Gladys Alberta Bentley (August 12, 1907 – January 18, 1960) was an American blues singer, pianist, and entertainer during the Harlem Renaissance. Her career skyrocketed when she appeared at Harry Han
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 0x8a52f8a6e2e1bd33fd8439f450b4885a721a510afe76c262e4365273e5657303. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf8f3344-3f1e-4ad7-9e9c-eb391b6b3b0b.json and https://artists.proofprofile.net/proofs/artist/bf8f3344-3f1e-4ad7-9e9c-eb391b6b3b0b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).