02 / THE MECHANISM
The two wallets do not need to be online together. Wallet A opens a wallet-gated request, and Wallet B completes it later from the designated address.
Wallet A enters the exact Wallet B address, pays one side fee, and creates an onchain invitation valid for 24 hours.
The payment remains protected as a pending deposit. Wallet A can revoke an unanswered invitation and recover that exact deposit.
Wallet B opens the link and sees Wallet A, both payment states, the exact side fee, and the invitation status.
A different wallet can see a leaked link but cannot accept it. The contract checks the connected address, not the website alone.
Wallet B pays the second side fee. The same transaction completes the pair and mints both tokens atomically.
One NFT goes to Wallet A and one NFT goes to Wallet B. There is no separate third mint transaction.
Both token IDs resolve to the same pair record. Anyone can inspect the contract to confirm which tokens were created together.
Later transfers change the current owners only. They do not rewrite the paired origin recorded during mint.
CONTINUE THROUGH THE COSIGN FIELD GUIDE.