Sergio may refer to: Sergio (name), for people with the given name Sergio Sergio (carbonado), the largest rough diamond ever found Sergio, the mascot for the Old Orchard Beach Surge baseball team
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 0x7b37bb9dec0dd5edc952741152d313ff4a448f091fc20a6016f50f9d762af52a. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0494b642-9c84-43ec-bbe8-b6cbc21b09e4.json and https://artists.proofprofile.net/proofs/artist/0494b642-9c84-43ec-bbe8-b6cbc21b09e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).