💎SendBtc

Sending BTC requires 2 rounds of communication between wallet and bittapd, because bittapd needs end users to sign only once.

Step1: TransferBtc

Wallet calls this to transfer BTC to a specific address. Psbt is returned for the end user's sign.

Step 2: PublishTransferBtc

The end user will sign the psbt returned from Step 1, and before call this to broadcast to BTC blockchain, the signed psbt needs to be finalized and extracted.