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 0x0f2b77a14a59bba923b5f64a19fc736dfc24c3749ca9136f210c4e09a3573cee. 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/0e2fb0b4-9bbd-4172-92a3-d442a98f0d13.json and https://artists.proofprofile.net/proofs/artist/0e2fb0b4-9bbd-4172-92a3-d442a98f0d13.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 0x70c539c25e36a7f186d3e5dc0ab6a390813643ae16d5b3029172c80ede8314e9. 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/QZHN52251987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292fc325abecba501fceaabbcf63e19cee455618c1b9d1cc037c0609027f2594. 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/CACWV2067221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dd9157edf23e7a3128fedfcfe3f06e829b16669ca0d6cfa4be108df668432a. 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/CAGOO2019309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cda3fcf916133e94ceb73ef451323266116a7ae2d704a420c2e07bd3854e9f4. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZHN52251998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fb21ea7f53d0adeba3aedb2dadc235a17050ec05b0147808ce872db70b95ef. 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/CACWV2067243.
Hay Libertad en La Casa de Dios (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88859e5728148e7281b59636ea0ce180b5e036257075062a9545621d0536d5ed. 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/CAGOO2019306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e42285779ec1d428909646c6fe44957ff57c9c47141ffc542907ec2fa996e4. 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/CAGOO2019302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c03d812e9518219bec02e75c87afbda693a7e18e47b2705c998212a218c85a. 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/CACWV2086013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4efd5aac72c484e5a0ee36b2fe9f6f94473cea74f6f5636d78630db86601b6c. 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/CACWV2086031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe63d34e2837ed48f02d076817211d01c9f735a27f0a1a0ae32a74e63f1aa11f. 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/CACWV2086036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c8c7b5cf7284a247151963b40a62723745404ba4463206d8f0f965dbf58eae. 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/QZHN72244955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f684b85d2a120d57dfdd0f59aea3c95aca30141d5944558f98449f87057b092. 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/CACWV2086026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fc4c600a9812a39da749e20840487b3d7622d2d5c9385bd5f040fbe6a800a3. 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/QZHN72244964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c32c527d2925b000704e9608cf8b1427d72b0feb9f964cb45ac6cd0435ba951. 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/CACWV2086030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf4ee410371c4fcb4e137507cc15fe86fa43bfa68059dc2491fc4f2bbbb00eb. 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/CAGOO2006010.
A Danzar Delante de Su Presencia - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae921669bc121c13654ee9cd4a0088760323f9c5e3980225db751deb6a14892c. 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/CAGOO2006013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33fbdec36add34d169520d9cdc2191fa5fbc42a9f3104656ce13da4561703b2. 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/CAGOO2006014.
Grande y Fuerte Es Nuestro Dios - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa109fb3afb4f76fe627b15c0b03755d18fbde92237b033665ec2c3bfa1ed2b52. 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/CAGOO2006015.
Haz Llover Abre las Puertas del Cielo - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0a52e1cdf9e6ad967e517931fabc9bc4d916e9238a1466c866ab0b53517a85. 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/CAGOO2006020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6562160e1ce1c6dfdb0114a85704b33c81e8410e11dac3dc7a76a3af2e1e931c. 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/CAENV2055977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b57caadead447f4799ed1f34abe0643d78f3798a87e05ca9772e4bce23fa9b. 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/CAGOO2006032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b222d09c2ab87fa75efca1f85e5dd7d0a34610b2a9bfd0928c370802552675. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/CAGOO2006033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08705189945fec6f2d92ffa988cf5c92d5b7c5f51052f0e19906fad810ebcb0. 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/CAGOO2006034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5f01df3afa7e6a2012536ac77fc3bd16731c0bdbc55ecb5fa44a64aa48aeae. 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/CAGOO2006035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3694b95044d7b2339284f53f46e7fc65c1d85e1ac63296e29af16a7e6f85ea. 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/CAGOO2006038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3e7b8a3bc9e1013e284f14de36181022df0eac700d0d16c21efe1532e0cf1e. 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/QZDA62052421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6188635214946b272e0797512778cf4a948f50c2c1033a1cedfacb74dd3915. 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/MX2832512294.