P2WSH Multisig and Timelock question - page 2.

NotATether

legendary

Activity: 1568

Merit: 6660

bitcoincleanup.com / bitmixlist.org

In the timelock branch:

Code:

key_C OP_CHECKSIGVERIFY
1
OP_ENDIF
key_A key_B 2 OP_CHECKMULTISIG

You would have to put C's signature in the last cosigner of the output in order for the script to work properly, correct?

Other than that, this script looks well-formed to me.

Quote from: Jason Brendon on March 14, 2023, 01:44:38 AM

taproot? what wallet can send coins from taproot addresses to others?

Sparrow Wallet can do that. I think maybe Bitcoin Core can do that now too, because Ordinals claim to use that feature. And it's always possible to construct Taproot transactions with spend paths by hand if you are sufficiently masochist

Jason Brendon

member

Activity: 162

Merit: 65

Quote from: ?? on ??

Quote from: Jason Brendon on March 13, 2023, 01:39:32 AM

very impressive.
But can people tell all the spend conditions from the blockchain?

For P2WSH and P2SH, everyone will know spend condition/redeem script after the coin has been spent. If you don't want that, consider P2TR instead.

taproot? what wallet can send coins from taproot addresses to others?

Jason Brendon

member

Activity: 162

Merit: 65

very impressive.
But can people tell all the spend conditions from the blockchain?

cedricfung

member

Activity: 87

Merit: 40

For the nSequence value in the miniscript example, it's using relative block number instead of time, that's why it's such a small number.

cedricfung

member

Activity: 87

Merit: 40

Thank you, the bitcoin-cli script ASM is

Code:

OP_IF 2 OP_ELSE 4194311 OP_CHECKSEQUENCEVERIFY OP_DROP key_C OP_CHECKSIGVERIFY 1 OP_ENDIF key_A key_B 2 OP_CHECKMULTISIG

I used the number 2 and 1, not OP_2 or OP_1, as I understand from the tutorial https://github.com/BlockchainCommons/Learning-Bitcoin-from-the-Command-Line/blob/master/10_4_Scripting_a_Multisig.md#create-a-raw-multisig

According to this tutorial https://github.com/BlockchainCommons/Learning-Bitcoin-from-the-Command-Line/blob/master/11_3_Using_CSV_in_Scripts.md#create-a-csv-relative-time

I calculated the relative lock time of 1 hour as below

Code:

nSequence = (1 << 22) | (3600 >> 9)
=> 4194311

But one thing confused me is the miniscript sample https://bitcoin.sipa.be/miniscript/

For 90 days, it uses 12960 in miniscript, and the compiled sequence is a032, that's too small a number.

pooya87

legendary

Activity: 3472

Merit: 10611

Looks correct to me but you can always test things like this on the TestNet to be more sure, specially when it comes to setting the time value in the timelock.
Also what you called "OP_PUSHNUM_2" and "OP_PUSHNUM_1" should be OP_2 and OP_1 respectively with 0x52 and 0x51 as their byte representations.

cedricfung

member

Activity: 87

Merit: 40

I'm working on a wallet solution to use 2/3 multisig with timelock.

A and B can spend the UTXO together before the timelock, but C can only spend the UTXO with A or B after the timelock expires.

So I wrote the script as below, is it correctly implemented as the requirement?

Code:

OP_IF
2
OP_ELSE
4194311 OP_CHECKSEQUENCEVERIFY OP_DROP
key_C OP_CHECKSIGVERIFY
1
OP_ENDIF
key_A key_B 2 OP_CHECKMULTISIG

Thank you

Topic: P2WSH Multisig and Timelock question - page 2. (Read 523 times)