Daniel D. Page (March 5, 1790April 29, 1869) was the second mayor of St. Louis, Missouri, United States. Daniel Page was born in Parsonsfield, Maine, in 1790. At the age of fifteen, he moved to Portl
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 0xa1cfa9f1be30b674ade7f1fc4b7d1846b23ed3357eafe0e1551f00a7b1481fc5. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3165a84f-7ab8-4213-a728-676c98271596.json and https://artists.proofprofile.net/proofs/artist/3165a84f-7ab8-4213-a728-676c98271596.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).