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Add opt-in PSBT support for legacy v1 wallet transactions. When `usePsbt: true` is passed to `createTransaction`, the function now returns a PSBT hex in the `transactionHex` field instead of a legacy unsigned transaction hex. Key changes: - Add `buildPsbt` function in transactionBuilder.ts that constructs a PSBT with embedded signing metadata (BIP32 derivation paths, redeem/witness scripts, global xpubs) - Add `createRootWalletKeysFromV1Keychains` helper to convert v1 keychain format to utxo-lib's RootWalletKeys - Update `signTransaction` in wallet.ts to auto-detect PSBT format using `utxolib.bitgo.isPsbt()` and route to appropriate signing - Add comprehensive tests verifying PSBT output matches legacy tx structure The PSBT format embeds all signing metadata directly in the transaction, eliminating the need for a separate `unspents` array. This prepares v1 wallets for gradual migration to PSBT-based signing. Default behavior remains legacy format for backward compatibility. Use `usePsbt: true` to opt-in to PSBT format. TICKET: BTC-2894 TICKET: BTC-2894
Add PSBT transaction building capability for legacy v1 wallets with gradual rollout: - 10% of mainnet transactions use PSBT format - 100% of testnet transactions use PSBT format - Explicit usePsbt: true/false always takes precedence TICKET: BTC-2894
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OttoAllmendinger
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lcovar
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Revert "Merge pull request #7792 from BitGo/BTC-2894-v1.psbt"
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commit: ea36e1b
Add opt-in PSBT support for legacy v1 wallet transactions. When
usePsbt: trueis passed tocreateTransaction, the function nowreturns a PSBT hex in the
transactionHexfield instead of a legacyunsigned transaction hex.
Key changes:
buildPsbtfunction in transactionBuilder.ts that constructsa PSBT with embedded signing metadata (BIP32 derivation paths,
redeem/witness scripts, global xpubs)
createRootWalletKeysFromV1Keychainshelper to convert v1keychain format to utxo-lib's RootWalletKeys
signTransactionin wallet.ts to auto-detect PSBT formatusing
utxolib.bitgo.isPsbt()and route to appropriate signingstructure
The PSBT format embeds all signing metadata directly in the
transaction, eliminating the need for a separate
unspentsarray.This prepares v1 wallets for gradual migration to PSBT-based signing.
Default behavior remains legacy format for backward compatibility.
Use
usePsbt: trueto opt-in to PSBT format.commit: 8d81f4c
Add PSBT transaction building capability for legacy v1 wallets with
gradual rollout:
commit: 8f512a1
Add fallback mechanism for PSBT transactions in the SDK. When PSBT
is requested but fails, automatically retry with legacy transaction
format and record the error details for reporting.