Eugène Bigot (28 February 1888 – 17 July 1965) was a French composer and conductor. Life Bigot was born in Rennes, Brittany. Initially trained as a violinist and later as a violist, he entered the Co
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa271d3aec4f7204de49d4f60188cce4f2b6a8f45a19c42bed4f73f502e6aef. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d40829c-0140-47e8-ad9e-315907aff803.json and https://artists.proofprofile.net/proofs/artist/7d40829c-0140-47e8-ad9e-315907aff803.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).