lightning-preapprovekeysend – Ask the HSM to preapprove a keysend payment (low-level)¶
preapprovekeysend destination payment_hash amount_msat
The preapprovekeysend RPC command submits the destination, payment_hash, and amount_msat parameters to the HSM to check that they are approved as a keysend payment.
destination is a 33 byte, hex-encoded, node ID of the node that the payment should go to.
payment_hash is the unique identifier of a payment.
amount_msat is the amount to send in millisatoshi precision; it can
be a whole number, or a whole number with suffix
sat, or a
three decimal point number with suffix
sat, or an 1 to 11 decimal
point number suffixed by
Generally the preapprovekeysend request does not need to be made explicitly, it is automatically generated as part of a keysend request.
By default, the HSM will approve all preapprovekeysend requests.
If a remote signer is being used it might decline an preapprovekeysend request because it would exceed velocity controls, is not covered by allowlist controls, was declined manually, or other reasons.
If a remote signer declines a preapprovekeysend request a subsequent attempt to pay the keysend anyway will fail; the signer will refuse to sign the commitment.
On success, an empty object is returned.
Main web site: https://github.com/ElementsProject/lightning