The Mexican Association of Marketing Research and Public Opinion Agencies () (AMAI) is the agency responsible for maintaining the transparency and quality in market research in Mexico, setting the sta
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3cb86735dfe0250d713f72cf27faaf50cfd08741993f2a090136bef38318cf. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f2a64c6-2720-47c8-8a4d-23141ae46234.json and https://artists.proofprofile.net/proofs/artist/4f2a64c6-2720-47c8-8a4d-23141ae46234.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).