Creates a new ExactBtcScheme instance.
The Bitcoin signer for client operations
Creates a payment payload for the Exact scheme.
The payload contains a signed PSBT with a single output paying the required amount to the payTo address.
The t402 protocol version
The payment requirements
Promise resolving to a payment payload
Bitcoin client implementation for the Exact payment scheme.
Creates signed PSBTs for on-chain Bitcoin payments that can be finalized and broadcast by a facilitator.