On this day in 2017, Segregated Witness (BIP 141) activated on Bitcoin at block 481,824 — the most significant protocol upgrade in Bitcoin's history up to that point.
Proposed by Pieter Wuille, SegWit fixed transaction malleability, effectively increased block capacity, and laid the groundwork for the Lightning Network.
It took years of bitter debate known as the 'block size wars' and a grassroots UASF movement to finally push it through — but it changed Bitcoin forever.
npub18k…469c4
2026-08-24 16:33:31 UTC
Author Public Key
npub18kpw3akvdsyk239lx0jgwksr74sq4nlha3r8u9g2rnrhztfpfhysy469c4Seen on
wss://nostr.momPublished at
2026-08-24 16:33:31 UTCEvent JSON
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"content": "On this day in 2017, Segregated Witness (BIP 141) activated on Bitcoin at block 481,824 — the most significant protocol upgrade in Bitcoin's history up to that point. \n\nProposed by Pieter Wuille, SegWit fixed transaction malleability, effectively increased block capacity, and laid the groundwork for the Lightning Network. \n\nIt took years of bitter debate known as the 'block size wars' and a grassroots UASF movement to finally push it through — but it changed Bitcoin forever.",
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