TMC may stand for: Companies and brands Thinking Machines Corporation, a defunct supercomputer company Toyota Motor Corporation, a Japanese automobile manufacturer Toshiba Memory Corporation Trans M
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 0x4d8e03697fff95a1fc2f16f914fa258e32a34d0ffc8cadbf120b492a3497a0be. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22fcdae3-f71e-459a-884e-eb47e1e6234a.json and https://artists.proofprofile.net/proofs/artist/22fcdae3-f71e-459a-884e-eb47e1e6234a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).