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 0xfb5f6d11d1cbcbe4aed8b36d7e8290fb3c35574c56203caffa75520ffa9dc5c3. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dee4acfd-6887-4d0a-8091-847ad9fac34a.json and https://artists.proofprofile.net/proofs/artist/dee4acfd-6887-4d0a-8091-847ad9fac34a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Retaurantito (feat. Los Carnales de Nuevo León)
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 0x6b007179cd4766f289c748aa28058e1cd7f70749a1d8e56605ebe7a16a11ace5. 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/MXB711800023.
Merequetengue de Posada (feat. Hermanos Vega Jr.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7ab55e66668d48d5d259ff1986e54682f4de494a4ab5904abc93f1e8a4420c. 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/MXB711701299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6834ac108500995f6d65974b75e0c46bce74f9df28a5d8a4e7050b7aa731fe45. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXB711701187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f5e147e825afe4e4f715e7d6d90762c270c48384998cc27150f4d03a8c8d8b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXB711800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b1c534c578bd93eef27f7f545ccd9916072d9e97e73606d330e75e7340f587. 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/MXB711800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0366843e5288c9e20a0c8c7ff59fa498add8bfea0879899819906242e2ff52c5. 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/MXB711800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5e1cf658db6cd53bec0631183f14e6546485b20e4a407edbdeea243ca50ddc. 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/MXB711701286.
¿se Va a Hacer o No Se Va a Hacer? - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e7c29cde2ef2210247cc43744f6ff6aedc4c6378a745fe90394330e6c61873. 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/MXB711800005.
La Flaca (feat. La Nueva Generación de Jose Luis Jr.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40cd01ecfa01412423fbd64eb7e609dd6a966c7bf5957b67b9d8666b14ec1d5. 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/MXB711800119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059887bdd23578d78e9b8e4caf4ca4ed59226af496fdaffd16e026a4d3c93c8e. 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/MXB711800120.
La Cumbia Guapachosa (feat. Kikin y Los Astros)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c765c4d40006596350eaae0675d93368afdc289015f62ae6e0af4d46575144. 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/MXB711800121.
El Pájaro Macua (feat. Los Nuevos Federales)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa1a2dfdd5076431cdd1ccfdfc002db2f430b57875e81e22d1c85a9bfb21ff2. 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/MXB711800122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fcf441192db119fa9b3374c3e54066ac34e01563c2ef78d3206417c1b6239a. 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/MXB711800123.
Bella Casualidad (feat. Los Carnales de Nuevo León)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2912c5380e38f237e8d0257b6dfe5c7762133363293e2bc8787648e3cc6e21. 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/MXB711800124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bf7389fbcf9dfa931ce3e2f2dc1fea0ea3addef16d1dc6927fd4c77ab8f6c4. 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/MXB711800125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d0a8fe7306b52efddb0b7564b191b6fcc2a75c8477814bcff167eda0ec5939. 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/MXB711800126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89eea468d5342d321f69cae391e847824e772d85918f268d9618a309aacda9b5. 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/MXB711800127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68a3a837f006c134db81ce5a9dc30494f4251f937f6234dc79fc6f0e26350a9. 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/MXB711800128.
Nomas el Pelo Menea (feat. Los Jilgueros de Linares)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc141814bcdbe94eb7c05f9209005084e9ab5309aa87e9fea11acce585261b0. 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/MXB711701194.
Maldición Gitana (feat. Los Jilgueros de Linares)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2a4b9d565a1b60eed8d1ac72fa1e97584d5580b932208a765bc527e2b1d43d. 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/MXB711701193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5f2a5533e5c8a943b482525ee5400af515d31a7e34159b01c20b9c36522760. 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/MXB711701269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cefe9114b8cff3744a5888078d177738163d37289721d5fd9473223dd6c15ec. 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/MXB711701271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b39c7b30a3c690959d2396801ab19ee88fe8dc057384b5457ce561b9a1cdb7b. 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/MXB711701272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36188a6b24ff6c4c63d60310316eb90d7a0f8ac6e78e85f36bb92796feb66cf9. 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/MXB711701274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947888f9efcb5d5d8ac22d5ba86168ee939e60614289c5c5581b652823e7d63f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/MXB711800194.