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 0xb22379755cf6d45cada807b2c3165918412a5e96cb9adf3d5f6b566023ff92d4. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a34ded11-810f-4471-b9ea-30a897a2a233.json and https://artists.proofprofile.net/proofs/artist/a34ded11-810f-4471-b9ea-30a897a2a233.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Entre Gotas y Sueños Relatos de Días Lluviosos
La Melodía Serena, el Sonido Agradable Bajo la Lluvia Intensa
Sonido de Lluvia, Tu Aliado para la Meditación y el Enfoque
Sonido de Lluvia Infinita, Sueño Profundo
Día de Lluvia y Estudio, Tranquilidad Asegurada
Sonidos de Lluvia para Estudiar Tranquilo, Todo el Día Relajado
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 0x4a05ea21283a27d3165e7b302ad3d8ab458e13cc78753c55613c0c9a8c2895d6. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/BGA472420969.
Día Entero de Lluvia, Estudio y Relajación Perfecta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd46f479bd55bc254ee5f69b62f60256afc21a4a541dd3cc2a216c89822d6f11. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/BGA472420970.
Estudiar Tranquilo Con Lluvia, Relajación Todo el Día
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806cd96b2cd1f3d05771f9b3fdaadfb311f1cca58e614d9c79ab75c97035590c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/BGA472420971.
Estudio Productivo Con Lluvia Suave, Relajarse Todo el Día
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3532a6332aa8ca1cdecd59ca2538cba0efacd69cd11b5061eab1f55115fbce80. 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/BGA472420972.
Lluvia Relajante Todo el Día, Ideal para Estudiar Tranquilo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b7491c5367784e57521455ffdf3fcc1d2e71fcf607933a048291c9b2c4af50. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/BGA472420973.
Lluvia Suave Todo el Día, Estudio y Relajación
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15db868fd6f85ab8fafe9b1c760d3d5337ff4dad6323f84d5a5c9b1b4a23ff01. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BGA472420974.
Lluvia y Estudio, Relajación para Todo el Día
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f0c857ee59009d58b9d597c521444a6887abaef5105d615e0f7212ddf2daca. 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/BGA472420975.
Relajación Continua Con Lluvia, Estudio Sin Estrés
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125d9c41916f8b005674443524f801c5da2c54ef58665f0c034bb08fb38f15c1. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BGA472420976.
Relajarse Con el Sonido de la Lluvia Todo el Día, para Estudiar Tranquilo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3869264afc4ade723c0afa522147e448ab8ce7b2ce31d766a1d5c7aea0104238. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/BGA472420977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ef6451948df37b75b7509b6b52067cbf5b996b4852abc1d19674553fd8b795. 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/BGA472420978.