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 0x72e3a25ccecd104510f4dcc28787d6342c91615b4cfe14f2597e81126dd6a5f4. 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/cc91e7ff-1fbc-453c-b59a-7a24f95600cb.json and https://artists.proofprofile.net/proofs/artist/cc91e7ff-1fbc-453c-b59a-7a24f95600cb.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898cf9802112143390aeb9e5b4ecfffc17c4f6f562af16fee7b55534e9a62b5c. 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/TCABD1298806.
Espontáneo: Despertando el Espíritu (feat. Lid Galmes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdbd9f7b556cd257e816378dd18370dd517354365e21c4dc1cf49a302719b3d. 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/TCABD1298813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0154a9c8c329f8790c5cda99bb9f9f69ebccc5a1adc1c583b267a686df2622e9. 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/TCAAZ1116140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fbeeb0c9f56b48a109033abd7913cc014956bb443461ed26c17aa4a5fffde8. 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/TCAAZ1116143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e57c2cc650521df6ce6bbcb18c01e45f18d2ee1558d68c28d053657967c6667. 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/ARD661700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d6b46bf205acddc9a5ff14f7e07da2a9481f8ba4b61f655969a977f4d01427. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARD661700007.
No Soy Esclavo Del Temor (feat. Lid Galmes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12d5235792981a1d5fb4d0cc68327a8d932003f17b864e174c362d154e3d2c2. 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/ARD661700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b47e99b87ba00a1127d464a7edc13693e5b5ece7d0521c10b33d39ab3bca4d1. 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/ARD661700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193a2cc011349d098a4747c0c9c2d4a3aea5fd1e08057a92ba5a7453b1cac172. 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/TCABS1317217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8e3f8cc195112a71148e74bea687f8782898392fc8cad5bc920166dfdfdfcc. 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/TCABS1317220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa255a6173153a35b0d77685f126e7624232d3769a70478fd4cc0d018371655c4. 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/TCABS1317239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d519c3dd6f6650b1d76e385fa68320ff9046e373ecf404a8626e0ed9ef491fa. 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/TCABS1317250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8266393215c731e66c0893b6cf1e189adab8fbaafd7fbde12c9fb4c2d1e94c05. 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/TCABS1317258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ea05809810a5cd354b13a5581f474c7ae601bc0637bedff876c9b2d65beac3. 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/TCABS1317265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf637e66b8be1663fee2714804bdf5a33b55c439ec64fece2ca03564de65c1886. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/TCABS1317272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d9b8a4f1e5f43ffea35bdf12c18479e8e2c832c6e26e56ad9d7c3e2d73e66d. 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/QZES72046298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f83d9991a341e14927ba264a57bba2657b9a8b45e5a9e8c5a1338f5ca958d7. 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/COA2N2100330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acd5bafd402b354c007d190e4c01b720ca5800cc2726e01be6d5ea5a8af15fe. 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/TCABS1317269.
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 0xfb68a808957874f23e0fc025aa626ec3846e7775d5a2f024b9181dbbeb942003. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/ARD661700003.