Simpatico may refer to: Music Simpatico (D-A-D album), 1997 Simpático (Gary McFarland and Gábor Szabó album), 1996 Simpatico (Suzy Bogguss and Chet Atkins album), 1994 Simpático (The Brian Lynch/
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 0x4dbd728942d7e41eddb6a16905d9c07e9dae0828589b5d826a18a4486a5a6d18. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e37d9363-e010-4dc6-948c-000b2be61fcc.json and https://artists.proofprofile.net/proofs/artist/e37d9363-e010-4dc6-948c-000b2be61fcc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).