The Downward Spiral is the second studio album by the American industrial rock band Nine Inch Nails, fronted by Trent Reznor. It was released on March 8, 1994, by Nothing Records and Interscope Record
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 0x36c0b74299120a909635954422bb203d13160803b1d0ea038d2d78223052a6fe. 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/5ffca25d-ab74-4f47-9778-40c5b546157d.json and https://artists.proofprofile.net/proofs/artist/5ffca25d-ab74-4f47-9778-40c5b546157d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).