where are the bitcoin core files that handle P2SH transaction ?
i figure it out.
Topic: Pay to Script Hash (Read 530 times)
i figure it out.
where are the bitcoin core files that handle P2SH transaction ?
Looks like the formatting is a bit shuffled, can't get it clearly.
I try to draw the table row and column line, but i don't know how to draw the line using the post reply formatter.Quote
(from Andreas' book "Mastering Bitcoin"):
The two scripts are combined in two stages. First, the redeem script is checked against the locking script to make sure the hash matches.
I found his book online, the scripting chapter is atThe two scripts are combined in two stages. First, the redeem script is checked against the locking script to make sure the hash matches.
https://github.com/bitcoinbook/bitcoinbook/blob/second_edition/ch07.asciidoc
Looks like the formatting is a bit shuffled, can't get it clearly.
This is what I understand happens on the stack for a multisig P2SH tx (I ignore the 0 at the beginning for the CHECKMULTISIG bug):
So when I want to unlock the tx, I drop Sig1, Sig2 and on the stack. Then the part of the locking script, and it gives:
(from Andreas' book "Mastering Bitcoin"):
The two scripts are combined in two stages. First, the redeem script is checked against the locking script to make sure the hash matches.
Replacing the
And then, if the redeem script hash matches, this will be executed:
OP_2 PK1 PK2 PK3 OP_3 CHECKMULTISIG
oh, the reference is on pages 151ff on the second edition of the book I mentioned.
This is what I understand happens on the stack for a multisig P2SH tx (I ignore the 0 at the beginning for the CHECKMULTISIG bug):
Quote
Redeem Script OP_2 PubKey1 PubKey2 PubKey3 OP_3 CHECKMULTISIG
Locking Script HASH160 <20-byte hash of redeem script> EQUAL
Unlocking Script Sig1 Sig2
Locking Script HASH160 <20-byte hash of redeem script> EQUAL
Unlocking Script Sig1 Sig2
So when I want to unlock the tx, I drop Sig1, Sig2 and
Quote
Sig1
Sig2
HASH160
<20-byte hash of redeem script>
EQUAL
Sig2
HASH160
<20-byte hash of redeem script>
EQUAL
(from Andreas' book "Mastering Bitcoin"):
The two scripts are combined in two stages. First, the redeem script is checked against the locking script to make sure the hash matches.
Replacing the
Quote
OP_2 PubKey1 PubKey2 PubKey3 OP_3 CHECKMULTISIG
HASH160
54c557e07dde5bb6cb791c7a540e0a4796f5e97e
EQUAL
HASH160
54c557e07dde5bb6cb791c7a540e0a4796f5e97e
EQUAL
And then, if the redeem script hash matches, this will be executed:
oh, the reference is on pages 151ff on the second edition of the book I mentioned.
For P2SH, i understand it lets the sender funds a transaction using 20 byte hash. The script supplied to redeem must hash to the scriptHash.
scriptPubKey: OP_HASH160 OP_EQUAL
scriptSig: 0 ...
scriptPubKey: OP_HASH160
scriptSig: 0