NUT-20: harden mint quote signature + NUT-04 UUIDv7 quote ids#3
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a1denvalu3 merged 1 commit intoMay 31, 2026
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…7 quote ids Replace the legacy `quote || B_0 || ... || B_(n-1)` mint-quote signature message with a domain-separated, length-framed, amount-committing `msg_to_sign`. This is a breaking change: mints no longer accept the legacy message. The message does not commit the keyset `id`, so a wallet can re-target a rotated keyset without a new signature. - NUT-04: quote ids MUST be a UUIDv7. - NUT-20: define the hardened `msg_to_sign` (replaces the concatenation). - NUT-29: each locked quote is signed independently per NUT-20 over the consolidated outputs; mixed-method batches are rejected. - tests/20-test.md: hardened-message test vector.
robwoodgate
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a1denvalu3
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May 31, 2026
a1denvalu3
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a1denvalu3:fix-nut-29-batch-minting
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Summary
msg_to_signto NUT-20.quoteids MUST be a UUIDv7.Motivation
The legacy message doesn't commit output amounts and has ambiguous field boundaries across keyset curves. We chose a clean breaking change over a versioned migration because locked mint quotes have ~no production use and NUT-29 batch minting isn't fully released yet; wallets handle the transition as needed.