Yellow Network Demo

Co-Sign Checkout

Business-friendly shared checkout where two people must agree before purchases are applied.

Two shoppers in two browsers can co-approve purchases with equal weight (50/50). Under the hood this uses secure off-chain ledgers, but you can think of it as a shared wallet with approvals.

Wallet not connected

Sepolia network required

Connect your wallet on Sepolia to begin.

How To Use

Quick guided flow for first-time users. You can move through each step manually or wait for auto-slide.

Step 1 of 6

Extension or mobile

Connect Wallet

Connect your wallet on Sepolia. You can use MetaMask extension or MetaMask mobile.

Smoother Approvals

Enable this once to reduce repeated approval popups during active checkout.

Want fewer popups after checkout starts? Turn this on once, then keep decisions moving.

Wallet mode: standard confirmations

Start Shared Checkout first, then enable smoother approvals for that checkout.

Create Shared Cart

Create a shared cart between two wallet addresses.

Invite one teammate to co-sign checkout approvals.

Your Shared Carts

All shared carts where your wallet participates.
0 total

No shared carts yet.

Sessions With Friends

Aggregated open and closed Co-Sign sessions grouped by counterparty wallet.

No app sessions yet.

Shared Cart Workspace

Main area for shopper approvals, cart actions, and checkout lifecycle.

Select a shared cart to begin.

Activity Feed

Chronological feed of cart actions, approvals, and applied decisions.

No events yet.

Shared Wallet

Add funds, move funds back to your wallet, and send money to your friend.

These actions work even when no shared cart is active.

Wallet Balances

How much of each currency is currently available in your shared wallet.

No balances.

Wallet Connections

Background payment links used to move funds quickly during shared checkout.

No channels.

Recent Wallet Activity

Recent incoming and outgoing money movements with timestamps.

No recent wallet activity found.

Developer Console

Advanced compat API controls for debugging, diagnostics, and raw JSON inspection.