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 0x8d71a5fb677f012342e8c5ba0cd2c7977bb6e532eee7016587fd3ab0ecffacfb. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6f88dcf-ac83-4678-bf75-c64dc39b20d9.json and https://artists.proofprofile.net/proofs/artist/b6f88dcf-ac83-4678-bf75-c64dc39b20d9.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Children Songs for Ambiance, Meditation, Insomnia, and Restless Children
Dripping Water Rock Soundscapes with Waves, Rain, and Humpback Whales (Seamless Loopable Ambience for Meditation and Rest)
Soothing Waterfalls for Calming Background Sounds and Natural White Noise
Falling Asleep Listening to the Sounds of the Road and the Rain
Shipping Yard Sounds for Background Sound and White Noise
Dishwashers for Background Sounds and White Noise
Factory Sounds for Background and White Noise