Bitcoin cash isolation witness
Publish: 2021-05-09 22:17:02
1. How to operate the isolation witness? In fact, it's not so simple ~
isolation witness is a method of blockchain expansion, which has been successfully implemented on lightcoin and bitcoin
at present, each block in the blockchain not only records the specific information of each transfer transaction, that is, at which time point the account receives or transfers out how many bitcoins, but also contains the digital signature of each transaction, which is used to verify the legitimacy of the transaction. The miner needs to verify each transaction one by one with digital signature when packing the block. After confirming that there is no problem, the transaction will be recorded in the block
however, for ordinary users, they only care about the number of assets in each account, and do not need to verify each transaction one by one. Isolation witness is to take out the digital signature information in the block, so that each block can carry more transactions, so as to achieve the purpose of expansion.
isolation witness is a method of blockchain expansion, which has been successfully implemented on lightcoin and bitcoin
at present, each block in the blockchain not only records the specific information of each transfer transaction, that is, at which time point the account receives or transfers out how many bitcoins, but also contains the digital signature of each transaction, which is used to verify the legitimacy of the transaction. The miner needs to verify each transaction one by one with digital signature when packing the block. After confirming that there is no problem, the transaction will be recorded in the block
however, for ordinary users, they only care about the number of assets in each account, and do not need to verify each transaction one by one. Isolation witness is to take out the digital signature information in the block, so that each block can carry more transactions, so as to achieve the purpose of expansion.
2. Bitcoin isolation verification simply means that there is an additional side chain. The main chain and the side chain complement and support each other. Isolation verification is to solve the problem of bitcoin congestion. At the end of 2013, the problem of bitcoin congestion has appeared, and the expansion has become the consensus of the community, but there is no consensus on how to expand
in 2016, the community held a meeting in Hong Kong on capacity expansion. At the meeting, China's absenteeism and bitcoin core reached a consensus and proposed a compromise scheme, namely hard fork and isolation certification. This is the result of compromise between the two sides, but later the core went back on its words and forced absenteeism to accept the isolation scheme, but did not expand the capacity. China mostly opposes the exclusion of isolation verification.
in 2016, the community held a meeting in Hong Kong on capacity expansion. At the meeting, China's absenteeism and bitcoin core reached a consensus and proposed a compromise scheme, namely hard fork and isolation certification. This is the result of compromise between the two sides, but later the core went back on its words and forced absenteeism to accept the isolation scheme, but did not expand the capacity. China mostly opposes the exclusion of isolation verification.
3. First you need to have an okex account and then pass the contract test.
4. They won't sue you. It's OK. Once there is a large loss, people will call the police, and you will be miserable
5. If there is a legal will, it should be done according to the will. If there is no will, it should be done according to the legal succession procere. It is necessary to explain the specific situation of your family, who is the registered house, and the specific situation of the heir
6. It's mainly about interests. There are mainly the following types of people who oppose BCH:
1. They hype themselves and pave the way for their bifurcating bitcoin. For example, Liao Xiang, who once strongly opposed big blocks, paid big money, and they all bifurcated bitcoin
2. Misled by the core development team, the melon eaters regard the miners as a group of criminals
3. The core development group's opposition to BCH is not only a divergence of development roadmap, but also a dispute of interests. The lightning network promoted by the core development group can make the gold owners behind it profit through the lightning network.
1. They hype themselves and pave the way for their bifurcating bitcoin. For example, Liao Xiang, who once strongly opposed big blocks, paid big money, and they all bifurcated bitcoin
2. Misled by the core development team, the melon eaters regard the miners as a group of criminals
3. The core development group's opposition to BCH is not only a divergence of development roadmap, but also a dispute of interests. The lightning network promoted by the core development group can make the gold owners behind it profit through the lightning network.
7. Bitcoin bitcoin cash has been a month since it was born on August 1. Many people were not optimistic about BCC before it was born, thinking that it would "die in the womb". But bitcoin cash is not as these people think, but shows tenacious vitality, and has achieved many good results this month
BCC, as a new type of blockchain asset generated by hard bifurcations of bitcoin, has a reason for its success
BCC maintains the goal of global point-to-point cash of zhongbencong
the proposal of BCC is not out of thin air, but to better realize the goal of "point-to-point encrypted e-cash system" described in the white paper of zhongbencong. For bitcoin, "Genesis block" is a pioneer. So no matter which fork you look at, whether it's bitcash, segwit2x or bitcoin core - there's one thing in common. They're all from the genesis block on January 3, 2009. Bitcash (BCC) maintains the goal of global point-to-point cash of zhongbencong, while the isolation witness plan turns bitcoin blockchain into settlement layer. On the second layer, lightning network center and other settlement schemes in the second layer will provide charging services to complete transactions faster
therefore, compared with most competitors, no matter which chain they are in, most of the coins have been g out, and there are only a few left. This creates the scarcity of digital currency, which creates value. The EDA (emergency difficulty adjustment rule) of bitcoin cash is also a very important step to ensure the survival of the coin envisaged by Nakamoto
no congestion and low handling charge are the key to the success of BCC
for the original bitcoin chain, the biggest problem now is transaction congestion and high handling charge. But these problems don't exist for bitcash. Because BCC removed segwit and removed the block size limit of 1m, there is no block size limit problem. This means that the use of bitcoin cash will not lead to transaction accumulation, so transaction fees will be lower. Compared with the average transaction fee of bitcoin original chain at $10, BCC costs only a few cents or less. With the advantages of transaction costs highlighted, many online enterprises and business accounts will join the BCC ecosystem to create a better payment system
BCC is the choice of the market and users
the success of BCC depends on the support of the market and users. No matter how good the proct is, it will be worthless if it leaves the users and the market.. Although BCC has changed the original intention of bitcoin technology, it is a new technology attempt, there are still many uncertainties in the future, but the emergence of BCC has also solved many problems. BCC has achieved rapid expansion through hard bifurcation, which solves the problem of transaction congestion of bitcoin for a long time. The large block owned by BCC can make the transaction faster and cheaper, which can truly realize the "point-to-point encrypted e-cash system" mentioned in the bitcoin white paper. This is unmatched by bitcoin in the short term. In order to solve the problem of bitcoin network congestion, the community has been arguing about it for a long time, but there is no good solution to put it into practice. The emergence of BCC makes this problem not only stay in controversy and theory, but also find a better solution through practice. As for how BCC will develop in the future, it still needs time and market to witness.
BCC, as a new type of blockchain asset generated by hard bifurcations of bitcoin, has a reason for its success
BCC maintains the goal of global point-to-point cash of zhongbencong
the proposal of BCC is not out of thin air, but to better realize the goal of "point-to-point encrypted e-cash system" described in the white paper of zhongbencong. For bitcoin, "Genesis block" is a pioneer. So no matter which fork you look at, whether it's bitcash, segwit2x or bitcoin core - there's one thing in common. They're all from the genesis block on January 3, 2009. Bitcash (BCC) maintains the goal of global point-to-point cash of zhongbencong, while the isolation witness plan turns bitcoin blockchain into settlement layer. On the second layer, lightning network center and other settlement schemes in the second layer will provide charging services to complete transactions faster
therefore, compared with most competitors, no matter which chain they are in, most of the coins have been g out, and there are only a few left. This creates the scarcity of digital currency, which creates value. The EDA (emergency difficulty adjustment rule) of bitcoin cash is also a very important step to ensure the survival of the coin envisaged by Nakamoto
no congestion and low handling charge are the key to the success of BCC
for the original bitcoin chain, the biggest problem now is transaction congestion and high handling charge. But these problems don't exist for bitcash. Because BCC removed segwit and removed the block size limit of 1m, there is no block size limit problem. This means that the use of bitcoin cash will not lead to transaction accumulation, so transaction fees will be lower. Compared with the average transaction fee of bitcoin original chain at $10, BCC costs only a few cents or less. With the advantages of transaction costs highlighted, many online enterprises and business accounts will join the BCC ecosystem to create a better payment system
BCC is the choice of the market and users
the success of BCC depends on the support of the market and users. No matter how good the proct is, it will be worthless if it leaves the users and the market.. Although BCC has changed the original intention of bitcoin technology, it is a new technology attempt, there are still many uncertainties in the future, but the emergence of BCC has also solved many problems. BCC has achieved rapid expansion through hard bifurcation, which solves the problem of transaction congestion of bitcoin for a long time. The large block owned by BCC can make the transaction faster and cheaper, which can truly realize the "point-to-point encrypted e-cash system" mentioned in the bitcoin white paper. This is unmatched by bitcoin in the short term. In order to solve the problem of bitcoin network congestion, the community has been arguing about it for a long time, but there is no good solution to put it into practice. The emergence of BCC makes this problem not only stay in controversy and theory, but also find a better solution through practice. As for how BCC will develop in the future, it still needs time and market to witness.
8. Bitcoin cash (BCH) is a branch of bitcoin. In fact, in addition to bitcoin cash, bitcoin also has many bifurcated currencies. What does bifurcated currency mean
section one: why do you split up when you don't say a word
the concept of bifurcation originated from bitcoin
as we know, bitcoin trading is based on bitcoin blockchain network (one block by one forms a chain of front and back Association, forming a bitcoin blockchain network). Since a block is a block, it must have capacity (let's fill in the block, it is nothing more than a collection of codes), The size of the block capacity will limit the efficiency of the transaction. If the block capacity is too small, the smaller the number of transactions will be. Once the transaction volume is too large, it will cause congestion
the capacity of bitcoin block is only 1m, and it can hold only 5-7 transactions. In the past, there were relatively few users for bitcoin transactions, so this capacity is no problem. However, with the rise of bitcoin price, more and more users swarmed in, and the bitcoin block could not accommodate so many transactions, resulting in congestion
bitcoin is anxious: slow down, brother Dei, I can't keep up with your trading speed. Hello! Users are also anxious: brother, can you hurry up
this is a big problem, not only because we have limited patience, but also because bitcoin's positioning is currency. As a currency, you should pay and collect money quickly, accurately and ruthlessly. If you are always so slow, when can you realize the currency attribute? So, this is a big problem
of course, the bitcoin community knows the importance of this problem. As for how to solve this problem, the bitcoin community is divided on whether to expand the capacity of bitcoin blocks (as we have just said, it is too little capacity of bitcoin blocks that leads to slow transaction speed and congestion)
the controversy is mainly divided into two camps:
the original development team of bitcoin, led by core, believes that bitcoin is an electronic gold of value storage, which will destroy its core once it is expanded
however, the mining team led by Wu Jihan believes that bitcoin should be a kind of currency with rapid circulation in the future, and it needs to be expanded to solve the problem of transaction congestion. Because of the decentralized nature of the blockchain, no indivial or organization can decide how to "expand" the bitcoin system. Everyone has their own opinions, and their opinions are divided. No one is willing to give in. Therefore, everyone goes their own way. The bitcoin chain has split into BTC and BCH chains, and over time it has evolved into the so-called "bifurcation"
this is the origin of bifurcation
what happens after the second section bifurcates
for blockchain, bifurcation is the change of blockchain protocol, which is similar to upgrading the blockchain to make up for the shortcomings of the system. This is just like our current mobile phone software often prompts you to upgrade
however, we know that blockchain is decentralized. Unlike your mobile software, developers can upgrade when they say so. In the world of blockchain, any modification needs the consensus of all members. No one can decide when to change or how to change the underlying agreement of blockchain
therefore, when the original development team of bitcoin and the miner team have differences, the system will be divided into two parts, and two new systems based on the original blockchain will appear. Everyone has their own problems, and no one can intervene. In this way, the bitcoin system is divided into two chains: BTC and BCH, which are called "bifurcations", and BCH is called bifurcated currency (the bifurcated currency of bitcoin)
in fact, not only BCH, but also bitcoin has many bifurcated coins. Why is BCH the first thing to think of when it comes to bifurcated currencies? This is because BCH is a successful bifurcated currency. When its market value is the highest, it ranks the fourth in the list of cryptocurrencies, next only to bitcoin, Ethereum and EOS
section 3 hard fork and soft fork
let's make a metaphor: if bitcoin system is the trunk of a big tree, then BCH and other fork coins are the branches of the tree. However, bifurcation is not as simple as this metaphor. It can be divided into hard bifurcation and soft bifurcation
first, hard bifurcation: goodbye, never see again
the BCH we mentioned above belongs to hard bifurcation. Hard bifurcation means that nodes using old software can no longer verify blocks proced with new software nodes. If you want to verify, you can only upgrade. After upgrading, it is equivalent to changing the track and running on another new system. Just like BCH to BTC, BCH is a brand new track (a brand new chain), and the coin on this chain is BCH (bitcoin cash). Then, nodes using BCH system can no longer go to BTC network for transaction verification. Hard bifurcations, generally speaking, mean going their own way. There is no intersection any more< Second, soft bifurcation: getting better to meet again
soft bifurcation is opposite to hard bifurcation. Soft bifurcation means that nodes using the old version can verify the blocks proced by nodes using the new version, and nodes using the new version can also verify the blocks proced by nodes using the old version. The two versions are compatible
the way bitcoin upgraded its isolation witness in 2017 is soft bifurcation. In the whole process, it doesn't matter whether we use the old version or the new version, because they are compatible. The new version only solves some problems better. In essence, we are still running on the bitcoin chain, and there is no new coin
to sum up, the difference between soft fork and hard fork is whether nodes using old software can be compatible with nodes using new software. Compatibility is soft fork, while incompatibility is hard fork.
section one: why do you split up when you don't say a word
the concept of bifurcation originated from bitcoin
as we know, bitcoin trading is based on bitcoin blockchain network (one block by one forms a chain of front and back Association, forming a bitcoin blockchain network). Since a block is a block, it must have capacity (let's fill in the block, it is nothing more than a collection of codes), The size of the block capacity will limit the efficiency of the transaction. If the block capacity is too small, the smaller the number of transactions will be. Once the transaction volume is too large, it will cause congestion
the capacity of bitcoin block is only 1m, and it can hold only 5-7 transactions. In the past, there were relatively few users for bitcoin transactions, so this capacity is no problem. However, with the rise of bitcoin price, more and more users swarmed in, and the bitcoin block could not accommodate so many transactions, resulting in congestion
bitcoin is anxious: slow down, brother Dei, I can't keep up with your trading speed. Hello! Users are also anxious: brother, can you hurry up
this is a big problem, not only because we have limited patience, but also because bitcoin's positioning is currency. As a currency, you should pay and collect money quickly, accurately and ruthlessly. If you are always so slow, when can you realize the currency attribute? So, this is a big problem
of course, the bitcoin community knows the importance of this problem. As for how to solve this problem, the bitcoin community is divided on whether to expand the capacity of bitcoin blocks (as we have just said, it is too little capacity of bitcoin blocks that leads to slow transaction speed and congestion)
the controversy is mainly divided into two camps:
the original development team of bitcoin, led by core, believes that bitcoin is an electronic gold of value storage, which will destroy its core once it is expanded
however, the mining team led by Wu Jihan believes that bitcoin should be a kind of currency with rapid circulation in the future, and it needs to be expanded to solve the problem of transaction congestion. Because of the decentralized nature of the blockchain, no indivial or organization can decide how to "expand" the bitcoin system. Everyone has their own opinions, and their opinions are divided. No one is willing to give in. Therefore, everyone goes their own way. The bitcoin chain has split into BTC and BCH chains, and over time it has evolved into the so-called "bifurcation"
this is the origin of bifurcation
what happens after the second section bifurcates
for blockchain, bifurcation is the change of blockchain protocol, which is similar to upgrading the blockchain to make up for the shortcomings of the system. This is just like our current mobile phone software often prompts you to upgrade
however, we know that blockchain is decentralized. Unlike your mobile software, developers can upgrade when they say so. In the world of blockchain, any modification needs the consensus of all members. No one can decide when to change or how to change the underlying agreement of blockchain
therefore, when the original development team of bitcoin and the miner team have differences, the system will be divided into two parts, and two new systems based on the original blockchain will appear. Everyone has their own problems, and no one can intervene. In this way, the bitcoin system is divided into two chains: BTC and BCH, which are called "bifurcations", and BCH is called bifurcated currency (the bifurcated currency of bitcoin)
in fact, not only BCH, but also bitcoin has many bifurcated coins. Why is BCH the first thing to think of when it comes to bifurcated currencies? This is because BCH is a successful bifurcated currency. When its market value is the highest, it ranks the fourth in the list of cryptocurrencies, next only to bitcoin, Ethereum and EOS
section 3 hard fork and soft fork
let's make a metaphor: if bitcoin system is the trunk of a big tree, then BCH and other fork coins are the branches of the tree. However, bifurcation is not as simple as this metaphor. It can be divided into hard bifurcation and soft bifurcation
first, hard bifurcation: goodbye, never see again
the BCH we mentioned above belongs to hard bifurcation. Hard bifurcation means that nodes using old software can no longer verify blocks proced with new software nodes. If you want to verify, you can only upgrade. After upgrading, it is equivalent to changing the track and running on another new system. Just like BCH to BTC, BCH is a brand new track (a brand new chain), and the coin on this chain is BCH (bitcoin cash). Then, nodes using BCH system can no longer go to BTC network for transaction verification. Hard bifurcations, generally speaking, mean going their own way. There is no intersection any more< Second, soft bifurcation: getting better to meet again
soft bifurcation is opposite to hard bifurcation. Soft bifurcation means that nodes using the old version can verify the blocks proced by nodes using the new version, and nodes using the new version can also verify the blocks proced by nodes using the old version. The two versions are compatible
the way bitcoin upgraded its isolation witness in 2017 is soft bifurcation. In the whole process, it doesn't matter whether we use the old version or the new version, because they are compatible. The new version only solves some problems better. In essence, we are still running on the bitcoin chain, and there is no new coin
to sum up, the difference between soft fork and hard fork is whether nodes using old software can be compatible with nodes using new software. Compatibility is soft fork, while incompatibility is hard fork.
9. Blockchain
the underlying development can't be realized with Java
the upper development only needs to dock according to the given open source interface, and then develop what you need with the language you are good at
now there are many blockchain system templates, you can go to see which development cases are there
the underlying development can't be realized with Java
the upper development only needs to dock according to the given open source interface, and then develop what you need with the language you are good at
now there are many blockchain system templates, you can go to see which development cases are there
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