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BIP-375: clarify eligible input restriction in Signer text

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macgyver13
2026-04-01 12:49:44 -04:00
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@@ -177,7 +177,7 @@ All rules must be followed from PSBTv2 for this role. If there are any outputs w
If any input is spending an output with script using Segwit version > 1, the Signer must fail. If any input is spending an output with script using Segwit version > 1, the Signer must fail.
For each output with PSBT_OUT_SP_V0_INFO set, the Signer should: For each output with PSBT_OUT_SP_V0_INFO set, the Signer should:
* Compute and set an ECDH share and DLEQ proof for each input it has the private key for, or set a global ECDH share and DLEQ proof if it has private keys for all eligible inputs. * Compute and set an ECDH share and DLEQ proof for each eligible input it has the private key for, or set a global ECDH share and DLEQ proof if it has private keys for all eligible inputs.
* Verify the DLEQ proofs for all inputs it does not have the private keys for, or the global DLEQ proof if it is set. * Verify the DLEQ proofs for all inputs it does not have the private keys for, or the global DLEQ proof if it is set.
* If all eligible inputs have an ECDH share or the global ECDH share is set, compute and set the PSBT_OUT_SCRIPT. * If all eligible inputs have an ECDH share or the global ECDH share is set, compute and set the PSBT_OUT_SCRIPT.