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 0x28bad158a306801b132b527fea345bc4a3f928c7f3e68e1308c959380a8c215b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a376a67-308a-4ad1-8db6-2247f3009ed3.json and https://artists.proofprofile.net/proofs/artist/6a376a67-308a-4ad1-8db6-2247f3009ed3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Newborn Sleep Aid - Brown Noise and other Ambience (Loopable Audio for Insomnia, Meditation, and Restless Children)
Dishwashers for Background Sounds and White Noise
Falling Asleep Listening to the Sounds of the Road
Soothing Rapids for Background Sounds and Natural White Noise
Whispering Harmony: A Peaceful White Noise Sanctuary
Crystal Singing Bowl Reflections: Peaceful White Noise and Relaxation
White Noise: Loopable Background Noise for Relaxation, Sleep
Soothing Brown Waves with Pouring Rain - Loopable with No Fade
Hintergrundgeräusche für das Studium, Meditation und Entspannung (Background noise for study, meditation and relaxation)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x48a7d39285e4baf996a8b307de65f62bbbe12dfe5ce956f828b96f66e44f46a0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMHNS1301115.