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 0x924fc2478023b8ad0cbcb11b6a321e0c27176343704cf7dad88d6f7a301ab3eb. 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/30da08de-a43b-458d-99df-cf9eca689610.json and https://artists.proofprofile.net/proofs/artist/30da08de-a43b-458d-99df-cf9eca689610.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 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 0x4cef9a0aef558a8747017d05ce7ad2f3e93bae22b0999296d8fb63c2b4081a24. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/GBPS85709515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32adc06d2830f9400a95c1308d3025d2ade98a0bc77acdccce240502cf304241. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/GBPS85709520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f2ae7bda4055a2661390be48419e1fa7fe13016214833e0ea7050298ba3ba2. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GBPS85709505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4a3ef720bf61f521ce0cefcb03f7b16fbb04d6f9e766ebd73b87e79ddbe8ff. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/GBPS85709526.
Música Relajante Para Mascotas Tranquilas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a159dd2059027e6ab52f4892d0922d92a30af6b68535f9768fa56e629afd0c. 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/QZ5FN2590933.
Sonidos Calmantes Para Relajar A Las Mascotas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727e53bd70b45829b36cfc20699777db6cec6301289604b5e64929c08d6d7c13. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZ5FN2590942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5749cfadc2fe92121a581c7466a24df9919a9a57a0810ec68a2f7e04c5bda5e3. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZ5FN2590951.
Melodías Tranquilas Para Dormir De Mascotas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63c7f76c140304e68a4fe7508f3873377912b861665516e3f597902aca9ce30. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ5FN2590958.
Tonos Suaves Para El Sueño De Las Mascotas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742479f9da0a0082141d9b1f2420274dcb6ec02a064b51b948ffae8a2f87d6c2. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZ5FN2590966.
Sonidos Relajantes Nocturnos Para Mascotas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e74246c2e36bb3f23ae94312607ee0be3c1032431c41ba0b31a1123fdffed41. 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/QZ5FN2590974.
Melodías Tranquilas Para El Descanso De Las Mascotas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9613a0c4c93015bb90752579f6aabb94e2df1e0194cef00c6f8eb4c85ac807a3. 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/QZ5FN2590982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf473d24c26fc8ec8c54cf5f1b74860cf43070080e56a3cf1e9c10a81bf7ac7. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QZ5FN2590990.
Melodías Relajantes Para Dormir Para Mascotas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1e6a762f3db64e6633e400222223ff199ffee2408d9a795aeba51127addafa. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ5FN2590998.
Sonidos Tranquilos De Las Mascotas Por La Noche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d4114cb642c32dd1af4bd8a36f75a9444db3a37930a57a6cb9cf408aee8df4. 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/QZ5FN2591005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce07c383ab53c8cd87c5d259a50b12b0e5006f8d64b5b6ef1317d442367ba43. 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/QZ5FN2591012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64870ae402ea2285cf22e63b89fd82bb78a0f2ca5818ad4afb89ea68beb64611. 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/QZ5FN2591021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e5536c0656d8f4fe6badf1a9696a2f0dd5142aa643bf4588085f3ffd3f2a6e. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZ5FN2591029.
Melodías Nocturnas Serenas De Las Mascotas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbece1bee84549a96a96937776347dae044c5a845ad10341929f531d7b461d8fb. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZ5FN2591038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f72ae59ac1ea1966f65c4d1f8013d5359f2414f302a9c741b36c026556b5023. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZ5FN2591046.
Música Tranquila Para La Noche De Mascotas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd797168c7397c81c1a685ba04d9b35dac61bb24f979d5669a8496764c8d4a5e1. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZ5FN2591055.
El Sueño De Las Mascotas Calma La Armonía
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf053dc641edeb5ae29b98a448bb71752b33fe5af2a871067dd6d8e8d1a075405. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZ5FN2591063.
Melodías Tranquilas Para Dormir A Tu Mascota
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111c6cac964ffd4f4c31c0dcdf32844342f4a3ebbd473c3018c8c0958e9ddc7d. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZ5FN2591071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469243f1cf32dbac8c38e1caca7c57bd4d3825eec91339bb845921a99c49f7db. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ5FN2591079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5540486c8af8c0f9ba43977d408928bd7abb28a27b3f9416fe82b1be92e09b7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ5FN2591087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc4c10f9b21719e508894d8971d473d629e0fe1ed95e72e2dc08cbd61bd0e79. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBPS85709513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe403181f10d0785071fdea93df941234108e47ac92ce0f783abe5ef427e79f6d. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBPS83912771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f2ae7bda4055a2661390be48419e1fa7fe13016214833e0ea7050298ba3ba2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBPS85709505.