About p2sh addresses?

[davidjjones]

As you know bitcoin adresses start with 3 can be p2sh or p2wsh-p2sh.
Is it possible to find out the script-type of these addresses? or the number of cosingers/signs?

[pooya87]

Not without knowing the redeem script used in these P2SH addresses.
That requires the owner to spent from that address at least once and reveal that redeem script, then it is trivial to look at it and know the details.

[BitMaxz]

I tried many ways to check addresses that start with 3 if it's segwit or not but I couldn't find any tool that can check the address if it's segwit or not.

Except to those addresses that already have spent transactions.

Like this one



I use blockchair.com to check them to do that you need to check that address on the blockchair and look for a sent under history then click the hash, it should show segwit on the right side of transaction status.

Another alternative is to use https://coinb.in/#verify you must copy the raw/hex code of the sent transaction and paste it there. Then if the segwit shows true under the transaction script it means the address is segwit.

[davidjjones]

Not without knowing the redeem script used in these P2SH addresses.
That requires the owner to spent from that address at least once and reveal that redeem script, then it is trivial to look at it and know the details.

I tried many ways to check addresses that start with 3 if it's segwit or not but I couldn't find any tool that can check the address if it's segwit or not.

Except to those addresses that already have spent transactions.

I got it
Thanks for your explains