NIVO, abbreviated from Night Invisible Varnish Orfordness (or "Night Varnish Orfordness"), was a dark grey-green overall finish applied to British night bomber aircraft in the inter-war period (1918–
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 0xddacc6899c57bdf3011487952d6a0e0ddc617a876b1c8f096898ff1fa090b5d5. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6875390-0ba5-4102-baeb-84b2dce10fee.json and https://artists.proofprofile.net/proofs/artist/b6875390-0ba5-4102-baeb-84b2dce10fee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).