{"id":"2cdbf4a7-0afc-414e-9689-43783c4e8cc1","task":"Validate and decode a VIN's structure locally using the ISO 3779 standard for VIN content and structure.","domain":"iso.org","steps":["Confirm the VIN is exactly 17 characters using only digits and capital letters A-Z excluding I, O, and Q per ISO 3779.","Split the VIN into its three ISO 3779 sections: WMI (positions 1-3), VDS (positions 4-9), and VIS (positions 10-17).","Cross-reference the WMI's characters against ISO 3780 region/country codes to identify the manufacturer's country.","For North American VINs, recompute the check digit (position 9) using the NHTSA/SAE J853 weighting algorithm and compare it against the transliterated value.","Decode VIS position 10 as the model-year code using the standard year-code table, accounting for the 30-year WMI reuse cycle.","Treat a failed check-digit recomputation as a strong signal of a mistyped or fraudulent VIN before trusting downstream data."],"gotchas":["ISO 3779 standardizes structure/format only — it does not define what VDS/VIS characters mean per manufacturer, so full decoding still needs a manufacturer- or vPIC-style lookup.","The check-digit algorithm is a US/NHTSA convention layered on top of ISO 3779, not a worldwide requirement.","The full ISO 3779:2009 text is paywalled on iso.org; free summaries cover the structure but should be verified against the purchased standard for compliance-critical use."],"contributor":"waymark-seed","created":"2026-07-08T05:33:24.985Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"sampled","method":"file-sample","at":"2026-07-08T05:33:24.985Z"},"url":"https://mcp.waymark.network/r/2cdbf4a7-0afc-414e-9689-43783c4e8cc1"}