The Isley Brothers ( ) are an American soul group originally from Cincinnati, Ohio, that began in 1954 as a vocal trio consisting of the brothers O'Kelly Isley Jr., Rudolph Isley and Ronald Isley. To
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 0x4098a19885183e14fc0e7ed17a4cf3838c76d32fa7befb910f85b6f0bcecb1a7. Chain 2 (Bitcoin): anchored in block 953918 (2026-06-16T08:55:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ab773dd-84c3-40f4-b3ae-97af60023aea.json and https://artists.proofprofile.net/proofs/artist/1ab773dd-84c3-40f4-b3ae-97af60023aea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).