thumb|200px|Fukawa working as the musician "ROCKETMAN". (2010) , also known as ROCKETMAN, is a Japanese comedian and musician. He belongs to Watanabe Entertainment. On television he generally takes mi
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 0xf2f30f8b79108a0805eab32c67648b1cfbd641a3880c2c22126f0844067ee1d4. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2cf4adb-76e7-46dd-aa05-f6018bc22f4c.json and https://artists.proofprofile.net/proofs/artist/e2cf4adb-76e7-46dd-aa05-f6018bc22f4c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).