A wefetch standard · free to any conforming implementation. # AI Product Match Verification Version 0.1 · standard-barcodeverified.org “Barcode verified” is an open specification, version 0.1, formally titled “AI Product Match Verification”. It defines what a verified product match is, what evidence it rests on, and what a receipt for one must carry. Any artificial intelligence (AI), retailer or brand may implement it; the words “Barcode verified” are free to any conforming implementation. It answers one question for an AI agent at the moment of purchase: is the product the shopper asked for, the product the merchant is offering, and the product on the verified record, all the same barcode — and how does the agent prove it checked. Connect your agent: https://matchfetch.ai/mcp ## The contract The standard defines a verified product match, the evidence it rests on, and what a receipt for one must carry. Four readings are taken independently from what the record already holds, and one policy rule combines them into one result: verified · listed · stale · unknown. Verified when every identity field was said by its authority, no two sources differ, every field is inside its clock and the brand has claimed its seat; listed when the record holds the product but one of those is missing; stale when a field is past its clock or a refresh failed; unknown when the record does not hold it. Readings: source authority · disagreement · freshness · authorisation. Results: verified · listed · stale · unknown. Barcode never expires; identity, label and claims run on a long clock; price, stock and offer are never verified from the record. ## What the standard does not do It does not certify a product. It does not verify price or stock from a record. It does not establish that a product is orderable. It does not give a legal opinion on a label. “Unknown” is a legitimate result. A failed refresh never leaves a field verified. Artificial intelligence makes mistakes. Every field links the page it was read on. ## Who signs The record key signs content: the product record, every field sourced and dated. The receipt key signs the read: the issuer's receipt door signs that a check happened, under which rules, when. Neither signs the other's object. Every receipt pins both the core version and the market-profile version it was verified under, so the result can be reproduced after the rules change. ## The arrow Ask — the shopper's words, or the merchant's offer line. Answer — what the AI proposes: an observation, not the truth. Barcode — the one identity the words and the offer are bound to, with how sure. Record — the verified record the barcode is checked against: every field sourced and dated. Receipt — the evidence that the check happened, under which rules, when. ## What the standard owns The definition of “verified”, the match-record and receipt formats, the conformance suite, the country-profile schema, and the versions. It does not own any issuer's receipt chain: the receipts are the issuer's. ## Publication discipline One schema, and one sourced record, feed every readout. Country profiles are versioned and superseded, never overwritten. No typed totals in authored prose: generated displays read the record. Shared text is cited, not copied. Every acronym is expanded on first use. A country profile is published only when it has authority rows and the record holds products for that market; until then its host forwards to the mark's home. ## Conformance An implementation runs the conformance suite and, passing, is listed on the keyring as an issuer. The checklist: - Matcher, policy and receipt cases: https://standard-barcodeverified.org/protocol/conformance/ - Five pilot numbers: https://standard-barcodeverified.org/benchmarks/ - Verifier: https://rco-barcodeverified.org/verify/ ## Governance and versions Barcode verified is a wefetch standard. wefetch is a product of GreenCore Solutions Corp. Version 0.1, published 5 November 2026. A new version supersedes the one before it; every version stays published, and every receipt names the version it was verified under. - Governance: /governance/ - Versions: /versions/ - Match record schema: /protocol/match-record.schema.json - Receipt schema: /protocol/receipt.schema.json ## Members Every published country node, by region. ### Europe - uk.barcodeverified.org · United Kingdom - fr.barcodeverified.org · France - de.barcodeverified.org · Germany - es.barcodeverified.org · Spain - it.barcodeverified.org · Italy - ch.barcodeverified.org · Switzerland - nl.barcodeverified.org · Netherlands - pl.barcodeverified.org · Poland - be.barcodeverified.org · Belgium - bg.barcodeverified.org · Bulgaria - cz.barcodeverified.org · Czech Republic - fi.barcodeverified.org · Finland - gr.barcodeverified.org · Greece - hu.barcodeverified.org · Hungary - ie.barcodeverified.org · Ireland - pt.barcodeverified.org · Portugal - rs.barcodeverified.org · Serbia - ru.barcodeverified.org · Russia - sk.barcodeverified.org · Slovakia - se.barcodeverified.org · Sweden - tr.barcodeverified.org · Türkiye - ua.barcodeverified.org · Ukraine - at.barcodeverified.org · Austria - dk.barcodeverified.org · Denmark - ro.barcodeverified.org · Romania - hr.barcodeverified.org · Croatia - si.barcodeverified.org · Slovenia - lv.barcodeverified.org · Latvia - ee.barcodeverified.org · Estonia - lu.barcodeverified.org · Luxembourg - mt.barcodeverified.org · Malta - cy.barcodeverified.org · Cyprus ### Americas - us.barcodeverified.org · United States - ca.barcodeverified.org · Canada - mx.barcodeverified.org · Mexico - br.barcodeverified.org · Brazil - ar.barcodeverified.org · Argentina - bo.barcodeverified.org · Bolivia - cl.barcodeverified.org · Chile - co.barcodeverified.org · Colombia - cu.barcodeverified.org · Cuba - do.barcodeverified.org · Dominican Republic - ec.barcodeverified.org · Ecuador - gt.barcodeverified.org · Guatemala - pa.barcodeverified.org · Panama - pe.barcodeverified.org · Peru - tt.barcodeverified.org · Trinidad and Tobago - uy.barcodeverified.org · Uruguay - ve.barcodeverified.org · Venezuela ### Asia-Pacific - au.barcodeverified.org · Australia - jp.barcodeverified.org · Japan - in.barcodeverified.org · India - id.barcodeverified.org · Indonesia - my.barcodeverified.org · Malaysia - nz.barcodeverified.org · New Zealand - pk.barcodeverified.org · Pakistan - pg.barcodeverified.org · Papua New Guinea - sg.barcodeverified.org · Singapore - kr.barcodeverified.org · South Korea - lk.barcodeverified.org · Sri Lanka - th.barcodeverified.org · Thailand - vn.barcodeverified.org · Vietnam ### Middle East and Africa - dz.barcodeverified.org · Algeria - bh.barcodeverified.org · Bahrain - cm.barcodeverified.org · Cameroon - eg.barcodeverified.org · Egypt - gh.barcodeverified.org · Ghana - ir.barcodeverified.org · Iran - il.barcodeverified.org · Israel - jo.barcodeverified.org · Jordan - lb.barcodeverified.org · Lebanon - ma.barcodeverified.org · Morocco - ng.barcodeverified.org · Nigeria - qa.barcodeverified.org · Qatar - sa.barcodeverified.org · Saudi Arabia - za.barcodeverified.org · South Africa - ae.barcodeverified.org · United Arab Emirates ## Machine surfaces /protocol.json · /nodes.json · /llms.txt · /.well-known/agent-card.json · the country hosts ## Contact Questions about the specification. One form, read by a person. Form: https://formspree.io/f/xaeekvzo (name, email, message, source page) --- © 2027 wefetch, a GSC Company (GSC: https://gsc-em.com) · Powered by gtinfetch.ai · Receipts: https://rco.wefetch.ai/ · The standard: https://standard-barcodeverified.org · privacy · terms · Cookie settings