Buy on the marketplace

Before you start

• Supported networks: mainnet.
• Status: Universe implementation.
• Your funding inputs must be confirmed and uncoloured. Spending a coloured output to fund a purchase loses those units.

The lifecycle

1. Read the listing. Record the Atomical ID, the price, and the exact payment script.
2. Reserve. A reservation holds the listing while you prepare. Read the reservation back.
3. Prepare the purchase. The service builds the settlement transaction and returns what you must sign.
4. Sign. With the exact scope the prepare step specifies.
5. Validate signed. The service checks your signed material against the blueprint before anything is broadcast.
6. Broadcast. Only after validation passes.
7. Verify settlement. See verify settlement.

What is validated before broadcast

• The seller still controls the asset, at a stable checkpoint.
• Your funding inputs are confirmed, uncoloured in both the script hash view and location history, and of a supported type.
• The Atomicals blueprint assigns the selected asset cleanly to the buyer output, with no operation, no mixed Atomical ID, and no burn.
• Heights and hashes on both sides are unchanged across the bracket.

Anything else fails closed.

Check before signing

Check	Why
The Atomical ID matches the listing	A ticker or name is not identity
The price is exactly what you agreed	Including any disclosed marketplace fee
Your funding inputs are cardinal	Or you spend an asset to buy one
Every output is visible with script and value	You cannot verify what you cannot see
The signature scope	It must not let outputs change after you sign

If it fails

Failure	Meaning
Reservation expired	Reserve again. The listing may be gone
Stale ownership	The seller moved the asset. Nothing was spent
Mixed collateral	The seller’s output carries more than the asset
Checkpoint drift	The chain moved mid-check. Retry
Validation failed	Do not broadcast. Start again

A failure before broadcast costs nothing.

Fees

The price, the settlement transaction fee, and any disclosed marketplace fee. The flow must show the breakdown before your final confirmation.

Source

Marketplace v1 and transfers and swaps.