TNS can stand for: Places Tungsten (Cantung) Airport, Tungsten, Northwest Territories, Canada Tao Nan School, a primary school in Singapore , the National Theatre of Strasbourg, France Groups
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 0xcaea419b9ca20d5fb81ff16428f10bb77f02b8abaaa18f10d3d44fc01ed5dcc1. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7ff34d5-21e7-47a9-94a4-6ba6f44eca1d.json and https://artists.proofprofile.net/proofs/artist/a7ff34d5-21e7-47a9-94a4-6ba6f44eca1d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).