RTG may refer to: RTG (trainset) (Rame à Turbine à Gaz), a French gas turbine trainset RTG Turboliner, US import of the French trainset Radeon Technologies Group, a division of AMD Radio Télévisi
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8886d72f107e1cc7a675747c00e2ecdf4b30b4c4b32e9ac18ecc140aaff494e0. Chain 2 (Bitcoin): anchored in block 953959 (2026-06-16T14:51:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26b8f2c4-6820-4cc0-8932-2e139a0fc9c7.json and https://artists.proofprofile.net/proofs/artist/26b8f2c4-6820-4cc0-8932-2e139a0fc9c7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).