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BIP376: Spending Silent Payment outputs with PSBTs (#2089)

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nymius
2026-04-10 22:06:48 +00:00
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@@ -573,6 +573,28 @@ derived from an aggregate key.
| 2
| [[bip-0375.mediawiki|375]]
|-
| Silent Payment Spend Key BIP 32 Derivation Path
| <tt>PSBT_IN_SP_SPEND_BIP32_DERIVATION = 0x1f</tt>
| <tt><33-byte spend key></tt>
| The 33-byte spend public key used to derive the key locking this input.
| <tt><4-byte fingerprint> <32-bit little endian uint path element>*</tt>
| The master key fingerprint as defined by BIP 32 concatenated with the derivation path of the spend public key. The derivation path is represented as indexed 32-bit unsigned integers concatenated with each other. Input Finalizers should remove this field after <tt>PSBT_IN_FINAL_SCRIPTWITNESS</tt> is constructed.
|
| 0
| 2
| [[bip-0376.mediawiki|376]]
|-
| Silent Payment Tweak
| <tt>PSBT_IN_SP_TWEAK = 0x20</tt>
| None
| No key data
| <tt><32-byte tweak></tt>
| A 32-byte raw tweak. Input Finalizers should remove this field after <tt>PSBT_IN_FINAL_SCRIPTWITNESS</tt> is constructed.
|
| 0
| 2
| [[bip-0376.mediawiki|376]]
|-
| Proprietary Use Type
| <tt>PSBT_IN_PROPRIETARY = 0xFC</tt>
| <tt><compact size uint identifier length> <bytes identifier> <compact size uint subtype> <bytes subkeydata></tt>