Onar may refer to: Ónar, in Norse mythology Onar, Ardabil, a town in Iran ONAR, a Greek musical group Onar (rapper), a Polish rapper People with the name Orhan Onar (1923–2009), Turkish judg
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 0x94e85657c4ec0c3f70eab145796aa7ced388c99141cc9cbb49b02762684b60bf. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ecff550d-0749-43ea-a232-fdd5fb2c8d8a.json and https://artists.proofprofile.net/proofs/artist/ecff550d-0749-43ea-a232-fdd5fb2c8d8a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).