onchain: Document how the expected witness weight for the close tx
This commit is contained in:
parent
7b12d3eb60
commit
5cbd5220d9
15
bitcoin/tx.c
15
bitcoin/tx.c
|
@ -886,12 +886,15 @@ size_t bitcoin_tx_simple_input_weight(bool p2sh)
|
|||
|
||||
size_t bitcoin_tx_2of2_input_witness_weight(void)
|
||||
{
|
||||
/* witness[0] = ""
|
||||
* witness[1] = sig
|
||||
* witness[2] = sig
|
||||
* witness[3] = 2 key key 2 CHECKMULTISIG
|
||||
*/
|
||||
return 1 + (1 + 0) + (1 + 72) + (1 + 72) + (1 + 1 + 33 + 33 + 1 + 1);
|
||||
return 1 + /* Prefix: 4 elements to push on stack */
|
||||
(1 + 0) + /* [0]: witness-marker-and-flag */
|
||||
(1 + 72) + /* [1] Party A signature and length prefix */
|
||||
(1 + 72) + /* [2] Party B signature and length prefix */
|
||||
(1 + 1 + /* [3] length prefix and numpushes (2) */
|
||||
33 + /* pubkey A (missing prefix) */
|
||||
33 + /* pubkey B (missing prefix) */
|
||||
1 + 1 /* num sigs required and checkmultisig */
|
||||
);
|
||||
}
|
||||
|
||||
struct amount_sat change_amount(struct amount_sat excess, u32 feerate_perkw,
|
||||
|
|
Loading…
Reference in New Issue