In Latin America, a booking deposit is a fight waiting to happen: full refund, half, or nothing, and nobody remembers what was agreed. Seña is an agent that settles it with one written rule. It charges the deposit in wARS (Ripio's digital Argentine peso) over x402 and Permit2 on Celo: the customer signs and the facilitator settles. If you have no wARS yet, the payment page opens Ripio's on-ramp with your wallet already filled in. Cancel more than 24 hours ahead and you get everything back; between 24 and 6 hours, half; under 6 hours the deposit stays with the venue, unless the slot is resold, and then you get it back anyway. The agent refunds up to a limit by itself and asks the owner above it. Every paid booking gives the payer's wallet a non-transferable NFT ticket (ERC-721 with ERC-5192), and the same wallet can see and cancel its bookings by signing a free message. Every decision is public, with the rule that applied.
