Andy Nii Akrashie (1983 – 17 August 2023) known professionally as OJ Blaq, was a Ghanaian actor and musician. His first album, The Blaq Mixtape, which came out in 2006, made him famous and got him a l
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 0xa144b838b2fc58d2100dd6bd326e1c9e30e60809bff88e2c7a11863ce38f1899. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d368462f-135e-45c3-8622-a45f2578f79c.json and https://artists.proofprofile.net/proofs/artist/d368462f-135e-45c3-8622-a45f2578f79c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.