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 0xe60a01b48db9b194fd5149bc023b31e8a3ebf4cc436817bbcccbbad7f9c16c65. 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/f2339662-1881-4a48-8694-0ddeffb8fb56.json and https://artists.proofprofile.net/proofs/artist/f2339662-1881-4a48-8694-0ddeffb8fb56.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
赤ちゃんが泣き止む自然のサウンド
Baby Sleeps With Ambient Sounds of Nature
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 0xb7b299783c4e699df3a5585a1f59d5630c15610fe7f911e854329c37a627af66. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCABB1180165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c7431f9f1e90d7592ac80cc847ed8fa909d50df0d47f755cdfbe996cf56f5b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCABB1180166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63687244de7cf750ed9e7b1886b867600c11722ec898507f8054c34094b36a3d. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCABB1180153.
川の音 - 赤ちゃんが泣き止むサウンド
Appliances and other Household Ambience (Loopable Audio for Ambiance, Meditation, Insomnia, and Restless Children)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab4c838a40e352352e101dad18bf6742fd4da050cbb42da131310f9dbe49c77. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZAKB2012429.
Starlit Serenity: Baby Sleep Under the Sky
Lullaby's Serenade: Soothing Nighttime Tunes for Baby Sleep
Firelight Lullaby: Soothing Baby Sleep Tunes
Lullaby Nights: Soothing Melodies for Baby Sleep
Serene Lullaby: Calm Tunes for Baby Sleep
Jazz Piano's Nighttime Soothe: Music for Baby Sleep
Summer Soothing: Cozy Baby Lullaby Nights
Music for Baby Sleep: Soft Lullaby Tones