NS7, NS-7, NS.7, NS 7, or, variation, may refer to: Places Kranji MRT station (station code: NS7), Sungei Kadut, Singapore Hirano Station (Hyōgo), station code: NS07; Kawanishi, Hyōgo Prefecture, J
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3564446bce6104333bab60013c6683c8684ac5d472f4893bef802bb8ec716d13. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0985837-2592-4808-a836-849348074578.json and https://artists.proofprofile.net/proofs/artist/b0985837-2592-4808-a836-849348074578.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).