William Garrett Price (November 21, 1896 – April 8, 1979) was an American artist, cartoonist and illustrator. He is notable for cartoons and cover illustrations in The New Yorker and for children's b
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 0x4fd0f07d1186f339e3a745831a828971b2931e5534d2672a251dd3309d2d3f18. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8aa2facc-0179-495f-bb36-b42be91e3303.json and https://artists.proofprofile.net/proofs/artist/8aa2facc-0179-495f-bb36-b42be91e3303.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).