__NOTOC__ Year 235 (CCXXXV) was a common year starting on Thursday of the Julian calendar. At the time, it was known as the Year of the Consulship of Severus and Quintianus (or, less frequently, year
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 0xc146a4f94492f9f22e6027f06898992fffd53a29097fa7b134c5e6290aacdd94. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4aa598df-0c3d-407c-823d-890509a6a7c0.json and https://artists.proofprofile.net/proofs/artist/4aa598df-0c3d-407c-823d-890509a6a7c0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).