thumb|Liberty Enlightening the World (known as the Statue of Liberty), by sculptor Frédéric Auguste Bartholdi, was donated to the US by France in 1886 as an artistic personification of liberty. Libert
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 0xa4f2a45fa92d32e7cce327f09972db1b215d6ee640f5c62c1318e98fdc53df87. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d019f3f7-e1fe-4668-8be8-813e32745ca4.json and https://artists.proofprofile.net/proofs/artist/d019f3f7-e1fe-4668-8be8-813e32745ca4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).