STG may refer to: Arts and entertainment Star Trek Generations, a 1995 sci-fi film Strike Gunner S.T.G, a 1991 arcade video game Governments Syrian transitional government Military Sonar Technic
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 0x3925e02db2687d34d82a03a90c679f011df0236142518e39a4476273c25762b1. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1578e1de-63b4-498d-b635-b5f1685f27ad.json and https://artists.proofprofile.net/proofs/artist/1578e1de-63b4-498d-b635-b5f1685f27ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).