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 0x82a8512351b95e2836b5b6c3b98a0abb5720fcdd4fa34530f83c1c4d7e659d0d. 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/66c34dcb-bc7c-425f-b1e0-5b1026ad9592.json and https://artists.proofprofile.net/proofs/artist/66c34dcb-bc7c-425f-b1e0-5b1026ad9592.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Air Conditioner Fan Sound (With Music Box)
Air Conditioner Sound, Music Box for Baby
White Noise Air Conditioner (Peaceful Music Box)
Music Box & Refrigerator Sound to Help Your Baby Sleep Vol. 2
White Noise Refrigerator (Peaceful Music Box)
Vacuum & Music Box to Help Your Baby Sleep Vol. 1
Vacuum & Music Box to Help Your Baby Sleep Vol. 2
Vacuum & Music Box to Help Your Baby Sleep Vol. 3
Sleep Dryer Sound, White Noise with Music Box
Lullaby with Hair Dryer Noise for Better Sleep
Underwater Sounds with Music Box Melodies
Soothing Lullabies to Make Bedtime a Breeze with Nature Sounds
Wonderful and Calming Baby Music & Nature Sounds
Baby's Music Box Lullabies - Music and Nature Sounds for Infants
Deep Sleep Music Box & Nature Collection
Lullaby for Babies to Go to Sleep (With Nature Ambient)
Super Relaxing Baby Music, Soft Sleep Nature Sounds
Babies Bedtime Sleeping Music Lullaby (Nature)
Relaxing Baby Music and Nature Noise to Fall Asleep Faster
Soft And Relaxing Baby Lullabies to Make Bedtime Easy with Nature Sounds
Nature & Music Box for the Baby to Relax and Sleep Quickly
Music Box for Babies to Sleep Comfortably
Music Box Lullabies: Soft Children's Music for Bedtime
Calm Sleeping Newborn: Music Box for Infant, Help to Sleep Baby Well