Bad Witch is the ninth studio album by the American industrial rock band Nine Inch Nails, released by The Null Corporation and Capitol Records on June 22, 2018. It is the last of a trilogy of releases
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 0xa7a1de8e92ddd667291f846c0403ee68057a6bf1b682a61a8e3d70630b7b01ee. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7075c6fa-5f34-4b9d-8fdd-7787d6c55572.json and https://artists.proofprofile.net/proofs/artist/7075c6fa-5f34-4b9d-8fdd-7787d6c55572.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).