Eugene Valentino Cherico (April 15, 1935, Buffalo, New York – August 12, 1994, Santa Monica, California) was an American jazz double-bassist. Cherico played drums as a child and played in a special s
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 0xc69f7a027d29f6ecd0dba2d18ef539fd45b8774767b76ddf5366139ef1a60aca. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7b7d89c-cd35-466e-8af7-43b775db2dc1.json and https://artists.proofprofile.net/proofs/artist/c7b7d89c-cd35-466e-8af7-43b775db2dc1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).