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 0x19f39bbbf5eaa473a7e9305d97078796a85f420571ed540513a8c9f3d3381fd8. 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/bb80bf48-bfc0-4f79-990f-46ddc5f9ae15.json and https://artists.proofprofile.net/proofs/artist/bb80bf48-bfc0-4f79-990f-46ddc5f9ae15.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Clothes Dryer Collection for Rest and Relaxation (Loopable Audio for Insomnia, Meditation, and Restless Children)
Soothing Brown Waves with Clothes Dryer - Loopable with No Fade
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 0x26e4bd46a6cd6326a526d42ed02a78cf64aef284e6ded5b1c43caa2c9a54ac6c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMHNS1301106.
Clothes Dryer Containing Clothes with Metal Buttons
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703945cf700cf7cea962a37d1291c04b4f065f16cb3061148b34e4723f7667c5. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QMHNS1303181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5c43aad2a01ef6b6bdb311190d4bd86a6bd28745eacfddc010de4f50619534. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/QMHNS1303172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e20a07a501b83d7ff18cb028417cb313749199aaeb561773f6446fdbe0e7e5. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QMHNS1303176.
Clothes Dryer Collection – Noise Brown Shushers for Baby Sleep Loopable
Soft Sounds From Clothes Dryer (Loopable)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308b16b78389a1e05bc6245ff893dbe7c9a17c29ef72c3c5b3d9049088fb621f. 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/DEUE12401033.