I use Electrum with a multisig wallet. I would like to figure out how to prove ownership of a "coin".

I understand that I need to share the whole redeem script so that it's hash can be verified against the UTXO I want to prove ownership off. And then I need to sign a message using at least N of M (as defined when creating the multisig wallets) private keys corresponding to the public keys in the redeem script.

My question is how can I display the redeem script in Electrum, in a human readable way that allows to clearly identify N, M and all of the public keys?

How can I display the data structure encoding the redeem script on the blockchain, whose hash constitutes the ps2h address (without spending the UTXO)?

  • Good question. For the future, i hope wallets will implement lifting Bitcoin Scripts to Miniscript policy: they allow a more natural sight over spending condition (see bitcoin.sipa.be/miniscript) . In the meanwhile i don't have an answer to your question but i think the title should be "how to display the redeemScript on Electrum", feel free to revert the EDIT if i'm wrong! – darosior Dec 28 '20 at 10:32
  • I understand. But I'm willing to accept answers that involve using external tools other than Electrum, as long as it is reasonably achievable by a non-programmer. For instance if Electrum can somehow display the redeem script in a binary/hex format, and there is an external tool to decode it, I'm interested. – PiRK Dec 28 '20 at 10:38

I did not find a good answer, so I coded a small GUI to perform signatures using private keys, verify a signature using a public key (or an address) and verify a p2sh M-of-N multisig script against a list of N public keys and the parameter M.

This information is easy to find with a simple right click on an address in Electrum (View Details).


I made it primarily for BCHA, but it works for BTC if you paste a legacy p2sh address instead of a CashAddr.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.