Your testnet account
Create an account with a passkey: your fingerprint, face or screen lock. There is no password and no seed phrase, and Fairmid never sees your passkey. Then send one test transaction; Fairmid pays its network fee. You can also make a test deal, invite the other side with a link, pay into the escrow and finish the deal or settle a dispute, all with test money.
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This page works only at test.fairmid.com/testnet/. Open it there to create a test account.
You are invited to a test deal
If you accept, you are . Test money only.
What you both agree to
The addresses
Anyone can pick a name: the address under their name in “From” is what proves who sent this.
Check that you know this arbiter. The other side chose them, and they never confirm anything. They are contacted only if there is a dispute, and can then give everything to one side. If they never answer, a dispute cannot be decided and you can only . If there is a dispute, you two pay their fee directly, not from the escrow.
These are accounts on the Base Sepolia test network. Never send real money or real crypto to them on any network.
Create your test account or sign in below first.
You are asked to decide a test deal
The buyer and the seller of this test deal disagree, and they named you as their arbiter. Read what they agreed and what they wrote below, ask both of them what happened, then give everything to one side. You cannot split it. The buyer and the seller pay your fee to you directly, not from the escrow. Test money only.
These are accounts on the Base Sepolia test network. Never send real money or real crypto to them on any network.
Create your test account
Your device asks for your fingerprint, face or screen lock.
Made one at this address before? Use it on any device that has it.
- Name
- None on this device yet
- Account
- Test USDC
- –
- Added here
Only for the Base Sepolia test network. Never send real money or real crypto to this address on any network: this page cannot move it.
What should others call you?
Your name shows in your deals and invitations, always next to your address. Anyone can pick any free name, so the address is what proves who someone is.
Send a test transaction
It moves no money. It sets up your account on the test network and shows that everything works, from your passkey to the network. Technically, it lets the escrow contract use 0 test USDC.
Create the account first.
Get free test USDC
Circle, the company behind USDC, gives it out free on its faucet page. Once your account is ready, the button below copies your address and opens Circle's faucet: paste it there. Test USDC is worth nothing. Back here, your balance updates; if it still shows 0, wait a moment and reload.
On the faucet, pick Base Sepolia in the network list, not Ethereum Sepolia or another network. Test USDC on another network does not show up here.
Make a test deal
Describe the deal, then send the invitation link to the other side yourself, by chat or email. Nothing is paid yet: the buyer pays into the escrow after the other side accepts.
Create your test account first.
Your invitation link. Whoever has it can accept the deal, so send it only to the other side.
Your test deals
Waiting for you in the escrow:
Money from finished deals stays in the escrow until you withdraw it to your account.
No test deals on this device yet.
The addresses here are accounts on the Base Sepolia test network. Never send real money or real crypto to them on any network.
Shows deals from your other devices too. Asks for your passkey once.
This browser keeps only your account's public details and your test deals with their notes for an arbiter, never your passkey. Forgetting removes both from this device. Your deals stay on our test server and in the escrow and come back with "Check for updates"; an open invitation link cannot be shown again, so cancel that deal and make a new one. If you forget the account here or clear your browsing data, sign in again with the same passkey. It holds only test money.