James Dewitt Yancey (February 7, 1974 – February 10, 2006), better known by the stage names J Dilla and Jay Dee, was an American record producer, rapper, and composer. He emerged from the mid-1990s un
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6fed8551dcc9435dd857e005b20bd9af6f55e548a2f42f1739a9ff7276342a. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba4e20f3-d4c1-4a63-bc62-4ab31a3636a8.json and https://artists.proofprofile.net/proofs/artist/ba4e20f3-d4c1-4a63-bc62-4ab31a3636a8.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.