Cam Tatham, known by his stage name Sleepy Tom, is a Canadian DJ and music producer. He released his first EP The Currency on Fool's Gold Records in March 2013. The music video for lead track, "The Cu
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 0x78cd7e330cc3535e36493a4fd6ce0fa90a6ea19e5e63f242079f3285fb8bf5bc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82f60eb9-5f2e-424e-8e91-1de5d267fa1a.json and https://artists.proofprofile.net/proofs/artist/82f60eb9-5f2e-424e-8e91-1de5d267fa1a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).