NRV may refer to: Net realizable value of an asset Norddeutscher Regatta Verein, a German yacht club Not Really Vanished, computer compression algorithm in UPX Nutrient Reference Value, also know
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 0x742517b0755ba1cb9fe09dc46a6d3eea090e52f2c4b3e26d8579f02054d2efa3. Chain 2 (Bitcoin): anchored in block 953962 (2026-06-16T15:03:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27fffdb5-14cc-43a8-9f52-cc68e2fe587d.json and https://artists.proofprofile.net/proofs/artist/27fffdb5-14cc-43a8-9f52-cc68e2fe587d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).