1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x212e9dc4b0fd08bc4f270cef5bd0c92ec7e92180f87b26df11e041bf896df646. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c03ff17b-f4c6-49ef-b268-845144a0f62a.json and https://artists.proofprofile.net/proofs/artist/c03ff17b-f4c6-49ef-b268-845144a0f62a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hair Dryers for Background Sounds and White Noise
Full Volume Hair Dryer on High [Stationary]
Soothing Vacuum Cleaners for Background Sounds and White Noise
Deeper Sounding Vacuum Cleaner [Stationary]
Hand Held Vacuum Cleaner [Non-Stationary]
Messy Floor Vacuum Cleaner [Non-Stationary]
Messy Floors and a Weaker Motor Vacuum Cleaner with a deeper drone [Non-Stationary]
Old Rattly Vacuum Cleaner [Non-Stationary]
Stronger Motor Vacuum Cleaner with high pitched motor tones [Non-Stationary]
Whirly Weak Motor Power Head Vacuum Cleaner [Non-Stationary]
Wide Area Vacuum Cleaner [Non-Stationary]
Dishwashers for Background Sounds and White Noise
Small Indoor Waterfalls, Rock Gardens, and other Decorative Water Features for Background Sounds
Running Water from Spouts, Spickets, and Faucets for Background Sounds and White Noise
Falling Asleep Listening to the Sounds of the Road
Shipping Yard Sounds for Background Sound and White Noise
Seagoing Ship Along Coast with Low-speed Engine
Factory Sounds for Background and White Noise