Oken is a surname. Notable people with the surname include: Lorenz Oken (originally Okenfuß) (1779–1851), German naturalist, botanist, biologist, and ornithologist 46563 Oken, a main-belt asteroid Ok
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 0xb3a437faf6dc6db1abea5be54d934fe3f71c98ba56b17b4cbf6cf667cc0ee217. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2fbf97a-1718-4c57-b9fd-3a57558ff5f8.json and https://artists.proofprofile.net/proofs/artist/e2fbf97a-1718-4c57-b9fd-3a57558ff5f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).