NIA, Nia, or nia may refer to: Nia (given name), including a list of people and fictional characters Nia (fitness), a type of aerobic exercise Nia (charity), a women's aid organisation based in Lo
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 0xc8eee1a3c65e3ab27f2a2d7dbfb53ea56606153f8aec901a838441e52ce939ca. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/069f6a45-1953-4dd5-b2f0-eec4162886a0.json and https://artists.proofprofile.net/proofs/artist/069f6a45-1953-4dd5-b2f0-eec4162886a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).