Dennis Emmanuel Brown CD (1 February 1957 – 1 July 1999) was a Jamaican reggae singer. During his prolific career, which began in the late 1960s when he was aged eleven, he recorded more than 75 album
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 0xe8a73d6d668ee73a0e09720d6c8a670ee06eb334cf44ad124e169545fe3e3a91. 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/e3bc41a2-0d44-49d8-988e-a16c470de813.json and https://artists.proofprofile.net/proofs/artist/e3bc41a2-0d44-49d8-988e-a16c470de813.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).