Nada may refer to: Culture Nāda, a concept in ancient Indian metaphysics Places Nada, Hainan, China Nada, Kentucky, an unincorporated community in the United States Nada, Nepal, village in Achham Di
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 0x5ec020ee713af3e95fb0d6b624a6ce1871e33651459c5cb8008713b03bd9b54c. 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/a252aded-5994-4cad-b415-63b8efc67f33.json and https://artists.proofprofile.net/proofs/artist/a252aded-5994-4cad-b415-63b8efc67f33.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).