> ## Documentation Index
> Fetch the complete documentation index at: https://help.hoseki.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Multisig claims

> Verify a multisig wallet by signing with enough of its keys.

Add a multisig wallet from its **descriptor**, then sign with enough keys to meet its quorum. A 2-of-3 wallet needs 2 keys.

## Why only some devices can sign

Most wallets can't yet sign a message for a multisig address. The standard for that is called BIP-322.

So Prove verifies multisig its own way. Each key signs separately, from its own single-key address. Prove then checks that each key belongs to your multisig wallet.

This works with the devices Prove connects to directly: **Trezor**, **Ledger**, and **COLDCARD**. We're working to add more.

> [!NOTE]
>
> Other keys can sit on any device. You only need enough supported devices to meet your quorum.

## What you need

* Your wallet's descriptor file, or the descriptor text. See [Export a multisig wallet](https://help.hoseki.app/prove/wallet-guides/export-multisig.md).
* Enough supported signing devices to meet your quorum.

Supported script types: `wsh(...)`, `sh(wsh(...))`, and `sh(...)` with `multi` or `sortedmulti`. Mainnet only.

## Add a multisig claim

**1. Upload the descriptor**

Open **Claims** → **Multisig**. Drop your `.txt` or `.json` file, or paste the descriptor and select **Verify Descriptor**.

**2. Name it**

Prove shows the quorum it found, such as "2 of 3". Enter a name. Select **Next**.

**3. Pick a key and device**

Under **Select a Signing Device**, pick Trezor, Ledger, or COLDCARD. Select **Check Now** to confirm the device holds one of the wallet's keys.

**4. Sign**

Sign the message on the device. You see **Key Verified!**

**5. Repeat**

Select **Verify Next Key** until you meet your quorum. Then you see **Claim Verified!**

## Device notes

* **"Not a match"** means the device's key isn't in this descriptor. Check the device, passphrase, and account.
* **"Unusual derivation path"** warnings on the device are normal.
* **Trezor** can't sign for legacy P2SH multisig, or for keys on `m/45'` or custom paths. Use another device for those keys.

> [!TIP]
>
> Delete the descriptor file from your computer when you finish. It reveals every address in your wallet.


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.