Fantine () is a fictional character in Victor Hugo's 1862 novel Les Misérables. She is a young grisette in Paris who is impregnated by a rich student. After he abandons her, she is forced to look afte
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 0xc3c401208ba673822e31ab8f3a77cdb0d6b9aa01852b2982eb51e9f8ac6ccae9. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21225ac2-f22d-4191-a5a3-101218026a41.json and https://artists.proofprofile.net/proofs/artist/21225ac2-f22d-4191-a5a3-101218026a41.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).