Lecture Twitter: acne Buterin spoke about the creation of Casper for Ethereum

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2018-08-19 19:30:11

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Lecture Twitter: acne Buterin spoke about the creation of Casper for Ethereum Source:

Acne Buterin published a series of 75 posts on Twitter, which told in detail the story of the development of Casper. The Creator of Ethereum tried to debunk all the myths and guesses about the most important update of cryptocurrency. The story Vitalik told .

the

As the developed Casper

Keep Track of all the stock market it is impossible — so much here of any events. Sometimes difficult to understand even in a project with the scale and ambition of Ethereum. For the Creator of Ethereum, Vitalik Buterin published a short cheat sheet on the history of a startup.

Buterin back to the beginning of January 2014. In the same year the development team has been extended to Vlad Zamfir, who immediately demanded to start developing validators. This is a special node in the network Ethereum, confirming the validity of the extracted block. Although he Zamfir is not often shone in the media, he made an enormous contribution to the development of Casper.

The Next problem faced by Buterin and Zamfir, was the danger of ranged attacks. Ranged attack is very similar to attack 51, but in this case, the hacker begins to build its chain of blocks with much more long-standing point. In other words, it returns at least 60 000 units back in history the true blockchain.

Buterin noted that to avoid this danger, when PoS is quite difficult, as there is no verification of the validity of the blocks by analogy with the Proof of Work. However, the team had the solution.

We realized that We could cope with long-range attacks by introducing new security measures. Customers should login at least once in four months so they could not come back further than this time threshold in the blockchain.

This solution requires greater confidence on the part of the client than with PoW.

It was anathema to supporters of PoW, because you need the blockchain from a trusted source. However, for us, dirty of subjectivity, it was not a big problem. You still require a trusted source that dictates the rules of consensus for a specific blockchain (and don't forget about updates). So the need for trust is not less.

Another noteworthy turning point in the fate of Casper was one difficulty that he Buterin called «unproductive round». Stuck in search of useless ideas, acne is not moved further in the development of the project. Fortunately, Zamfir time pointed at his colleagues.

In his 22 post Buterin tells about the simplified version of the Byzantine generals problem. He notes that Casper should be a solution which can be embedded on top like PoS and PoW. Casper must be resistant to any delay, as in asynchronous networks is almost impossible to come to a consensus.

Followed by a series of tweets where he talks about the fruits of the work with Zemfira. Together, the two developer constantly argue and discuss the decisions and push each other to new ideas.

55 tweet acne returned by June this year. It was then that the Ethereum team, finally, to present an update to Casper the Friendly Finality Gadget (FFG) as smartcontract. Then Buterin several tweets in a row discusses a simplified version of the Byzantine generals problem, Leslie Lamport.

«Sheet» Vitalik ended a few comments Vlad Zamfir, which immediately resulted in a new dispute between the developers of Ethereum. His step Buterin demonstrated the desire «educate» community coins with any questions.

I Hope Ethereum has a great future. To complete the integration of Casper is still far away, so we offer you to pass the time in our .

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