---
title: "Simplest multisig · Bitsaga Insights"
description: "Trivium is a 2 of 3 bitcoin multisig wallet with no words on screen: three keys, two buttons, Bitcoin Core underneath. Try it on signet with the SeedSigner simulator."
url: "https://bitsaga.be/insights/simplest-multisig"
language: "en"
---

> Trivium is a 2 of 3 bitcoin multisig wallet with no words on screen: three keys, two buttons, Bitcoin Core underneath. Try it on signet with the SeedSigner simulator.
[Insights](https://bitsaga.be/insights) · Security

# Simplest multisig

November 10, 2026

![Trivium on a phone shows a QR code and one red dot. Next to it, a SeedSigner reviews a payment of 400,000 test sats.](https://bitsaga.be/images/insights/simplest-multisig-poster.jpg)

> **A 2 of 3 bitcoin wallet with no words on its screens.** Three dots for three keys. One arrow to receive, one to send. Its name is Trivium.

## Three keys

Each SeedSigner shows its public key as a QR code. Tap a dot and scan it.

![Trivium: three colored dots, the first one filled.](https://bitsaga.be/images/insights/simplest-multisig/trivium-key.png)

![SeedSigner shows its public key as a QR code.](https://bitsaga.be/images/insights/simplest-multisig/seedsigner-key.png)

## One backup

After the third key, Trivium shows the descriptor. Save it. A SeedSigner loads it to check the change.

![Trivium shows the descriptor as one QR code.](https://bitsaga.be/images/insights/simplest-multisig/trivium-backup.png)

![SeedSigner: descriptor loaded, policy 2 of 3, three signing keys.](https://bitsaga.be/images/insights/simplest-multisig/seedsigner-descriptor.png)

## Receive

↓ shows the next address. A used address never comes back.

![Trivium shows an address as a QR code.](https://bitsaga.be/images/insights/simplest-multisig/trivium-receive.png)

![Trivium: a balance of 2,000,000 sats and two arrows.](https://bitsaga.be/images/insights/simplest-multisig/trivium-balance.png)

## Send

↑ scans an address. Type the amount in sats. Two signers approve on their own screens, and each one lights its dot.

![Trivium shows the payment as a QR code, with the red dot lit after the first signature.](https://bitsaga.be/images/insights/simplest-multisig/trivium-signature.png)

![SeedSigner reviews the payment: 400,000 test sats to one address, a fee and change.](https://bitsaga.be/images/insights/simplest-multisig/seedsigner-review.png)

![Trivium after the payment: a balance of 1,599,799 sats.](https://bitsaga.be/images/insights/simplest-multisig/trivium-sent.png)

![SeedSigner asks to approve the transaction.](https://bitsaga.be/images/insights/simplest-multisig/seedsigner-approve.png)

## How it works

- Bitcoin Core finds the coins and builds the payment. Trivium only moves QR codes.

- No account and no server wallet. The link is the wallet.

- Under 200 lines of code.

## Why Trivium

Latin for three roads, and the root of the word trivial. Also a cipher from KU Leuven.

## Try it

On signet, our test network: [trivium.bitsaga.be/?signet](https://trivium.bitsaga.be/?signet). Load three seeds in the [SeedSigner simulator](https://bitsaga.be/seedsigner-simulator/wallet.html). Mainnet comes next.