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 0x3004936c50f50ecb66e5f679b9c4d5f2dd417bacd5477256097d33b7800cff90. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8668b46-5687-41e4-89b3-6814fbb603d0.json and https://artists.proofprofile.net/proofs/artist/e8668b46-5687-41e4-89b3-6814fbb603d0.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 0x9180270b8b156f777f41b1d0a88e9aefe3f456115d69156a19059e7682371e08. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEUM71601385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cb2d8faa33ffab049b1f13b12dd248528424686bca93ff36a217fb6d48821d. 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/ARKZG1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ff8300b6ba5f9bb11a1e4ced470c2d4cc5ae8fe9e21639813b3bc86fb467b2. 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/ARKZG1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73378a2f9f9b8dd86329d8305b412384033b8122b9f844543d6354dfae4f2fe9. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ARKZG1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0081e8f4800077c000692c2a6abf7dc891a09e2e08ec12d4eb42ac17f60e6693. 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/ARKZG1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed5480b1c8c44599387ec6ab4eb079109194d8cb9b5ba8697362c20453dda30. 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/ARKZG1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5472c6188e4bf8feb4c3a4e6d292abfa88ff2778d0fa90fd4a995e557780aeb. 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/ARKZG1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36d667b346530dd259f0610cfaa472969955edfb7e5a8bd6f957bd8440173ee. 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/ARKZG1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29273522f3e828fb62070972b028f4ea31d410788c46a06ca6382537419a7eb. 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/ARKZG1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5631f9e6c93f4edb157365500b5ba27dcb6a01673322025f6ca128b6809a5d94. 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/ARKZG1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2dc615def3e1be211f82b6a95cc80c28dd1a88e71cff6d3e071291c0d5e155. 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/ARKZG1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd928c12eb5a3e9164f10566d5ce88aad065b3b8bf0dbee191f93e94b32fcaffa. 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/ARKZG1600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f0f496db13c658836407c9dcd6916f923ec417349472da95dd323ee3e94dcf. 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/ARKZG1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3104c7d2d73048562ccfae0ffb2b8cc1af6f19c71a3e682de6a6b1303388d13e. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/ARKZG1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0e3bfa84f179d6e204bed5b9d9772435fd66f4b5a9dc3e8864e72d597c523b. 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/ARKZG1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fed17876719a42bdfecf4230153ad01a7dbca97be333dad1ea35e7d9028221. 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/ARKZG1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28243e50574783681cdcab11b37ad90f1863a797ca540a3da92592d60b679e19. 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/ARKZG1800004.
Mustafa III: las Penurias de un Robin - Batman Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77469e2c10edc6212c5245e74761943ff353497babbe294682d62e7e93610b6b. 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/ARKZG1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5829ddc59c888aa7ebce27dadd26994dedf973784d9c5d141fb0735c15ccd0. 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/ARKZG1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa0f39cf27366369fec5a62133d9996781f0a7a8e0cda5d9a1dc1d30499bc28. 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/ARKZG1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092e51d2f8f535450ab6bb9f22f5910ad330b49b8083e0030158ee81eaac472c. 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/ARKZG1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bf41a1a367c18e1b763e5a2fff598026a78580e30fe4b6775dc51444a61af9. 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/ARKZG1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa546928ff7798fe5afc65a3909f00968ad89b09027e6ccbd37e44dc2aa888799. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARKZG1800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f14a1205ec0a2dcbaff0e1353d4e62d5808503828e45cc4de739c7aaa19439d. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ARKZG1800018.
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 0xaaf033cad0591e5a98c9280a5f19df1eb22bcff82d04d02fed675b5b7ab51167. 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/TCACX1739549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f21e0169bc6aeb4e18014e2b2648f2b682bd867f88ee8671c34b215f1ae53c. 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/TCACX1739559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a6438707a7457750936d3dea7dd04007e18d40990ede780448d62431fe6dd6. 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/TCACX1739562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd86f566a0a3089a733e5a98b5e903d111497ccffeb0774534db1718213b8d9. 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/TCACX1739565.
No Me Mires & Up Town Funk - Vivo en Niceto Club
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abc28bd0fa1f29b76d1887e26f5acec9ed6edddeb6754dc731dd2fd110926ee. 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/TCACX1739567.
Abrazo Diente Sueño - Vivo en Niceto Club
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf188d5d23c565d0ccb5e92b291fae1ea1539a3400c43ccc5de79668df817f621. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/TCACX1739573.
M.O.C.O. (Músicos Ocupados Componiendo Ocasionalmente)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543375168c1d5ba793e2144b0062a87bcf0c11ab806d4aa922a40c04ce7a20ca. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ARA491900180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c3214d59bd8f49820005b714e11bdaa64cefb7f367d4fdbc8c59461a328f23. 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/ARA491900181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f11427b9adfd3ebd721ca4dea80520a7f930fb5d2268ee14e1af237f11ef23. 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/ARA491900182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8eabaeaecbf8c4b9c697b6fd0817b25f856e2e05b2d7d74a882a8915aa657f. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/ARA491900178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35b6050babeba52652f89eae9beccd7e719e27b0f724eadd94bb642932473f7. 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/UKXN21982791.