing; it'd be against their self interests."
  204. "Ooh lala, good job on bashing Bitcoin. How to disrespect a great innovation."
  205. "Realistically I think Bitcoin will replace the dollar in the next 10-15 years."
  206. "Seperation of money and state -> states become obsolete -> world peace."
  207. "Some striking similarities between Bitcoin and God"
  208. "THANK YOU. Better for this child to be strangled in its crib as a true weapon for crypto-anarchists than for it to be wielded by toxic individuals who distort the technology and surrender it to government and corporate powers."
  209. "The Blockchain is more encompassing than the internet and is the next phase in human evolution. To avoid its significance is complete ignorance."
  210. "The bull run should begin any day now."
  211. "The free market doesn't permit fraud and theft."
  212. "The free market will clear away the bad actors."
  213. "The only regulation we need is the blockchain."
  214. "We are not your slaves! We are free bodies who will swallow you and puke you out in disgust. Welcome to liberty land or as that genius called it: Bitcoin."
  215. "We do not need the bankers for Satoshi is our saviour!"
  216. "We have never seen something so perfect"
  217. "We must bring freedom and crypto to the masses, to the common man who does not know how to fight for himself."
  218. "We verified that against the blockchain."
  219. "we will see a Rennaisnce over the next few decades, all thanks to Bitcoin."
  220. "Well, since 2006, there has been a infinite% increase in price, so..."
  221. "What doesn't kill cryptocurrency makes it stronger."
  222. "When Bitcoin awake in normally people (real people) ... you will have this result : No War. No Tax. No QE. No Bank."
  223. "When I see news that the price of bitcoin has tanked (and thus the market, more or less) I actually, for-real, have the gut reaction "oh that’s cool, I’ll be buying cheap this week". I never knew I could be so rational."
  224. "Where is your sense of adventure? Bitcoin is the future. Set aside your fears and leave easier at the doorstep."
  225. "Yes Bitcoin will cause the greatest redistribution of wealth this planet has ever seen. FACT from the future."
  226. "You are the true Bitcoin pioneers and with your help we have imprinted Bitcoin in the Canadian conscience."
  227. "You ever try LSD? Perhaps it would help you break free from the box of state-formed thinking you have limited yourself..."
  228. "Your phone or refrigerator might be on the blockchain one day."
  229. The banks can print money whenever they way, out of thin air, so why can't crypto do the same ???
  230. Central Banks can print money whenever they way, out of thin air, without any consequences or accounting, so why can't crypto do the same ???
  231. It's impossible to hide illegal, unsavory material on the blockchain
  232. It's impossible to hide child pornography on the blockchain
  233. Fungible
  234. All Bitccoins are the same, 100% identical, one Bitcoin cannot be distinguished from any other Bitcoin.
  235. The price of Bitcoin can only go up.
  236. "Bubbles are mathematically impossible in this new paradigm. So are corrections and all else", John McAfee, 7 Dec 2017 @ 5:09 PM,https://mobile.twitter.com/officialmcafee/status/938938539282190337
  237. Scarcity
  238. The price of Bitcoin can only go up because of scarcity / 21 million coin limit. (Bitcoin is open source, anyone can create thir own copy, and there are more than 2,000+ Bitcoin copies / clones out there already).
  239. immune to government regulation
  240. "a world-changing technology"
  241. "a long-term store of value, like gold or silver"
  242. "To Complex to Be Audited."
  243. "Old Auditing rules do not apply to Blockchain."
  244. "Old Auditing rules do not apply to Cryptocurrency."
  245. "Why Bitcoin has Value: SCARCITY.", PlanB, Coin Shill, 22-Mar-2019, https://medium.com/@100trillionUSD/modeling-bitcoins-value-with-scarcity-91fa0fc03e25
  246. "Bitcoin is the first scarce digital object the world has ever seen, it is scarce like silver & gold, and can be sent over the internet, radio, satellite etc.", PlanB, Coin Shill, 22-Mar-2019, https://medium.com/@100trillionUSD/modeling-bitcoins-value-with-scarcity-91fa0fc03e25
  247. "Surely this digital scarcity has value.", PlanB, Coin Shill, 22-Mar-2019, https://medium.com/@100trillionUSD/modeling-bitcoins-value-with-scarcity-91fa0fc03e25
  248. Bitcoin now at $16,600.00. Those of you in the old school who believe this is a bubble simply have not understood the new mathematics of the Blockchain, or you did not cared enough to try. Bubbles are mathematically impossible in this new paradigm. So are corrections and all else", John McAfee, 7 Dec 2017 @ 5:09 PM,https://mobile.twitter.com/officialmcafee/status/938938539282190337
  249. "May 2018 will be the last time we ever see $bitcoin under $10,000", Charlie Shrem, bitcoin advocate and convicted felon, 11:31 AM 3-May-2018, https://twitter.com/CharlieShrem/status/992109375555858433
  250. "Last dip ever.", AngeloBTC, 14 Oct 2018, https://mobile.twitter.com/AngeloBTC/status/1051710824388030464/photo/1
  251. "Bitcoin May Have Just Experienced its Final Shakeout Before a Big Rally", Joseph Young, coin shill, October 15, 2018 22:30 CET, https://www.ccn.com/bitcoin-may-have-just-experienced-its-final-shakeout-before-a-big-rally/
  252. Bitcoin would be a buy if the price fell under $5,000., Mohamed El-Erian, chief economic advisor at Allianz, 29-Jun-2018, https://www.ccn.com/bitcoin-a-buy-below-5000-says-allianz-chief-economic-adviso
  253. 2013-11-27: ""What is a Citadel?" you might wonder. Well, by the time Bitcoin became worth 1,000 dollar [27-Nov-2013], services began to emerge for the "Bitcoin rich" to protect themselves as well as their wealth. It started with expensive safes, then began to include bodyguards, and today, "earlies" (our term for early adapters), as well as those rich whose wealth survived the "transition" live in isolated gated cities called Citadels, where most work is automated. Most such Citadels are born out of the fortification used to protect places where Bitcoin mining machines are located. The company known as ASICminer to you is known to me as a city where Mr. Friedman rules as a king.", u/Luka_Magnotta, aka time traveler from the future, 31-Aug-2013, https://www.reddit.com/Bitcoin/comments/1lfobc/i_am_a_timetraveler_from_the_future_here_to_beg/
  254. 2018-02: Bitcoin price to hit $27,000 by February 2018, Trace Mayer, host of the Bitcoin Knowledge Podcast, and self-proclaimed entrepreneur, investor, journalist, monetary scientist and ardent defender, Link #1: https://mobile.twitter.com/TraceMayestatus/917260836070154240/photo/1, Link #2: https://www.bitcoinprice.com/predictions/
  255. 2018-06: "Bitcoin will surpass $15,000 in June [2018]." John McAfee, May 25, 2018, https://bitcoinist.com/john-mcafee-says-bitcoin-will-surpass-15000-in-june/
  256. 2018-07: Bitcoin will be $28,000 by mid-2018, Ronnie Moas, Wall Street analyst and founder of Standpoint Research, http://helpfordream.com/2018/12/23/5-bitcoin-price-predictions-gone-wrong/.
  257. 2018-12: Bitcoin to reach a price of between 40,000 and 110,000 US dollars by the end of the 2017 bull run ... sometime before 2019, Masterluc, 26-May-2017, an anonymous "legendary" Bitcoin trader, Link #1: https://www.tradingview.com/chart/BTCUSD/YRZvdurN-The-target-of-current-bubble-lays-between-40k-and-110k/, Link #2: https://www.bitcoinprice.com/predictions/
  258. 2018-12: "There is no reason why we couldn’t see Bitcoin pushing $50,000 by December [2018]", Thomas Glucksmann, head of APAC business at Gatecoin, Link #1: https://www.bitcoinprice.com/predictions/
  259. 2018-12: Listen up you giggling cunts... who wants some?...you? you want some?...huh? Do ya? Here's the deal you fuckin Nerds - Butts are gonna be at 30 grand or more by next Christmas [2018] - If they aren't I will publicly administer an electronic dick sucking to every shill on this site and disappear forever - Until then, no more bans or shadow bans - Do we have a deal? If Butts are over 50 grand me and Lammy get to be mods. Deal? Your ole pal - "Skully" u/10GDeathBoner, 3-Feb-2018 https://www.reddit.com/Buttcoin/comments/7ut1ut/listen_up_you_giggling_cunts_who_wants_someyou/
  260. 2018-12: 1 bitcoin = 1 Lambo. Remind me on Christmas eve [2018] u/10GDeathBoner, 3-Feb-2018, https://www.reddit.com/Buttcoin/comments/7ut1ut/listen_up_you_giggling_cunts_who_wants_someyou/dtn2pna
  261. 2018-12: Been in BTC since 2014 and experienced many "deaths" of BTC... this too shall pass... $10k end of the year. [2018] u/Exxe2502, 30-Jun-2018 https://reddit.com/Bitcoin/comments/8uur27/_/e1ioi5b/?context=1
  262. 2018-12: "Yale Alumni prediction - 30 Grand by Christmas [2018] - and you my friend... you will be the one eating Mcafee's dick in 2020. :) -:", u/SirNakamoto, 15-Jun-2018, https://www.reddit.com/Buttcoin/comments/8r0tyh/fdic_agrees_to_cover_bitcoin_losses_in_event_of/e0nzxq7
  263. 2018-12: "Impossible For Bitcoin Not to Hit $10,000 by This Year (2018)", Mike Novogratz, a former Goldman Sachs Group Inc. partner, ex-hedge fund manager of the Fortress Investment Group and a longstanding advocate of cryptocurrency, 22-Sep-2018, https://www.newsbtc.com/2018/09/22/billionaire-novogratz-impossible-for-bitcoin-not-to-hit-10000-by-this-yea
  264. 2018-12: "[Bitcoin] between $13,800 and $14,800 [by end of 2018]", Fundstrat's Tom Lee, 13-Dec-2018, https://www.cnbc.com/2018/12/13/wall-streets-bitcoin-bull-tom-lee-we-are-tired-of-people-asking-us-about-target-prices.html
  265. 2018-12: "Bitcoin is going to be $15k-$20k by the end of the year (2018)", Didi Taihuttu, 1-Nov-2018, https://www.wsj.com/video/series/moving-upstream/the-bitcoin-gamble/85E3A4A7-C777-4827-9A3F-B387F2AB7654
  266. 2018-12: 2018 bitcoin price prediction reduced to $15,000 [was $25,000], Fundstrat's Tom Lee, 16-Nov-2018, https://www.cnbc.com/2018/11/16/wall-streets-crypto-bull-tom-lee-slashes-year-end-forecast-by-10000.html
  267. 2018-12: "I want to be clear, bitcoin is going to $25,000 by year end (2018)", Fundstrat's Tom Lee, 5-Jul-2018, https://www.cnbc.com/video/2018/07/05/tom-lee-i-want-to-be-clear-bitcoin-is-going-to-25000-by-year-end.html
  268. 2018-12: "Bitcoin could be at $40,000 by the end of 2018, it really easily could", Mike Novogratz, a former Goldman Sachs Group Inc. partner, ex-hedge fund manager of the Fortress Investment Group and a longstanding advocate of cryptocurrency, 21-Sep-2018, https://www.youtube.com/watch?v=6lC1anDg2KU
  269. 2018-12: "Bitcoin will be priced around $50,000 by the end of the year (2018)", Bitcoin bull Arthur Hayes, co-founder and CEO of BitMEX, 29-Jun-2018, https://www.cnbc.com/2018/06/29/bitcoin-will-reach-50000-in-2018-says-founder-of-bitcoin-exchange.html
  270. 2018-12: "Bitcoin could definitely see $50,000 in 2018", Jeet Singh, cryptocurrency portfolio manager, speaking in January 2018 at the World Economic Forum in Davos, https://www.dcforecasts.com/new-prediction-says-bitcoin-hit-50000-2018/
  271. 2018-12: "Bitcoin will hit $100,000 this year (2018)", Kay Van-Petersen, an analyst at Saxo Bank, 17-Jan-2018, https://www.cnbc.com/2018/01/16/bitcoin-headed-to-100000-in-2018-analyst-who-forecast-2017-price-move.html
  272. 2018-12: "Bitcoin price to surpass the $100,000 mark by the end of 2018", Tone Vays, 21-Sep-2017, https://www.ccn.com/prominent-bitcoin-trader-price-is-heading-towards-100000-in-2018/
  273. 2018-12: "Bitcoin’s Price Will Surpass the $100,000 Mark by the End of 2018", Anonymous ("author" obviously too embarrassed to put his name to such bullshit "articles"), Oct-2018, https://investingpr.com/bitcoin-price-predictions-for-2018/
  274. 2018-12: "Our [2018] year-end bitcoin target is $7700.", James Stefurak, Founder at Monarch Research. See article: "Experts Forecast Bitcoin will rise by 2019", REF: https://hackernoon.com/experts-forecast-bitcoin-will-rise-by-2019-f4af8807036b?gi=dfea3c30d6d8
  275. 2018-12: "... we’ll see the price rally reaching its all-time of high of around $20K before the end of 2018", Khaled Khorshid, Co-Founder at Treon ICO. See article: "Experts Forecast Bitcoin will rise by 2019", REF: https://hackernoon.com/experts-forecast-bitcoin-will-rise-by-2019-f4af8807036b?gi=dfea3c30d6d8
  276. 2018-12: Bitcoin will end 2018 at the price point of $50,000, Ran Neuner, host of CNBC’s show Cryptotrader and the 28th most influential Blockchain insider according to Richtopia,https://www.bitcoinprice.com/predictions/
  277. Plus a whole host of wrong 2019 predictions (could not be included here because of post character limit issues), so please see my earlier post from 4 days ago: Ummm, remember those "Expert" Bitcoin Price Predictions for 2019 ..... ohhhhh dear ....., https://www.reddit.com/Buttcoin/comments/eiqhq3/ummm_remember_those_expert_bitcoin_price/
.
But it's NOT all bad news, some claims and promises are yet to be determined:
  1. Never going below $3K again
  2. Never going below $2K again
  3. Never going below $1K again
  4. Any others ? Please let me know.
submitted by Crypto_To_The_Core to Buttcoin [link] [comments]

Lessons learned - Crypto and Divorce - In January I was a millionaire thanks to BTC, then my wife divorces me and now I have $30,000 AMA

Crossreferencing u/nanoissuperior He wrote earlier today: https://www.reddit.com/CryptoCurrency/comments/a3n6uw/in_january_i_was_a_millionaire_thanks_to_nano_now/
Title: In January I was a millionaire thanks to Nano, now I have $25,000 AMA

I was replying to his post, but my reply ended up being a bit too large as a reply and steered off-topic, albeit an interesting one. So I decided to make it its own post, because there may be a good lessons to be learned and hoping some will come forward with good information to be shared.
I hope it can help anyone on this sub avoid the costly mistakes that I made. Here it goes: FLAIR: LEGAL (not in the list)
----
u/nanoissuperior are you who I think you are? I won't give out any further identifying clues, but I happen to know someone in the exact same position that could have written that exact same headline. If you read the first paragraph, you'll know if you know me.
The person I know bought Nano really early, based on a tip from a friend. I got in much later. By the time he told me it had already spiked to the $5 range, when I ended up buying. I then sold in the $20's so it was a good buy nonetheless. We were former colleagues at a large, large software company somewhere in the PNW, I left the company to venture out on my own and try to launch some projects I had in mind and relocated overseas for a few years. We lost contact with each other during my time away, but we connected again during the market runup and started exchanging coin information on a daily basis during the big bull run of late 2017. That was a crazy time.... the market trend was a few degrees short of vertical for pretty much all coins!

Hey, guess what? Now that I think about it, I could have written that same headline myself! In January 2018 I was a Millionaire too! Not with Nano, but thanks to purchasing a good chunk of Bitcoin in 2011 at $1.20 each. I ended up a single digit millionaire with what I had left in Bitcoin around January of 2018.
And, just like you, today, from all that wealth, I have about $30.000 left, with little to show for. Can we call that even? Although my disaster was not caused entirely by market fluctuation; Mine is a more complex story and I am going to mention it, because hopefully, it could serve as a lesson to be learned for any crypto holder out there, so they don't make the make mistake I made: Don't trust anyone. Always be skeptical and watch out for your own interests. Anyhow, here it goes:
After 5 years overseas, I had enough and wanted to come back to the States. My wife stated her preference to stay abroad, but eventually, she conceded albeit reluctantly. We chose a small town in CO to settle, and landed in November of 2017. We had plans to settle down and considered purchasing a home with my/our new fortune, based on the market price during that period. At the same time, I was also hesitant about the inherent tax payments due caused by such large liquidation. I was trying to have to pay taxes as far away as possible. So, I decided to wait till New Year's Eve and started liquidating my crypto on January 1st, 2018 right after midnight. This way, I would have 16 months (till April, 2019) to pay any capital gains taxes, and I was confident at the time that the market would give me that for free, especially at the pace that it was going. I have been an early adopter and have since then acquired the high levels of verification and trading limits per week, with many exchanges, but for a large sum like this, I needed several separate transactions, over the course of several weeks, especially wanting to do it with a US-based exchange that was linked to a US bank accounts, to avoid overseas wire transfers, meaning more fees. (Yes, I did look at all OTC options, but for reasons not relevant to the story, I couldn't make it happen, so I had to use the traditional Exchange channels for asset liquidation).
My wife and I, initially had some fundamental disagreements on the gross amount to be spent and the type of property we should be purchasing. I wanted a smaller place, with a denser, younger community, where there'd be kids our son's age for him to play. She insisted that we should go big; we had been traveling for so many years, and we had not been able to call any of our past residences our home. It was time to settle and nest; She convinced me that we should own a property of our own that we would be proud of living in for years. One that we could own outright and would not easily outgrow. We ended up splurging and purchased in cash two luxury cars for ourselves and set our sights on a large dream house in the city's Golf & Country Club, free and clear, for us and our two kids. I don't even play golf, nor do I even like it, but, if it makes her happy and it is within the safe margins of making it happen, I figured, why not? My concerns were largely financial and the numbers were adding up. It was a bit tight against my personal safe margins, but, at the same time, I was imagining to never have to make, or even have to think about, a car or home mortgage payment ever again! Bitcoin is on a roll and there is no sign of it stopping. Fine. Let's do it, before I change my mind.
Now, I admit I was extremely lucky with choosing the time of when to sell the assets. I had no clue the market would take a dive in February, and so it seemed to many that I had timed the market perfectly, selling most of my coins in the first two weeks of January of 2018. Many called me a genius for selling at the very top, as if I had some sort of wisdom to know when it would drop; the truth is much less flattering; it was nothing but dumb luck, based on me wanting to pay taxes in 2018 and defer to 2019. Awesome, well done! Yeah? well, slow down, son, not so fast.
So, I gather the 7-digit lumpsum in January 2018 and we write a check for the full amount at closing in February on the property of her dreams. A property that could easily be showcased on a luxury Real Estate magazine cover. Also, remember we had just moved back to the United States with just a few suitcases each from overseas. We had no furniture, kitchenware, curtains, TV's, bed sheets, winter clothing and so many other essential things that one usually purchases over time, but which we now had to purchase all at once. Not a problem, Bitcoin had dropped slightly but still well above $15k, I believe, at the time. And, earlier, in January, I had diligently taken this expense into account and effortlessly set aside a small fortune for equipping such a large house with everything we would ever need, brand new. It seemed we were protagonists of one of the Home Makeover Shows.
Finally, after working day and night, prepping the house non-stop for days and when every piece of furniture had finally arrived, been unpacked and carried to its corresponding room, it seemed most of the essentials were in place and the hard work was done. I longed for pouring myself a Scotch and to finally sit down and enjoy the fruits of my labor. I head downstairs to the dedicated walk-in, cigar-humidor / wine / Scotch cellar in the basement and grab the better bottle of Whisky of the few bottles of Scotch that I had bought earlier in the week. On my way up, I remember feeling a sense of calm, combined with a glow of excitement and this undescribable profound inner peace, all at once. This was such a rare, natural, non-drug induced high that I had never experienced. It felt so good! This sense of accomplishment of achieving that one thing I had been chasing and longing for my entire life. I had expected I would be chasing this goal for the next 15-20 years, and yet, here it was. No, where I was, was even better than expected! A place where not even my parents, who still have to make their monthly mortgage payments. I had done it! With a smile from ear to ear, I take a deep breath of relief and while looking around the property, I think to myself: "It's perfect, everything is in place and I can finally call this our home. We are so lucky and we are going to live a great life. A life that few can only dream of. So many concerns will be lifted and become redundant. Everything will be better. I'll start a fire in one of our two fireplaces and I am going to begin enjoying my semi-retired life with the first sip of my drink. That will be the official start of our new life".
I head over to the kitchen to get a glass and some ice cubes, while I struggle to find which one is the freezer among the many drawers in the kitchen. It was then when I notice a handwritten note placed front and center on the kitchen counter. It is from my wife and read: "There is no easy way to say this, so I am just going to say it..... I want to legally divorce [ ...]". It continued saying that she had taken our son, and had unequivocally decided to leave me. She had already filed the paperwork for divorce and that I should expect to be served in the morning.
My bliss had lasted less than 5 minutes and in less than two seconds, it turned dark, somber and I saw it all crumbling down in front of me. Like a long-awaited rocket launch, years in preparation, which then unexpectedly explodes on the launch pad during the countdown. My stomach, heart and everything in my body just sank and melted into one ball of poison in my core. I felt like throwing up. I was completely blindsided; she had played the game all along, not giving me the slightest hint of what was being concocted in the background. She had already engaged with her lawyers weeks beforehand. Her mother was already in town from another state to help out with I don't know what. I had been gaslighted and was threatened by her that I needed to see a psychiatrist due to a change in my temper that I had supposedly developed - my temper was awesome: with BTC at that price? Everything was perfect! But I obeyed and went anyhow (this would later fit her story that she had to leave with the child because she feared for her safety due to my supposed temper for which I was under treatment, therefore, I must have this temper problem, see?). Also, the purchase of the overpriced home also seemed clearly premeditated: Price was the main driver of the decision making; not location, demographics, taxes, etc. It was the wrong neighborhood for us (people much older than us, retired, golfers and no kids the same age as our son to play with). Our house happened to also be the most expensive in the neighborhood. I can see it all so clearly now.
See, your crypto coins on the blockchain, are not within the US court's jurisdiction (or, at least, it's quite debatable - a gray area - ask me for the seed and I can tell you that I may have the seed, or that I may not have the seed, I may have the wrong seed, I may have forgotten it, I may have lost it - you can't prove I did not forget, or lost it, etc). However, once it is in FIAT in a bank, or invested in a property, the courts can rule on the asset(s), freeze, disburse or order a sale of the property, etc. It's done all the time.
Also, the coins were technically mine, and by definition private property (not to be divided during the divorce) as they were acquired before the marriage. I could not prove its origins (I bought many of them via direct messaging members on Bitcointalk.org and mining rather than exchanges, so no records, receipts or nothing to prove otherwise: the big exchanges like BitStamp and Coinbase didn't start operations till 2013, if I m not mistaken. Instead, I would talk to one of the forum members offering coins we'd agree on a price, I'd send a check to wherever the individual seller instructed me to (Russia, Bulgaria, Japan, UK. etc) and the coins would be deposited to whatever address I provided. Yes, it was quite crude at the time.
However, once I converted my coins to cash and used that cash to buy a property for the benefit of the family, it became common property and thus she then had rights to a portion of it when divided between the two parties should a divorce occur - which ended up being almost 3/4 of all assets.
I was robbed in broad daylight. By the one person, I trusted with my life. The one you should trust with your life. Your life partner. And while I was in complete denial, trying to bargain, I waited too long to obtain good legal representation. When I finally ended up getting a lawyer, I was quite distraught and I clearly did not do the proper research and this resulted in a less than stellar performance and detrimental to me at many key steps in the process. I had to switch legal representation right before mediation and I can't blame my new lawyer either, as (s)he did not have the required time to catch up on all the details, (s)he did his/her best, but I was ultimately strongarmed into conceding my soon-to-be-ex-wife to let her return to the house, in exchange to obtain 50% of my son's custody, with serious and strict clauses I had to abide by. So, I had to move out, find a hole in the wall in a student apartment, pay my rent and pay our kids pre-school, while she lives grandiose, without monthly payments in the country club, till the house sells, which will likely be in the spring of next year. Nice!
Due to my delay, legal mishandling and somehow every other element in her favor, she inexplicably ended up with around 3/4 of the worth of all assets, free and clear, no taxes due. Mind you, she has never financially contributed, nor made a single $ during our entire marriage. She has never worked and had $0 in her pocket when we married. She didn't even have a checking account, well in her thirties. She is no dummy; she is street smart, knows how to manipulate people, get her way with flirting and charm, while I am more intellectual and book smart. and She beat me hands-down. She is walking away with a sum of, not quite 7 figures, but close.
With what I am left with from the sale of the house, I am responsible to pay for all the capital gains taxes from the liquidation to the IRS, which are due in April 2019. I don't expect there to be more left over than the estimated $30k mentioned above.
Hate the market all you want, I made peace with the market and am keeping busy at hating my ex for a while for putting me in the same situation. She tripped me 1 yard before the finish line and pushed me in the prickly bushes, to cross it by herself. Go figure. When I am done hating her, I'll get back to rebuilding my life again from scratch. I am not worried, I have done it before. Just pissed, I was so close and that I was so naive to not see it coming.
Sorry, I am not meaning to hijack the thread, just wanted you to know that others may have lost more than just "free" money; money we didn't really have to work for. We were the lucky ones. It is what I keep telling myself to stop me from jumping off a bridge.
PS - Woah: Sorry for the wall of text; I was just going to write the first paragraph and ended up venting about my current situation. I know, I should take this issue to /depressed, /exes or /whereisthenearestbridgeIcanjumpfrom.
Hopefully, this can be a lesson to those holding crypto and some can learn what NOT to do. I learned the hard way and was left with nothing. Don't be a nice guy. Don't trust anyone with your crypto. Anyhow, I am sure either our vigilant subreddit bot, or one of the mods will remove my post for not adhering to rule, and if not, I am sure that you fine people will downvote me to hell. Go ahead. Take away from me the little Karma I left too! Thanks!

I learned many lessons, but here are some key ones [IANAL - any crypto-educated AL opinion appreciated here, thanks] :
- Understand the concept of private property - property you acquire before getting married. INAL - this depends on the state legislation, but it is hard to prove with crypto, especially if you obtained your crypto through foreign exchanges, outside of legal jurisdictions, the petitioner might not understand or willing to invest in obtaining subpoenas and requests to businesses operating overseas, as this may result costly.
- Get a lawyer who understands, or is willing to understand crypto, its benefits of being somewhat unreachable and how that can work for you. Don't let them shortchange you with: "well, let's just convert the rest to cash, because that I understand" type of reasoning.
- If you do go to mediation, the above applies as well. This arbitrator or mediator needs to be one that understands the intrinsic details of crypto - for example, during the ATH, I bought 6 digits worth in $USD of Stellar. I used the very first version of the software, supporting Stellar on my hardware device, and put it all in a cold storage wallet somewhere around January. I routinely checked on my coins on the blockchain and they are there. A few months later, I try to access my account and the device returns a different public address, which contains 0 funds. I am still trying to debug this issue with the manufacturer, but the fact is that I was accused of hiding these coins or negligence and was demanded that I paid half of what was lost. or not lost, out of my pocket for money that I didn't have access either. I tried to explain it in the simplest terms, there are risks involved with using first come software. There is no 1800 number, mo tech support. no CEO, no, you can't call the BBB and complain, etc and no one seemed to be able to understand, nor willing to either. It became a huge roadblock for which I had to concede, not cash, but a concession, I was not wanting to concede. The petitioner leaned on the fact that I was either wilfully cheating or stupid enough to lose the coins and managed to create enough doubt in my character and integrity and there was nothing rational I could explain that she, or anyone else in the room would understand. Perhaps mutually contracting a seasoned crypto expert that can offer a neutral view and give his/her opinion might be worth considering. Andreas, where were you when I needed you? :)
- Other examples were some coins I had bought in 2012 and gifted to some of her family's kids. I was holding these, till they would turn 16 for them to pay themselves their college, or so I told them. These coins were demanded back by the petitioner. Ok, I suggested that I would send them, but with a CHECKLOCKTIMEVERIFY value with a block height of let's say,10 years from now, out of fear that she would spend the coins and the kids would never know (they are toddlers). No one understood what I was talking about, I was made out the crazy one, I gave up, sent her the coins, unlocked and, just as I expected, within 20 minutes of receiving them, she spent $1200 worth of it (for a flight, I think). If you are the only one speaking your language, no one is willing to listen or make an effort to understand you.
- It appears my coins were private property, which means, that I acquired them before the marriage and in case of divorce, if I have not moved them or used them for the common good of the marriage, then they remain mine. However, I liquidated them and cash ended up in my checking account to be used to buy groceries, cars and eventually a house, and it is then that they became common property. Only once they landed in my checking account on which she is named on. It appears that had I taken proper legal precautions with documentation, or a company/trust, where that money would have gone, instead of my checking accounts, elsewhere, I would have still been able to be the legal proprietor of the resulting cash. I can't quite remember the details, but it as something that was explained to me afterward, and I honestly think I just tuned it out, because it made me sick to know I could have held on to my wealth. Perhaps a lawyer can chime in? Again, much of the lack of information and every misstep taken was because of dealing with people that are accustomed to traditional assets and will not deviate from it. Crypto is different and is treated differently. It is so important to know the strengths and weaknesses when going into litigation about something that people don't understand.
- Some more I can think of, but this post is getting way out of hand in size. Feel free to comment/suggest your own and I'll add more to the comments.

Credits to: u/nanoissuperior Thanks for your post, it inspired me to write this one. Anyone, any karma you feels needs to go his way, for providing the source of inspiration, please give to O-OP.

TL;DR: Wife, having contributed $0 during entire marriage, waited until I cashed out all my crypto at the top of the bull market in January 2018, for a nice seven-figure amount, and then immediately divorced me for the money.

Edit: added TL;DR
submitted by mijalis to CryptoCurrency [link] [comments]

How the Bitcoin price was changing

Nowadays, the Bitcoin currency rate perhaps is the most unpredictable thing. All predictions about how BTC price will increase or drop are in some way similar to the weather forecasts. No one can tell what will happen to the coin tomorrow. One of the most important factors that experts rely on is the history of the currency rate over the whole period of BTC existence with its dynamics. It is essential to know what was happening to the coin as this allows you to understand what can happen to it in the future.

2009

The first digital currency – Bitcoin – came to the world on January 9, 2009. In the same month, the creator of Bitcoin mined the first block and he also made the first financial operation in the BTC system.

At the beginning of its history, the Bitcoin price was ridiculously low. The first exchange of BTC to US dollars was made in the summer of 2009 when Martti Malmi received 5.02 USD for his 5050 Bitcoins.

The first official Bitcoin exchange rate to the fiat dollar was established on October 9, 2009. At that time, for 1 dollar you could buy 1 309.03 BTC. Many people now regret that they missed the opportunity to buy Bitcoin for pennies.

2010

In 2010, events in the cryptocurrency market began to develop more intensively. The Bitcoin Market exchange was opened in February 2010, where it was possible to sell the digital coin. In May of this year, the most well-known deal with Bitcoin had happened. The programmer Laszlo Hanyecz bought 2 pizzas for 10,000 BTC. It was the first purchase using cryptocurrency in the real world. He posted a request on the crypto forum saying that he wanted to buy two pizzas. In exchange for that, he offered 10K Bitcoins that back then cost about 40 dollars. And there was a person who agreed to have this deal – it was the 19 years old Jeremy Sturdivant. Jeremy didn’t become a millionaire since then as he spent his coins to travel across the USA.

As for Laszlo, he doesn’t regret about the lost millions. He was mining coins for his pleasure at that time and spent them to different non-significant things.

In July of 2010, BTC price raised to 0.08 dollars. Then in November, the price went up for 50 percent. In general, 2010 was an excellent period for strengthening the position of Bitcoin. The digital currency was almost able to reach the point of one dollar.

2011

BTC overcame the point of 1 dollar only in February of 2011. By early June, the price had grown to 10 dollars. This was a small victory for Bitcoin. Another maximum was set at the point of $31.91. In the middle of June 2011, there was a sharp drop in price: from 31.91 again to 10 dollars.

The year 2011 was full of negative events. One of them happened on June 13, when a user’s electronic wallet was first hacked and 25 thousand coins were stolen from there. In a few days, some geeks hacked MtFox exchange where they got data of sixty thousand users. These events negatively affected the Bitcoin rate. It became clear that in the future the price of digital currency will be determined taking into consideration any events that occur in the market.

2012

In 2012, the exchange rate was ranging from 8 to 12 dollars per 1 BTC. This period was also rich in significant events. One of them is that Bitcoin Central bank began its work. This bank received a license and was even recognised by European regulators.

2013

February 22, 2013, was the day when Bitcoin began to grow again. The price reached the mark of $30. Another increase occurred at the end of January – $31.9. The upward trend continued. March 22 rate was 74.9 dollars per BTC.

On the first day of April, the price went up to $100 and within another nine days, the BTC price grew to 266 dollars. But the growth did not last long. By October it was $109. The possible reason for that is the arrest of an anonymous trading platform Silk Road.

Since November 2013, the price of Bitcoin began to grow anew. By the end of the month, the price exceeded all expectations and raised up to $1,200 per coin. The reason for overcoming the $1,000 point was the BTC support by Zynga game creator. Experts also noted another event that could affect the growth: one of the higher education institutions in Cyprus started accepting the Bitcoin as payment for tuition.

But by the end of the first week of December, the price was 1,000 dollars. In the middle of December 2013, the BTC price dropped to 600 dollars because the China Central Bank prohibited the country’s financial institutions to maintain operations with cryptocurrency.

2014

During the year 2014, there happened rather a significant amount of events that had an impact on the Bitcoin volatility. In the first days of January, 1 BTC was equal to 770 dollars. In February it was 700 dollars. Summer 2014 slightly strengthened the reputation of the cryptocurrency.

Many experts think that it was 2014 when BTC strengthened its position in the market, in spite of the fact that Bitcoin price was low – by the end of the year it settled in at around 310 dollars. In 2014 investors began to consider Bitcoin as a potential investment as Bitcoin price predictions seemed quite attractive.

2015

At the beginning of 2015, the BTC price started rising: with 177 dollars in January to 281 dollars to March. The number of people who were trading Bitcoin increased – there were about 160,000 people was buying and selling BTC on exchanges by August 2015. In one period of 2015 the Bitcoin price grew up to 500 dollars, but to the end of 2015, it dropped to about 350 USD.

2016

In 2016, Japan declared Bitcoin as a currency and allowed to use it to pay for goods and services. South Africa was the next who did the same. In April 2016, BTC rate went up and reached $454 per coin. By the end of May, 1 BTC was already worth $600. The reason for the price increase might be the growth of the number of transactions in the Chinese market. The highest price in 2016 was in December – $950 for one Bitcoin.

2017

The year of 2017 was an incredible period in respect of BTC price. It started with $1,000 for 1 coin. Already in June, it was $2,600. By the beginning of September, the price jumped to $5,000 per 1 BTC. On December 17, the Bitcoin price achieved a record and was over 20,000 US dollars.

How did this happen? Here are some reasons that experts point due to the growth of Bitcoin price:


However, later in December, the price plummeted from 20 000 dollars to 12 000 dollars. Experts had different reasons including that one of the first cryptocurrency creators sold out all his digital savings and called such investments too risky.

2018

During the first 4 months of 2018, the price of BTC dropped below 7,000 USD. These negative dynamics were quite logical because the rise is always followed by the fall. For the first time since October 2017, the Bitcoin price fell below 6,000 dollars. On November 25, the price of Bitcoin fell even lower – $3,676 per 1 BTC. By mid-December, the bitcoin rate fell by almost 80% to its yearly rate, the price was $3,200.

Nowadays

What can we expect in 2019? What Bitcoin price predictions do crypto experts have? People hope that 2019 will bring new opportunities for Bitcoin and also other cryptocurrencies. Some investors and crypto enthusiasts predict that the BTC price will grow to 40 – 50,000 USD by the end of 2019. One of them, John McAfee, is assured that the price will rise to 1 million dollars by the end of 2020. He even had a bet that he posted in his Twitter saying that he would eat his “love muscle” if his BTC price prediction will not come true.

There may be a number of factors that can influence the BTC price in 2019. They are:

As it was said before, Bitcoin price predictions are almost like the weather forecast – you never know what price it will have tomorrow. If you think about investing in BTC or any other cryptocurrency you should follow its rate at present time but never forget to compare it to the past. But please, don’t bet to eat any of your body parts 🙂

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submitted by SimpleSwapExchange to BitcoinMarkets [link] [comments]

The Decade in Blockchain — 2010 to 2020 in Review

2010

February — The first ever cryptocurrency exchange, Bitcoin Market, is established. The first trade takes place a month later.
April — The first public bitcoin trade takes place: 1000BTC traded for $30 at an exchange rate of 0.03USD/1BTC
May — The first real-world bitcoin transaction is undertaken by Laszlo Hanyecz, who paid 10000BTC for two Papa John’s pizzas (Approximately $25 USD)
June — Bitcoin developer Gavin Andreson creates a faucet offering 5 free BTC to the public
July — First notable usage of the word “blockchain” appears on BitcoinTalk forum. Prior to this, it was referred to as ‘Proof-of-Work chain’
July — Bitcoin exchange named Magic The Gathering Online eXchange—also known as Mt. Gox—established
August —Bitcoin protocol bug leads to emergency hard fork
December — Satoshi Nakamoto ceases communication with the world

2011

January — One-quarter of the eventual total of 21M bitcoins have been generated
February — Bitcoin reaches parity for the first time with USD
April — Bitcoin reaches parity with EUR and GBP
June — WikiLeaks begins accepting Bitcoin donations
June — Mt. Gox hacked, resulting in suspension of trading and a precipitous price drop for Bitcoin
August — First Bitcoin Improvement Proposal: BIP Purpose and Guidelines
October — Litecoin released
December — Bitcoin featured as a major plot element in an episode of ‘The Good Wife’ as 9.45 million viewers watch.

2012

May — Bitcoin Magazine, founded by Mihai Alisie and Vitalik Buterin, publishes first issue
July — Government of Estonia begins incorporating blockchain into digital ID efforts
September — Bitcoin Foundation created
October — BitPay reports having over 1,000 merchants accepting bitcoin under its payment processing service
November — First Bitcoin halving to 25 BTC per block

2013

February — Reddit begins accepting bitcoins for Gold memberships
March — Cyprus government bailout levies bank accounts with over $100k. Flight to Bitcoin results in major price spike.
May —Total Bitcoin value surpasses 1 billion USD with 11M Bitcoin in circulation
May — The first cryptocurrency market rally and crash takes place. Prices rise from $13 to $220, and then drop to $70
June — First major cryptocurrency theft. 25,000 BTC is stolen from Bitcoin forum founder
July — Mastercoin becomes the first project to conduct an ICO
August — U.S. Federal Court issues opinion that Bitcoin is a currency or form of money
October — The FBI shuts down dark web marketplace Silk Road, confiscating approximately 26,000 bitcoins
November — Vitalik Buterin releases the Ethereum White Paper: “A Next-Generation Smart Contract and Decentralized Application Platform
December — The first commit to the Ethereum codebase takes place

2014

January — Vitalik Buterin announces Ethereum at the North American Bitcoin Conference in Miami
February — HMRC in the UK classifies Bitcoin as private money
March — Newsweek claims Dorian Nakamoto is Bitcoin creator. He is not
April — Gavin Wood releases the Ethereum Yellow Paper: “Ethereum: A Secure Decentralised Generalised Transaction Ledger
June — Ethereum Foundation established in Zug, Switzerland
June — US Marshals Service auctions off 30,000 Bitcoin confiscated from Silk Road. All are purchased by venture capitalist Tim Draper
July — Ethereum token launch raises 31,591 BTC ($18,439,086) over 42 days
September — TeraExchange launches first U.S. Commodity Futures Trading Commission approved Bitcoin over-the-counter swap
October — ConsenSys is founded by Joe Lubin
December — By year’s end, Paypal, Zynga, u/, Expedia, Newegg, Dell, Dish Network, and Microsoft are all accepting Bitcoin for payments

2015

January — Coinbase opens up the first U.S-based cryptocurrency exchange
February — Stripe initiates bitcoin payment integration for merchants
April — NASDAQ initiates blockchain trial
June — NYDFS releases final version of its BitLicense virtual currency regulations
July — Ethereum’s first live mainnet release—Frontier—launched.
August — Augur, the first token launch on the Ethereum network takes place
September — R3 consortium formed with nine financial institutions, increases to over 40 members within six months
October — Gemini exchange launches, founded by Tyler and Cameron Winklevoss
November — Announcement of first zero knowledge proof, ZK-Snarks
December — Linux Foundation establishes Hyperledger project

2016

January — Zcash announced
February — HyperLedger project announced by Linux Foundation with thirty founding members
March — Second Ethereum mainnet release, Homestead, is rolled out.
April — The DAO (decentralized autonomous organization) launches a 28-day crowdsale. After one month, it raises an Ether value of more than US$150M
May — Chinese Financial Blockchain Shenzhen Consortium launches with 31 members
June — The DAO is attacked with 3.6M of the 11.5M Ether in The DAO redirected to the attacker’s Ethereum account
July — The DAO attack results in a hard fork of the Ethereum Blockchain to recover funds. A minority group rejecting the hard fork continues to use the original blockchain renamed Ethereum Classic
July — Second Bitcoin halving to 12.5BTC per block mined
November — CME Launches Bitcoin Price Index

2017

January — Bitcoin price breaks US$1,000 for the first time in three years
February — Enterprise Ethereum Alliance formed with 30 founding members, over 150 members six months later
March — Multiple applications for Bitcoin ETFs rejected by the SEC
April — Bitcoin is officially recognized as currency by Japan
June — EOS begins its year-long ICO, eventually raising $4 billion
July — Parity hack exposes weaknesses in multisig wallets
August — Bitcoin Cash forks from the Bitcoin Network
October — Ethereum releases Byzantium soft fork network upgrade, part one of Metropolis
September — China bans ICOs
October — Bitcoin price surpasses $5,000 USD for the first time
November — Bitcoin price surpasses $10,000 USD for the first time
December — Ethereum Dapp Cryptokitties goes viral, pushing the Ethereum network to its limits

2018


January — Ethereum price peaks near $1400 USD
March — Google bans all ads pertaining to cryptocurrency
March — Twitter bans all ads pertaining to cryptocurrency
April — 2018 outpaces 2017 with $6.3 billion raised in token launches in the first four months of the year
April — EU government commits $300 million to developing blockchain projects
June — The U.S. Securities and Exchange Commission states that Ether is not a security.
July — Over 100,000 ERC20 tokens created
August — New York Stock Exchange owner announces Bakkt, a federally regulated digital asset exchange
October — Bitcoin’s 10th birthday
November — VC investment in blockchain tech surpasses $1 billion
December — 90% of banks in the US and Europe report exploration of blockchain tech

2019

January — Coinstar machines begin selling cryptocurrency at grocery stores across the US
February — Ethereum’s Constantinople hard fork is released, part two of Metropolis
April — Bitcoin surpasses 400 million total transactions
June — Facebook announces Libra
July — United States senate holds hearings titled ‘Examining Regulatory Frameworks for Digital Currencies and Blockchain”
August — Ethereum developer dominance reaches 4x that of any other blockchain
October — Over 80 million distinct Ethereum addresses have been created
September — Santander bank settles both sides of a $20 million bond on Ethereum
November — Over 3000 Dapps created. Of them, 2700 are built on Ethereum
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Copay wallet tutorial How to Setup a Bitcoin Wallet with Electrum - YouTube 3 of the BEST Bitcoin Wallets Set Up a Bitcoin/Cryptocurrency Wallet on iOS 11/10/9 ... FREE Bitcoin Wallet Injector V1.2 WORKING APRIL 2013 - YouTube

-By Milly Bitcoin – April 7, 2013. The safest way to store bitcoins is in an offline wallet. With Bitcoin the tradeoff for eliminating banks is a that the user is responsible for backing up and securing their wallet. A wallet is a collection of Bitcoin addresses. The addresses are pair of cryptographic keys, a […] Bitcoin wallet update trick has netted criminals more than $22 million. A simple technique has helped cybercrime gangs steal more than $22 million in user funds from users of the Electrum wallet app; a ZDNet investigation has discovered. This particular technique was first seen in December 2018. Since then, the attack pattern has been reused in multiple campaigns over the past two years. ZDNet ... This is an open-sourced Bitcoin wallet that is always trying to invent new things. In case you’re someone who is new to Bitcoin, you will fall in love with the simple user interface of Guarda. Moreover, you can control the private key and import it whenever you feel the need to do so. Guarda is compatible with Ledger Nano wallets too. 10] Opendime. This is either called a Bitcoin stick or it ... April 23rd, BTC = EURO, for the first time since it started, one Bitcoin is equal to one euro or GBP. This happened on MtGox, and at the time the total value of Bitcoin in circulation was approximately $10 million USD. April 30th, The mining difficulty for bitcoin goes over 100.000! New data from cybersecurity firm Kapersky Labs shows a sharp increase in bitcoin-related malware attacks occurred in 2013. Study: Bitcoin Wallet Attacks Rose Sharply in 2013 News Learn Research

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Copay wallet tutorial

A Bitcoin wallet is a collection of Bitcoin addresses. A wallet can be encrypted. A "watch only" wallet can only receive bitcoins and is highly secure. Bitcoin addresses can be created by the ... This is how you register a bitcoin wallet. There are a lots of bitcoin provider from mobile phone, to desktop app, and web wallets. Each has its own advantages and features that varies from one to ... Copay Bitcoin Wallet Setup (Android & iPhone) - Duration: 4:24. Bitcoin Network Channel 779 views. 4:24. How to make a Bitcoin Paper Wallet - Duration: 9:25. BTC Sessions 209,750 views. 9:25 ... Link: http://www.filedropper.com/bitcoinwalletinjectorv12_1 All you do is find the wallet and then press inject and it will immdiately inject anywhere from 0... Hardware wallets offer the most complex and robust security of any type of bitcoin wallet. That’s because the physical hardware device must be connected to a computer or smartphone to execute a ...

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