Philip Cole is a professor in the Department of Biological Chemistry and Molecular Pharmacology at Harvard Medical School. He previously was a professor and director of the Department of Pharmacology
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 0x8f84e5390126f714d74fdf7ae60ffcbec80a881932c6d0b952bd8314f92e9c2c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5960f925-b581-470b-9a8e-53ad6b22e22b.json and https://artists.proofprofile.net/proofs/artist/5960f925-b581-470b-9a8e-53ad6b22e22b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).