Jack Gilbert (February 18, 1925 – November 13, 2012) was an American poet. Gilbert was acquainted with Jack Spicer and Allen Ginsberg, both prominent figureheads of the Beat Movement, but is not consi
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 0x4a6eb2b8fd94c06edb8e2572f83793fe54a7f33c16f27b71bee60f6e845b2039. Chain 2 (Bitcoin): anchored in block 953928 (2026-06-16T10:21:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d861a42-ab83-43d3-a73f-899883b34a64.json and https://artists.proofprofile.net/proofs/artist/1d861a42-ab83-43d3-a73f-899883b34a64.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).