TKG can refer to: TKG stands for Tothyo-Kolpo-Golpo, Bengali IT authors' book TKG, the IATA code for Radin Inten II International Airport in Bandar Lampung, Indonesia Tamago kake gohan, a Japanese
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 0x9860dd009ae5a18cc5a9181f60960b437d4b5f1c3c7b09604cea87bef6b3c42d. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8382dfde-65a7-40eb-9f71-baa355f3f050.json and https://artists.proofprofile.net/proofs/artist/8382dfde-65a7-40eb-9f71-baa355f3f050.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).