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 0x219f6e142d1b9f77224037a8e6b96f1ada91606e0cfb7add1cd070497e5e7a80. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1fe90e36-5f10-4b6c-b2f3-41fc15c3fafc.json and https://artists.proofprofile.net/proofs/artist/1fe90e36-5f10-4b6c-b2f3-41fc15c3fafc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brown Noise Spa for Background Sounds and White Noise Therapy
Hair Dryers for Background Sounds and White Noise
Refrigerators and Generators for Background Sounds and White Noises
Vacuum Cleaners for Background Sounds and White Noise
White Noise and White Noise Alternatives for Background Sounds and Deep Sleep
Soothing Showers for Background Sounds and White Noise
Falling Asleep to the Sounds of the Road
Dishwashers for Background Sounds and White Noise
Small Indoor Waterfalls, Rock Gardens, and other Decorative Water Features for Background Sounds
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddbf2383578e07988024f396a6475e504cb79f4cbbc906dfef31c11b724cb8a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE5IB1701122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925d3f72ff188ca40d9706654baef5e0dd8596e195c17c0b9ce2b58ea8d38820. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE5IB1701123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88914184269129e3f504fc369e93c99287e617fb83c2708b6aa69a20eaada869. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5IB2162614.