NSCR may refer to: EV12 North Sea Cycle Route, a long-distance cycling route North–South Commuter Railway, an urban rail line in Luzon, Philippines Netherlands Institute for the Study of Crime and La
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 0xb45b97b84dcacf0c0ca47e395107c1320d78ee47a9b9b4d2ac07a0d01b8ab79c. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d8cd1b94-05e6-41b8-98fd-8cc47661afd3.json and https://artists.proofprofile.net/proofs/artist/d8cd1b94-05e6-41b8-98fd-8cc47661afd3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).