thumb|Donald Johanos (1963) Donald George Johanos (February 10, 1928 – May 29, 2007) was a conductor and music director with the Dallas Symphony Orchestra and the Honolulu Symphony Orchestra. He was r
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 0xdecc0a7dd18bd6238c098696de982eb0e92330100b250593c8aba1c00fde7f71. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4dd0f8c4-2c3b-469d-ae28-ef7426fe7653.json and https://artists.proofprofile.net/proofs/artist/4dd0f8c4-2c3b-469d-ae28-ef7426fe7653.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).