Look at this address and anwser this question

[Jason Brendon]

19iAvuzfb8uH2SZLYcbb5wtbBZdn1o3vRm
And look at this tx:
d572c579f8de3c38b1dfab12928312fbe88f3d74a637d21a75b3f6d0510afe3a

there is a unknown sender called 1 of 1 multisig, ‎0.00010000 BTC

what shit is that?

[1714550394]

1714550394

[1714550394]

1714550394

[AbuBhakar]

19iAvuzfb8uH2SZLYcbb5wtbBZdn1o3vRm
And look at this tx:
d572c579f8de3c38b1dfab12928312fbe88f3d74a637d21a75b3f6d0510afe3a

there is a unknown sender called 1 of 1 multisig, ‎0.00010000 BTC

what shit is that?

It’s the format of a multisig Bitcoin wallet address. You can check the definition below of a multisig address and it’s parts. It’s not unknown sender but rather a part of the wallet.

A multisignature address is an address that is associated with more than one private key. The simplest type is an m-of-n address - it is associated with n private keys, and sending bitcoins from this address requires signatures from at least m keys. A multisignature transaction is one that sends funds from a multisignature address.

Source: https://trezor.io/learn/a/what-is-multisig

[ABCbits]

19iAvuzfb8uH2SZLYcbb5wtbBZdn1o3vRm
And look at this tx:
d572c579f8de3c38b1dfab12928312fbe88f3d74a637d21a75b3f6d0510afe3a

there is a unknown sender called 1 of 1 multisig, ‎0.00010000 BTC

what shit is that?

It's old format address called P2MS[1]. If you see unknown, that means your wallet or block explorer missing few feature since you should see address such as "m-67202395617dc6a0a7e4eccba624f331".

[1] https://learnmeabitcoin.com/technical/p2ms

[Jason Brendon]

19iAvuzfb8uH2SZLYcbb5wtbBZdn1o3vRm
And look at this tx:
d572c579f8de3c38b1dfab12928312fbe88f3d74a637d21a75b3f6d0510afe3a

there is a unknown sender called 1 of 1 multisig, ‎0.00010000 BTC

what shit is that?

It's old format address called P2MS[1]. If you see unknown, that means your wallet or block explorer missing few feature since you should see address such as "m-67202395617dc6a0a7e4eccba624f331".

[1] https://learnmeabitcoin.com/technical/p2ms







Ah! Thanks for all that. I think it's fair enough to close this thread.

[NotATether]

It's old format address called P2MS[1]. If you see unknown, that means your wallet or block explorer missing few feature since you should see address such as "m-67202395617dc6a0a7e4eccba624f331".

P2MS doesn't even have an address format, so how could any explorer or wallet label it as such?

It’s the format of a multisig Bitcoin wallet address. You can check the definition below of a multisig address and it’s parts. It’s not unknown sender but rather a part of the wallet.

It's a very limited form of multisig that only allows you to use up to 3 cosigners because the data is not hashed before it is broadcasted, unlike P2SH.


Anyway, I find it very strange that P2MS's BIP was made just 2 months before the P2SH BIP. That's a very short interval where it could've been though out whether the former type was needed.

[nc50lc]

Ah! Thanks for all that. I think it's fair enough to close this thread.

You can close it yourself by using the small "lock topic" button at the lower-left hand side of the page.