Historical retrospective · Bitcoin
BIP 118 explored new signature-hash modes for future protocols
BIP 118 proposes SIGHASH_ANYPREVOUT and related modes that could let a signature commit to a transaction without binding to a specific previous output in the usual way.
The proposal is often discussed in connection with more flexible off-chain contract designs, but its status must be distinguished from activated Bitcoin rules.
It demonstrates how research proposals can shape scaling discussions long before users can rely on them in production.
A proposal is not a deployment commitment; wallet and protocol teams must track formal status and activation separately.
Primary source
This retrospective summarizes the source below in original language. The displayed year refers to the dated event, proposal or specification; it is not the article’s publication date. This is not investment, legal or security advice.