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 0x5a2f9c82eb4dbca5c8aff2b38d98a4da56113101c4b63c2cea2f1ef47a52d922. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1c55cd8-071c-4d20-a9e6-8ec5bda6598e.json and https://artists.proofprofile.net/proofs/artist/b1c55cd8-071c-4d20-a9e6-8ec5bda6598e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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
Soothing Waterfalls for Calming Background Sounds and Natural White Noise
Vacuum Cleaners for Background Sounds and White Noise
Soothing Streams for Background Sounds and Natural White Noise
Asleep in the Backseat - Listening to Car Engines for Background Sounds and White Noise
Dishwashers for Background Sounds and White Noise
Refrigerators and Generators for Background Sounds and White Noises
Nighttime Tranquility: Gentle Sleep Sounds