YTY or yty may refer to: YTY, the IATA code for Yangzhou Taizhou International Airport, Jiangsu Province, China yty, the ISO 639-3 code for Yatay language, Queensland, Australia
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 0xc4343eda933b69eab70ab7f0f818a9b4a32b2fb46c060245c3840110a8c20da8. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c20035f-440c-426d-b454-484fc49666f8.json and https://artists.proofprofile.net/proofs/artist/9c20035f-440c-426d-b454-484fc49666f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).