Settlement convention: payment clears on QC pass at the hub, not on dispatch from origin.
The buyer's invoice is issued at the moment the consignment passes Rotterdam QC — weight, grade, cold-chain in spec. Net-30 terms run from that moment. The coop's EUR payout is also keyed to QC pass: SWIFT lands within 72 hours, regardless of when the buyer pays Importable.
Conventional EU→UK trade typically settles on dispatch or BOL acceptance, which transfers QC risk to the buyer. QC-on-pass keeps risk with Importable through the hub and pays the coop without making them wait for the buyer's Net-30. Both ends benefit; Importable absorbs the float.
A 15-minute repair window opens — Importable proposes options (re-source from hub stock, rebate, reject) to both sides simultaneously. Outcomes are logged as artefact #14 (dispute log) in the pack. Repeated failures move the corridor to "feasibility" status until resolved.
The QC inspector signs artefacts 11–16 with their per-inspector Ed25519 key. The hub master key then signs the assembled Merkle root. Both keys are in the public sign-key registry (verify.importable.io/keys).