thumb|right|Silvain Vanot Silvain Vanot (born 1963) is a French singer-songwriter. He has issued seven albums and also composes film music. Egérie (1997).Les inrockuptibles 2002 – - Issues 325–332 –
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 0xdb07ce8f29af9576a7d9c76592027b23c9d798912bbff095756cc7b9de85ddd3. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ae21abf-ed5a-4c6d-accb-ad64b559b2de.json and https://artists.proofprofile.net/proofs/artist/9ae21abf-ed5a-4c6d-accb-ad64b559b2de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).