Paid only when the car proves delivery.

The buyer locks 0.2 SOL

The money goes into an escrow on Solana. Nobody can touch it yet. create_delivery()
The car drives

Our PiCar-X leaves with the parcel. The payment waits while it moves.
It scans the box

The car’s camera reads the QR code on the box. No code, no payout.
The confirmation is signed

The car signs the delivery on-chain. Anyone can check it in the Solana Explorer. confirm_delivery()
The owner gets paid

The escrow releases the 0.2 SOL to the car’s owner, found through its peaq Machine-NFT. close_escrow()

Machines cannot pay for themselves.

No bank account

A robot cannot open one. It has no passport, no address and no signature.
Cards fit people, not robots

Cards need a person to hold them, approve them and dispute them.
Payment is not proof

Money moving says nothing about whether the parcel arrived.

Money and the real world do not talk to each other. RoboPay makes them.

One code is not enough. So the payout depends on two checks, and the second one closes the gap the first one leaves open.

Working on the car today

Planned, next step

Proves: The car signs the letterbox’s one-time code. A weight sensor confirms the parcel, and the letterbox co-signs.
Can’t stop: A code relayed from far away.

peaq gives every car a verifiable identity, its Machine-NFT. That is how RoboPay finds the owner to pay.

An escrow program with three calls: create_delivery, confirm_delivery, close_escrow.