はてなブックマーク

zkSNARKs in a nutshellPosted by Christian Reitwiessner on December 5, 2016 The possibilities of zkSNARKs are impressive, you can verify the correctness of computations without having to execute them and you will not even learn what was executed - just that it was done correctly. Unfortunately, most explanations of zkSNARKs resort to hand-waving at some point and thus they remain something "magical

Ethereum scalability research and development subsidy programsPosted by Vitalik Buterin on January 2, 2018 The Ethereum community, key developers and researchers and others have always recognized scalability as perhaps the single most important key technical challenge that needs to be solved in order for blockchain applications to reach mass adoption. Blockchain scalability is difficult primarily

Ethereum and OraclesPosted by Vitalik Buterin on July 22, 2014 One of the more popular proposals for implementing smart contracts differently from the way they are typically presented in Ethereum is through the concept of oracles. Essentially, instead of a long-running contract being run directly on the blockchain, all funds that are intended to go into the contract would instead go into an M-of-N

Security alert [12/19/2016]: Ethereum.org Forums Database CompromisedPosted by Hudson Jameson on December 19, 2016 On December 16, we were made aware that someone had recently gained unauthorized access to a database from forum.ethereum.org. We immediately launched a thorough investigation to determine the origin, nature, and scope of this incident. Here is what we know: The information that was r

Secret Sharing DAOs: The Other Crypto 2.0Posted by Vitalik Buterin on December 26, 2014 The crypto 2.0 industry has been making strong progress in the past year developing blockchain technology, including the formalization and in some cases realization of proof of stake designs like Slasher and DPOS, various forms of scalable blockchain algorithms, blockchains using "leader-free consensus" mechani

Privacy on the BlockchainPosted by Vitalik Buterin on January 15, 2016 Blockchains are a powerful technology, as regular readers of the blog already likely agree. They allow for a large number of interactions to be codified and carried out in a way that greatly increases reliability, removes business and political risks associated with the process being managed by a central entity, and reduces the

On Public and Private BlockchainsPosted by Vitalik Buterin on August 7, 2015 Over the last year the concept of "private blockchains" has become very popular in the broader blockchain technology discussion. Essentially, instead of having a fully public and uncontrolled network and state machine secured by cryptoeconomics (eg. proof of work, proof of stake), it is also possible to create a system wh

DAOs, DACs, DAs and More: An Incomplete Terminology GuidePosted by Vitalik Buterin on May 6, 2014 One of the most popular topics in the digital consensus space (a new term for cryptocurrency 2.0 that I’m beta-testing) is the concept of decentralized autonomous entities. There are now a number of groups rapidly getting involved in the space, including Bitshares (also known as Invictus Innovations)