The escrow - Simpuru

Protected payments are locked by the Masumi vested_pay V2 validator, unchanged. Simpuru deployed its own instance of it, parameterised with Simpuru’s arbiter key instead of Masumi’s admins, so disputes can be settled by Simpuru’s arbiter. Addresses and parameters are on Deployment.

What the datum holds

Every lock carries the buyer and seller, the amount, the input_hash and later the result_hash (see Content commitment), four deadlines and a state.

States

State	Meaning
`FundsLocked`	Paid in, waiting for the seller’s result
`ResultSubmitted`	The seller posted a result hash
`RefundRequested`	The buyer asked for a refund before any result
`Disputed`	The buyer disputed a posted result
`WithdrawAuthorized`	The buyer dropped its dispute; the seller can collect at once
`RefundAuthorized`	The seller conceded; the buyer can take the refund now

When the lock is spent, the purchase ends as withdrawn (seller paid) or refunded (buyer paid back).

Who can spend it, and when

Action	Who	When
Post a result	Seller	Before the submit deadline
Collect (withdraw)	Seller	After the unlock time, if a result is posted and not disputed, or at once if the buyer dropped its dispute
Refund	Buyer	After the submit deadline if there is no result, or at once if the seller conceded
Dispute	Buyer	After a result, before the unlock time
Drop a dispute	Buyer	While disputed
Concede (hand the money back)	Seller	Any time the escrow is open, even after the deadlines
Pay out a dispute	Arbiter	After the dispute window closes

The exact times are on Deadlines. After either side acts on an escrow, that side waits a short cooldown before its next action on it: 60 seconds on Simpuru’s deployment (see Deployment).

Who is the seller in the escrow

For a creator’s listing, a Simpuru platform wallet is the escrow’s seller of record: it signs the quote, posts the result and collects. It then pays the creator their share (see Get paid). This keeps creators from having to run anything themselves.