Edgar Cruz is an independent classical and fingerstyle guitarist from Oklahoma City. Cruz has recorded 19 CDs in styles ranging from classical to flamenco to pop to jazz. Cruz is perhaps best known fo
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 0x70dc084dd398bff8c32a7b1e14470ec030c1ab8ce279901acce616aa548efe24. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e553cdaa-d05e-4a78-8d91-671785e34f83.json and https://artists.proofprofile.net/proofs/artist/e553cdaa-d05e-4a78-8d91-671785e34f83.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).