Pari or PARI may refer to: Places Pari, Estonia, a village in Vastseliina Parish, Võru County, Estonia Pari, Raebareli, a village in Uttar Pradesh, India Pari, Hamadan or Piruz, a village in Hama
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 0x04181a829a69e8bc38acce9759f4763d204433de0d2409a573a39a14228612cd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10a10ce3-c1fc-4567-8846-a378cc5e6687.json and https://artists.proofprofile.net/proofs/artist/10a10ce3-c1fc-4567-8846-a378cc5e6687.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).