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 0xe85cafb110112c954d7db380baff8f2b40a474132a9d3ca3f5b62cd0b160373f. 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/56da4aab-02ca-4bc0-a9b8-ea129d49e4d0.json and https://artists.proofprofile.net/proofs/artist/56da4aab-02ca-4bc0-a9b8-ea129d49e4d0.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 0x79748ee667fd3d791b2bd11ef0726c1c0e6754c02a357ca7468685adf633fc89. 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/MXA231500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc568557c84d8135470e3001a82b2f1403c40a4c4f65c2b14752034993e423bfc. 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/MXA231500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9269b52dafff8ac0996b84dfd33e9b26a2eda050eeb5eb5fd601d3a3e0e4f21f. 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/MXA231500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a84d241d586f1e61214161fb12be02bb1f25b1e0a48054a51fc0b2f3b28593. 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/MXA231500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893e15a914308a01e7ebcba28782275b26b054df22a6af7460a5343283aee12b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:26:02Z), 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/MXA231500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcc3e66fbb202cfc53a6b8af9b444ad28599039886b2108fe9f91a7b8a113e6. 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/MXA231500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97275189d04679d3345db7086adc6468c9df0d5c160bf060557325d5ea51cc3. 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/MXA241500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc833b052ca04d4f99683cad100d6be79dbd95c2374c28903b7d0a6941206e7. 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/MXA241500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87af9ba60df15a876f8c5ece48bb98fd6fc3deb5663bd02b92a38339c47dbc4. 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/MXA241500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d3b9918fc28870c37f7d05c34f3336c46aa648ec5350653d99c5961a10019f. 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/MXA241500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce16defd4228abbbea6623fcc0b826f9896c07bda84c126e3cbab60171d0416. 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/DGA0L2382133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa341944da877bea13605b400f99b1abc870d388b844838defa6d53986acc3934. 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/MXA232100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578aedf4b7b72f1edc6aaf58f207b8595566519526421b89cfd0d5ecdb6d3a79. 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/MXA232000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db714c0ef903faa3452a9ac2f1db5f8a682803cf66d01c40da68c92c02e2a7f. 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/GBLFP1984424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a0ab7ffb133ac2495cfa7474d6f5af7f6d63f0db9f8ec6da8fba1ed9a3e710. 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/MX1881800314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336bbf7f9582686ad6f1836ebd75ac2ad784b4ded5b0d2b8fcb03c68e572cd17. 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/MXA231900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccf2d6144e54bba742490641aa8cf4eeed87184bfad16f05c64f3f1babf044a. 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/MXA231800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220ebf752b2a068d7731d68eef564e62146c04a26e2687b5ac23ebbead65a554. 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/MXA231800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa054316425263475a5e484234e666406c4ab2090e58835b7b9fb0e13dd791724. 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/TCADS1850745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695496a968696a86b496c718dc0ea8484657658288c5b9b2f157d5830b4b4795. 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/MXA231700020.
México Se Pinta de Luz (Only for Streaming)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1042d95173ea71f2e5d1cf32e4750eba7f4bfd7ff000804e23d7cb47b002da33. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MXF011500594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d18177452bfca192b12e3321e8fd82c1c9db5696399a7689a9ec1185741ebce. 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/MXF011500596.