Add OP_RETURN output
Add input with enhanced validation and metadata
Add output with enhanced validation and metadata
Add standard input
Add BIP32 derivation information to input
Add redeem script for P2SH inputs
Add witness script for P2WSH inputs
Add standard output
Add BIP32 derivation information to output
Clone PSBT
Combine multiple PSBTs
Create enhanced clone with metadata preservation
Extract transaction without finalizing
Get fee amount
Get fee rate (sat/vB)
Get input metadata
Get comprehensive PSBT metadata
Get output metadata
Get underlying PSBT
Check if Replace-by-Fee is enabled Note: RBF should be enabled when adding inputs, not after PSBT creation
Set input non-witness UTXO for legacy inputs
Set input witness UTXO (required for segwit inputs)
Sign PSBT with hardware wallet
Export to base64
Export to buffer
Export to hex
Validate all inputs have signatures
StaticfromStaticfromStaticfrom
Enhanced PSBT Builder with BIP-174 compliance and advanced features