Leigh Howard Stevens (born March 9, 1953, in Orange, New JerseyFruchter, Rena. Music; Playing and Manufacturing the Marimba", The New York Times, March 26, 1995. Accessed August 3, 2019. "Born in Oran
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 0xf9803844e76dbdd1f1bf9f98e99f66e5a3947ea6be77de8a2d246803fb9713a2. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8443ea16-91b8-46fb-8d4b-a6cb199d59d8.json and https://artists.proofprofile.net/proofs/artist/8443ea16-91b8-46fb-8d4b-a6cb199d59d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).