Delivery passport
Signed document a wholesaler hands to its buyer for one delivery: the batches involved, their origins and certifications, and the cold-chain span. It carries an Ed25519 envelope that makes it assertable without the buyer having to trust the seller.
Not to be confused with
- Delivery receipt
Counterpart to the delivery passport, signed this time by the buyer: what was actually received, in what condition, and any reservations. That counter-signature is what turns a seller’s claim into a bilateral fact.
Related notions
What the blog says
- Why Opacity Pays
Ronald Coase (Nobel 1991), transaction costs, and what happens to food supply chains when verification stops costing anything: the opacity rent, and its foretold end.
- Why the Orchard Never Gets Planted
Oliver Williamson: asset specificity, the fundamental transformation, the hold-up. The real cost of opacity is not in the disputes — it is in the orchards that are missing.
- Two Honest People Who Fail to Close
A canteen, a market gardener, a deal that was there to be had — and no deal. A 1983 theorem states what no amount of traceability will ever fix.
Where it is implemented
lib/delivery-passport/index.ts