signPsbts

signPsbts

Sign multiple PSBTs at once. This method will traverse all inputs that match the current address to sign.

Wallet & Address Type Compatibility

Wallet Type	Model	Address Types Supported
Software Wallet	All	p2wpkh (Native Segwit), p2tr (Taproot)
Hardware Wallet	Pro, Classic1S	p2tr (Taproot)

Method

async function signPsbts(
    psbtHexs: string[],
    options?: {
        autoFinalized?: boolean;
        toSignInputs?: Array<{
            index: number;
            address?: string;
            publicKey?: string;
            sighashTypes?: number[];
            disableTweakSigner?: boolean;
            useTweakedSigner?: boolean;
        }>;
    },
): Promise<string[]>

Parameters

• psbtHexs — required string[] Array of hex strings of PSBTs to sign

• options — optional object

  • autoFinalized — optional boolean Whether to finalize PSBTs after signing, default is true

  • toSignInputs — optional array Specify which inputs to sign

    • index — required number Which input to sign

    • address — optional string Which corresponding private key to use for signing (specify either address or publicKey)

    • publicKey — optional string Which corresponding private key to use for signing (specify either address or publicKey)

    • sighashTypes — optional number[] Optional sighash types

    • disableTweakSigner — optional boolean Default is false. Set true to use original private key when signing Taproot inputs

    • useTweakedSigner — optional boolean Force whether to use tweaked signer; higher priority than disableTweakSigner

Returns

• Promise<string[]> Array of hex strings of signed PSBTs

Example

const provider = (window.$onekey && window.$onekey.btc) || window.unisat;

try {
    const psbtHexs = [
        "70736274ff01007d...",
        "70736274ff01007d..."
    ];

    const signeds = await provider.signPsbts(psbtHexs, {
        autoFinalized: true,
        toSignInputs: [
            {
                index: 0,
                publicKey: "02abc...",
                useTweakedSigner: true
            },
            {
                index: 1,
                address: "bc1p...",
                disableTweakSigner: true
            }
        ]
    });

    console.log(signeds);
} catch (e) {
    console.log(e);
}

Demo