George Cromarty (September 15, 1941 – February 12, 1992) was an American folk guitarist and singer. He is best known as the co-writer, with Ed Rush, of the song "Plastic Jesus", though he went on to r
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79216fa6702cdb871648928be2422967d8bbc2ff1bddb826c2cf06ae4e6248b. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b37e3c3a-627f-49f6-8cdc-4ff1a0b595af.json and https://artists.proofprofile.net/proofs/artist/b37e3c3a-627f-49f6-8cdc-4ff1a0b595af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).