thumb|right|Socrates, his two Wives, and Alcibiades. Painting by Reyer van Blommendael Myrto (; ; fl. 5th century BC) was a descendant of the Athenian politician Aristides and, according to some accou
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 0xb2c3b1d62085e89df704aff2417c51004588c340194903a1635f845b9476b26b. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e761c5c-ad03-42fa-8937-1f0fdec5ea3e.json and https://artists.proofprofile.net/proofs/artist/7e761c5c-ad03-42fa-8937-1f0fdec5ea3e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).