In the unfolding lawsuit between the Crypto Open Patent Alliance (COPA) and Craig Wright, three key witnesses who had early interactions with Bitcoin’s creator, Satoshi Nakamoto, provided their testimonies. Among them were early Bitcoin developers Martti Malmi and Mike Hearn, as well as Adam Back, the creator of Hashcash, the proof-of-work (PoW) algorithm integral to […]
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How did Taproot increase the expressiveness of Bitcoin Script without changing the VM?
Taproot is often described as making Bitcoin “more programmable”. However, Bitcoin still executes the same stack-based Script VM, without loops...









