Malcolm Catto is an English drummer and record producer. He is the co-founder and producer of the English psychedelic/jazz/experimental music group The Heliocentrics. They have so far released four of
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 0x954d347a8438b7219363fa4fc9534981bb7111c820b551fc8c341fba9aa822d4. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eef431ae-6d6b-41e3-b2d9-c1cbc3c3c5f2.json and https://artists.proofprofile.net/proofs/artist/eef431ae-6d6b-41e3-b2d9-c1cbc3c3c5f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).