I have decided that I would no longer like to be a member of Bitcoin Unlimited. The reason is that I feel Bitcoin Unlimited, as an organization, is too closely associated with the Bitcoin SV community. The event that really decided my opinion is the lawsuit against several people in…

Note (2021–02–01): After the original publication of this article, the Bitcoin Cash network separated into two versions during the November 15, 2020 upgrade. Bitcoin ABC is now developing Avalanche technology for deployment on the eCash network, not for Bitcoin Cash. Abstract: The Avalanche protocol is a robust consensus algorithm, with…

Abstract: This article describes the design of an opcode recently added to the Bitcoin Cash scripting language called “OP_CHECKDATASIG” [1]. This opcode was activated on the Bitcoin Cash network during the recent upgrade. …

There have recently been several articles, interviews and videos related to Bitcoin’s BTC/BCH divide that appeal to superficial aspects of Austrian School economics, arguing that BTC upholds Austrian ideas, and portraying BCH as more Keynesian. These arguments, however, miss the underlying reasons needed to support their position. …

For many years, there has been a recurring argument against on-chain scaling based on the idea that the blockchain is a “database that must store everything, forever”. …

Note: This article was originally published at Yours.org In the last few weeks, several new candidates for Bitcoin Cash’s new difficulty adjustment algorithm have emerged. Some of these proposed algorithms have been incorporated into Kyuupichan’s model [1], which attempts to simulate miners moving hash power based on their economic incentives. …

Note: This article was previously published at Yours.org This article describes the difficulty targeting algorithm proposed for Bitcoin Cash by Kyuupichan (Neil Booth), announced and then updated on the bitcoin-ml mailing list [1, 2], and implemented at https://reviews.bitcoinabc.org/D578 [3]. A previous article described another proposal by Deadalnix [4]. Goals The goals…

Note: This article was originally published at Yours.org The purpose of this article is to describe the difficulty targeting algorithm that has been proposed for Bitcoin Cash by Amaury Sechet (Deadalnix). The algorithm was originally announced on the bitcoin-ml mailing list on Aug 25 2017 [1], and was subsequently implemented…

从比特币成功分裂成两条链（比特币和比特现金）已经快一个月了。硬分叉诞生了比特现金，也为这个新生的货币创建了一些规则，最引人注目的就是移除了阻碍比特币发展的1MB区块大小限制。但是，还部署了其他一些很重要的改变，以便让比特现金可以彻底分裂并与比特币共存。 其中一项额外的更改叫做紧急难度调整（EDA）。部署EDA是一种相对安全且最小的更改，可以在比特现金的算力还很小的时候，通过下调难度值使比特现金可以存活下去。现在，EDA已经部署（到网络），这个决定是合理的。因为分裂后的情况是无法预知的，所以部署一个改变最小的方案让比特现金可以在算力很小的时候存活下去是明智的，但是，如果比特现金迅速得到了大量的算力支持，难度也有可能保持不变。 现在已经进行分裂，我们得到了关于比特现金实际情况的信息。我们现在知道，比特现金目前的算力很小，而我们获得的经验是EDA机制虽然使比特现金得以存活，但是并不是最佳解决方案，因为它导致比特币和比特现金之间的算力摇摆不定。