Nihil may refer to: Nihil, concept of Nothingness Law Nihil obstat Nihil novi Books "Nihil", poem by Jean Passerat in 1588 Nihil, an invisible planet whose inhabitants invade the Earth in the 1964 s
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 0x01db0a77ff80374845f4ca93e40433ac4a7c9d549ee7194385e7d6fb2a679965. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d06e4a83-a02f-4c06-b904-c9d0ec5af331.json and https://artists.proofprofile.net/proofs/artist/d06e4a83-a02f-4c06-b904-c9d0ec5af331.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).