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 0xf2140c97f1f79ba49674084bebfd1646807becdd153ec8d73f513cf39ac2b095. 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/9cb17077-4818-4d40-9b1b-501beb927a44.json and https://artists.proofprofile.net/proofs/artist/9cb17077-4818-4d40-9b1b-501beb927a44.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xe077a38eef78a68c053a1ac46e9a3a21f85bb637ab44e1201163a04a7a6ac72c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USQY51775101.
Hair Dryer On High Loopable with No Fade
Smooth Brown Noise: Vacuum Cleaner, Fan & Dryer Sound
Brown Noise: Clothes Dryer With Clothing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea5ad0ee5de793dabd68954697e6c7a0e26c70f21b5efb72851de8f90d38ef1. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CH7811101407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f28b95eb27c0ea9d354695a4fa8ea0843193217c11373b69cc401b840995793. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CH7811101881.
Nice Likable Sleeping Soft Pink and White Noise
Drowsy Noise Melodies for Excellent Sleep All Night and Sweet Dreams
Soothing Brown Noise Clothes Dryer Loopable
Clothes Dryer Full of Clothes - Loopable
Mindless Tumbling Dryer Sound (Loopable)
Blow Dryer Sound on High Power (White Noise)