thumb|250px|right|Lobby card from Ashes (1922). Leona Anderson (born Leona Aronson; April 3, 1885 – December 25, 1973) was an American silent film actress who is possibly best remembered for her 1957
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 0x3b073cbcc2b494aea39d78a1ddb493aa8cf2903af04299d06aeb0f48d71062f3. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec219f94-e900-4517-b13f-eb99d865a5fa.json and https://artists.proofprofile.net/proofs/artist/ec219f94-e900-4517-b13f-eb99d865a5fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).