Perse may refer to: Perse (mythology) (also Persa or Perseis), an Oceanid and consort of Helios in Greek mythology The Perse School, an independent co-educational school in Cambridge, England Step
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 0x75edf140d0ebdb783fe05fb0ea8c8ddfc83f1af0b6cc743e853791c02b96cb06. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12c8b46a-5b5d-435b-a231-894a512ada4f.json and https://artists.proofprofile.net/proofs/artist/12c8b46a-5b5d-435b-a231-894a512ada4f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).