thumb|299x299px|Bust of Epicurus. Achieving is an important goal in Epicurean philosophy. In Ancient Greek philosophy, (, from indicating negation or absence and with the abstract noun suffix ),
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b113ee2397e6cfa94e22ec48575ad69de877654eeaaa293dec649a31c0ee625. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a75e9439-bb75-4828-a428-f5d8bde3c478.json and https://artists.proofprofile.net/proofs/artist/a75e9439-bb75-4828-a428-f5d8bde3c478.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).