thumb|Lilia in front of Rough Castle on the Antonine Wall in central Scotland. Lilia (Latin plural, meaning "lilies" in English; singular, lilium) are pit traps arranged in a quincunx pattern dug by t
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 0x45c213f415dbcc4330b527690a291830ff3da8222c3ad1b8374e80903b2af2a5. 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/a4747d44-8c55-4bc3-8828-fe2bda9a9f24.json and https://artists.proofprofile.net/proofs/artist/a4747d44-8c55-4bc3-8828-fe2bda9a9f24.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).