René Dubois (born 30 January 1906, date of death unknown) was a French boxer who competed in the 1924 Summer Olympics. In 1924 he was eliminated in the first round of the welterweight class after los
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 0xaba0e30c11b12178ea4fa12e5388dc84ef84ab5357a093fc483e49c8d229fb63. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1a5e0fc-c1f7-45cb-b48d-74caa666da98.json and https://artists.proofprofile.net/proofs/artist/b1a5e0fc-c1f7-45cb-b48d-74caa666da98.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).