Marchamo — proof that outlives us

Field notes

Marchamo separates public verification from private operational data: shoppers receive a genuine-or-not answer, while product codes, serials, lots, customers, and volumes are described as encrypted and access-controlled. Its custody model requires both sides of a handover to sign, then closes the chain when a retailer marks an item sold. The example page is explicitly illustrative rather than a live ledger reading. The site says the system remains on a development network and is seeking pilot customers.