macgyver13 b217897a62 BIP-375: fix label byte order used by labelhash ...

Test vectors with labels now use big-endian byte order instead of little-endian, matching BIP-352 specification

Summary of test vector changes:
- psbt structure: missing PSBT_OUT_SP_V0_INFO field when PSBT_OUT_SP_V0_LABEL set
- can finalize: one P2WPKH input / two mixed outputs - labeled sp output and BIP 32 change
- can finalize: two sp outputs - output 0 uses label=3 / output 1 uses label=1

2026-04-09 18:07:10 -04:00

130 KiB

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