John Graham "Mitch" Mitchell (9 July 194612 November 2008)In his book about the Experience, Mitchell states he celebrated his 21st birthday while on tour on 9 July 1967, which makes his birth year 194
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 0x2bbbb6008e6aa7066db2f295413151456a416d43c00bb93d5d2a45a884c90e51. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ac9460f-2265-4644-84ec-9310df4ddaea.json and https://artists.proofprofile.net/proofs/artist/0ac9460f-2265-4644-84ec-9310df4ddaea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).