Roberta Donnay is an American jazz singer, musician, composer, and producer. She has released nine studio albums and shared the stage with such artists as Booker T. Jones, Dr. John, David Grisman, Jo
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 0x46efa94285b856712d182a40ebd829ab5b57069d756828a3feef3fc08d1fcac8. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c7524ab-fb09-4990-a81f-cd9636788121.json and https://artists.proofprofile.net/proofs/artist/9c7524ab-fb09-4990-a81f-cd9636788121.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).