Tobia or Tobía may refer to: Tobia (name), list of people with the name Tobia, Estonia, village in Rakvere Parish, Lääne-Viru County, Estonia Baños de Río Tobía, manucipality in Spain Tobía, vil
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 0x326a2e578c8fe36ad1aa60b890a7a362c9e56c84030c6101db9f483bb984e8b8. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9789648-1bf0-4da0-bd09-743410a5f0b4.json and https://artists.proofprofile.net/proofs/artist/c9789648-1bf0-4da0-bd09-743410a5f0b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).