Sir Peter Crane (born 18 July 1954) is the current president of the Oak Spring Garden Foundation and senior research scientist in the School of Forestry and Environmental Studies at Yale University.
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 0x5994df2278c8a92eaa4ea1dfb22ac4e7617481c596e44ac7328f65a601bcc6e5. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1adb812e-0cdf-42d9-888c-2bed26e0182e.json and https://artists.proofprofile.net/proofs/artist/1adb812e-0cdf-42d9-888c-2bed26e0182e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).