T9 may refer to: Military M4 cannon, the 37 mm Automatic Gun, known as the T9 during development M22 Locust, an airborne light tank, known as the T9 during development German torpedo boat T9 Peop
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 0xcaf89c00e85ff8a3898fa9846cf5d8f7876341d306f7f783c2a75cf33beaf436. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43425351-d43f-46b6-8826-dffbc5980ca8.json and https://artists.proofprofile.net/proofs/artist/43425351-d43f-46b6-8826-dffbc5980ca8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
OST "Белка и Стрелка. Лунные приключения 3D"