Certify a multisig wallet

1. Make the signing file

Paste the wallet's output descriptor (most multisig wallets export it as an "output descriptor" or "wallet configuration"; in Sparrow it's in the wallet's Settings tab under Export). It only holds public keys, it stays in this browser and it's never sent to us.

Make the signing file

2. Each key-holder signs it

Open the file in your wallet (Sparrow: File → Open Transaction → From File) and sign with your key or hardware wallet, as you would a payment. It isn't a real transaction: it spends nothing, sends nothing and can't be broadcast. Then save the signed file and upload it here. Each key-holder can upload their own, or one person can upload the file once everyone has signed.

Add these signatures

Sign as one of the key-holders

Enough key-holders have signed

Now the company's details and payment. After payment the company is checked against its registry and its key people verify their identities.

Continue to payment