Not Everyone Wants to Fix Bitcoin's 'Time Warp Attack' – Here's Why

2018-10-13 11:30

A bit of a debate has revved up about bitcoin's "time warp attack" and whether it's an exploit or an unintended advantage.

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It Costs $20 to Launch a 51 percent Attack on Einsteinium and Less than $200 to Force a Hard Fork in Feathercoin

There is this other side of crypto. It’s dark and full of dead coins. It keeps piling up every time ETH or BTC print lower. Though the market is expecting a rally with Ran Neur listing a couple of indicators to justify his bullish stand, Einsteinium coin creators and “community” should be having a hard […] The post It Costs $20 to Launch a 51 percent Attack on Einsteinium and Less than $200 to Force a Hard Fork in Feathercoin appeared first on Ethereum World News.

2018-10-9 14:59


A Guide to 99% Fault Tolerant Consensus

Special thanks to Emin Gun Sirer for review We’ve heard for a long time that it’s possible to achieve consensus with 50% fault tolerance in a synchronous network where messages broadcasted by any honest node are guaranteed to be received by all other honest nodes within some known time period (if an attacker has more than 50%, they can perform a “51% attack”, and there’s an analogue of this for any algorithm of this type).

2018-8-9 04:03


Ôîòî:

Governance, Part 2: Plutocracy Is Still Bad

Coin holder voting, both for governance of technical features, and for more extensive use cases like deciding who runs validator nodes and who receives money from development bounty funds, is unfortunately continuing to be popular, and so it seems worthwhile for me to write another post explaining why I (and Vlad Zamfir and others) do not consider it wise for Ethereum (or really, any base-layer blockchain) to start adopting these kinds of mechanisms in a tightly coupled form in any significant way.

2018-7-21 23:03


STARKs, Part I: Proofs with Polynomials

Special thanks to Eli Ben-Sasson for ongoing help, explanations and review, coming up with some of the examples used in this post, and most crucially of all inventing a lot of this stuff; thanks to Hsiao-wei Wang for reviewing Hopefully many people by now have heard of ZK-SNARKs, the general-purpose succinct zero knowledge proof technology that can be used for all sorts of usecases ranging from verifiable computation to privacy-preserving cryptocurrency.

2018-7-21 23:03


Ôîòî:

‘Roger Ver Will Now Cry’: Stress Testers Start Attack on Bitcoin Cash

BitPico, a group of “Bitcoin developers, miners and whales” which previously stress-tested the Lightning Network, has begun attacking altcoin Bitcoin Cash (BCH). ‘The Bcash attack has been started’ In a series of tweets beginning June 22, the group, whose members’ identities remains unclear, declared that having tested Lightning’s mainnet implementation for rigidity via a coordinated attack, it would do the same to test the BCH network – this time using a 51% attack.

2018-6-26 20:00