thumb|Dominique Girod at Jazz in the Palmengarten 2024 Dominique Girod (born 1975 in Winterthur) is a Swiss composer and bassist. Life and career Girod grew up as son of the pantomime and movement
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 0x18f67032184c6acbb1360f4b7a0c5f32aeaf14e79ceb6ee631dd2ada4ac8db95. Chain 2 (Bitcoin): anchored in block 954048 (2026-06-17T05:00:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41fafe08-1217-4cf0-acac-92949901e445.json and https://artists.proofprofile.net/proofs/artist/41fafe08-1217-4cf0-acac-92949901e445.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).