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 0x99cbc068f27ff725a811ecd11a3039726fd9007ce9f73b3d235d20ea0645d976. 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/898648df-abba-4fa3-b7a9-8f50cbd4a805.json and https://artists.proofprofile.net/proofs/artist/898648df-abba-4fa3-b7a9-8f50cbd4a805.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mix Aniversario: Ni Tuya Ni Mía / Quien No Le Ha Llorado a una Mujer / Por Alguien / Cuando Vivas Conmigo / Rendida a Mis Pies
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 0x6170b81bb2d58f3fded93dcf9a80c02c3d2f463d6292b7bca942bfbaa1c0a853. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM7282066339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a68291e343dfcf2854b23ff72ca21404b9ccb4f80bb41a44e3dc916356820c6. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QM6N21725599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5911a4aaeafcd64bf9945d1d5e9f044c703be43eb85f118eddc6f671b97f12c1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6N21725600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9635b7a36b21ed277a3d04fe8f0298934c7f6ae195aec8bfabcf67c740d7426a. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/QM6N21725601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75fd381c4d56fde506e41a4985244bf6a5fc61ae58ca4465f3a91d89ae861d8. 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/QM6N21725602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68d8dfd86716ddb4dc24fb8b368ba098b15f6f43f66912658824af817c5bea5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM6N21725603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0e13fcd78d730abb467fee0483dc986443bda2bfdbb08c60e2b3aa08b2df98. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM6N21725606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3843715d56a3a7d0b71c66c63dbadf9d36a147da4bd7ca159d3dae953ef2abdf. 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/QM6N21725609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36f2d7c9ab59f960208a591187fbf9d9806bbc01c8a47a1bc64b1cc0852b38d. 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/QM6N21725610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabeafc68cdb2b8ff160812b24b952b7e594344f680685c0edbc5bd0016017062. 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/QM6N21725611.
Mix - Homenaje: El Chivito de Manolo/Los Sabanales
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bfd646f4e0205cc7f0b58641ce3c8f7ed6e3362fd6113d0645670205e9673f. 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/QM6N21725612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b2441cc0b78a278a10475e8596cafdfdda6e4f974e3bb30c0776c97d8d52be. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/QM6N21725604.
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 0x8c0639b94bef60316d617e0efe988d5d534aad7e270dbc683ded9b83105eef94. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QM6N21725605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c760496ef8ebae3c741c95b3a442102da2412f7cd2eea0c615f7bf310a8c37. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QM6N21725607.
Mix - Cumbias: Que Suba el Telón/El Africano (Mami Que Será Lo Que Quiere el Negro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f8c9dc0f1760b8e3981a6780dc06de8c66b86659949404a653693d3b290909. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QM6N21725608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dafe914758c96de56a36015860c2d2c11b500b885fd857e7d477660bcc0dd5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM6MZ2434202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16853e48efecdca1e370f267a1081f3f88149aaf54d38e6ad04be0a26db285f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM6MZ2433638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b8c3139d1940a0ec3bded81d08155ecd57adeba67fbaaaddff096132ac3231. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM6MZ2430897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74737ac197d24a49df8f2228b1d49c2fd1e105c57c2e7d1895f2a6a50fdcb3cb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM4TX2491198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd21b805f34e07f60f434775dc3426c2dde26d7ab950ce3206f5f7b0926aadfa. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM4TW2249588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2df758c0886f2de05c6269b4f36e6680f994a368ccda285ce1998939f72f08. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMFME2192016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ab6f08b2a3f474518329256b65bf79955437f9867b4b32446ca530784327af. 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/QM4TW2137723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1921a7d0222e351116f156d17ca4c92177137899565a7033153a1c403b05d4d2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM4TW2137813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b35ec1abc1bd44853befc12bcdb52261d564fb41ed19cf64c4ff87159af475. 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/QM4TX2103475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71792cf072691159d9f926d81c000388c65bd5c459fdad042e8f6a1fedaa8a6. 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/QM4TW2137754.
MIX - Recuerdos de la Infancia - Amor Te Estuve Esperando / Cara Sucia / Échame a Mí la Culpa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600c669b660b3873a4c3076013f0e4ddf23bbf106e7ffc0d121c82920e1b610f. 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/QM4TW2120848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e409460d7b4d657f8bb8ca770aef404b6b33207fd3881778c40632a336353b2. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/QMFMF2125620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d80ec385101e88532fba835d4dbd879da3a249dfa7b5aad4e9bcf4f7b25a361. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMFMF2024479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbc6153ef7c6ba7217e7076b32486d6776790c3e9b361117ea0b2be72b0874a. 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/QM7282046029.