thumb|Along the Siran River in Baffa Baffa ( Pashto :بفه ) is a town, a union council and capital of Tehsil Baffa Pakhal of Mansehra District in Khyber Pakhtunkhwa, Pakistan. It lies about 15 km nor
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 0x9b17fbd778e7dc43e3b2a4a147f368f172d490d9bb43656363e80dfb2f25b27f. Chain 2 (Bitcoin): anchored in block 954027 (2026-06-17T00:55:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3823e292-8111-4bb2-b475-fe677dd4de56.json and https://artists.proofprofile.net/proofs/artist/3823e292-8111-4bb2-b475-fe677dd4de56.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).