* [bitcoindev] BIP-119.2: Extensions for Lightning Symmetry
@ 2024-05-06 18:44 jeremy
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From: jeremy @ 2024-05-06 18:44 UTC (permalink / raw)
To: Bitcoin Development Mailing List
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This adds 3 new modes:
- 20 Byte Hash160 CTV
- 21 and 33 Byte CTV where last byte indicates second-to-top stack element
to be included in hash
The extension data is beneficial to Lightning Symmetry applications as they
need data inscribed in a block so that clients may delete old channel
states.
One question to particularly address is if Hash160 is both preimage and
collision resistant in this context, or if 20 bytes will be a security
issue for lightning developers (I'm aware they use Hash160 for other
applications)
see draft BIP here: https://github.com/bitcoin/bips/pull/1587
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2024-05-06 18:44 [bitcoindev] BIP-119.2: Extensions for Lightning Symmetry jeremy
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