Merge pull request #2207 from macgyver13/bip375-labeled-spend

BIP-375: correct labeled test vectors to include labeled-spend key in PSBT_OUT_SP_V0_INFO

bip-0375.mediawiki

@@ -11,7 +11,7 @@
   Assigned: 2025-01-08
   License: BSD-2-Clause
   Discussion: https://groups.google.com/g/bitcoindev/c/5G5wzqUXyk4
-  Version: 0.1.2
+  Version: 0.1.3
   Requires: 352, 370, 374
 </pre>
 
@@ -123,7 +123,7 @@ The new per-output types are defined as follows:
 | None
 | No key data
 | <tt><33 byte scan key> <33 byte spend key></tt>
-| The scan and spend public keys from the silent payments address.
+| The scan and spend public keys from the silent payments address, referred to in this document as a ''silent payment code''. For a labeled address, the spend key is the labeled spend key ''B<sub>m</sub>''.
 |
 | 0
 | 2
@@ -372,7 +372,7 @@ Use the provided [[bip-0375/test_runner.py|test runner]] to validate each test v
 | one input / two sp outputs - output 0 has no label / output 1 uses label=0 convention for sp change
 |-
 | Can Finalize
-| two sp outputs - output 0 uses label=3 / output 1 uses label=1
+| three sp outputs (same scan key) - output 0 uses label=1, outputs 1 and 2 uses label=2 (same spend key)
 |-
 | Can Finalize
 | two inputs using per-input ECDH shares - only eligible inputs contribute shares (P2SH excluded)
@@ -407,6 +407,8 @@ Use the provided [[bip-0375/test_runner.py|test runner]] to validate each test v
 
 == Changelog ==
 
+* '''0.1.3''' (2026-09-29):
+** Correct labeled test vectors and reference: include labeled-spend key in PSBT_OUT_SP_V0_INFO.
 * '''0.1.2''' (2026-09-27):
 ** Validate PSBT_OUT_SP_V0_LABEL is exactly 4 bytes; add invalid test vector for wrong length.
 * '''0.1.1''' (2026-04-16):