Robert Philipp (February 2, 1895 – November 22, 1981) was an American painter influenced by Impressionism and Post-Impressionism, and known for his nudes, still lifes, and portraits of attractive wome
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 0xd5c69ed594ef1a371d224298c827006eca6ffe63ae5c579c4751f5287fc4a27a. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5688621a-5889-4357-9d87-8969d0b0a956.json and https://artists.proofprofile.net/proofs/artist/5688621a-5889-4357-9d87-8969d0b0a956.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).