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 0xb985c71d0945f4a57ffa41497792026e5b74836616b65d1853b6fd96487e2f08. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a91b722-85c9-46d3-89d8-a2ae74fe235e.json and https://artists.proofprofile.net/proofs/artist/0a91b722-85c9-46d3-89d8-a2ae74fe235e.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 0x4527574a75687134681a3b8da6c2979294a3a9a0f092788f904e4d4f4a5c32e0. 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/AR0E32400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ac459f12d5404a5aad32d33aa56423d57941b24a51aaba1141484eebb977ad. 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/AR0E32400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbeac883fb8b6bb61faee9bca10bacff30d8efb22035f5e003dd10eacd277b6. 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/AR0E32400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e011a78a0ccdd57e718d11bbeac2b3f54bb1b627891cc0bf12e51d58c6bda3. 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/AR0E32400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c069f67f862330543d530b1b431398f90db4c71b67e1cd65abc775c7c51cd6. 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/AR0E32400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35720d291ba3d68a2893bca8a9f6a9769f3ad099a45a9a4757b37a5ac19da394. 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/AR0E32400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324ce4946ba83873304965e4b4296d3275c74d59db226223f2aa1b79229f7316. 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/AR0E32400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b025aa1f8b5ad18aae0335b9773adaf13c06891c790c48007456251cdb156c0. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/AR0E32400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc004f628d640dc7739fb2c58a7efcbafd1e3c2fe2f2e2a9ce27c35a69b270283. 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/AR0E32400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde4574750c87abf21845b658a1f42f914d72aa977c2b39c264e9cbd036bced1. 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/AR0E32400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae24863b7bffb436453770c23d22dc5a41a2ab72b36e14880f8ef589d05c9614. 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/AR0E32400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a2f8cc75e20c1f71b0e4cea3b63888d9144a120ec3d4b8cbed843339589ba6. 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/AR0E32400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef34c95bae54bf155f44867cf397ffa0691a247d052deead4a9fef0917ceae19. 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/UKR6A2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30db91f413e44a365d72e8faeec31da81917c3200205bb78e6581a8c557d0eef. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/UKR6A2300003.
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 0xa67483ec88e3a3f0c401c0a51f66537d63bddf1afaa031af641224e5dc048615. 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/UYF942100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5bb0e25f6de99a687a8861a4e7da3e91f558880e597fc7af66a568e1630214. 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/QM42K2399318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382f9b5bb55bdf4b8a6a3826b9f4c06208bf5c546d705ad725c7ed11e1c0fc49. 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/QM42K2345857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a06a9f5f4d42b5d1f6de347c172a2294ee853480ce53bb306676753f027d1b. 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/QZMHN2358570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bef482cf7dd0a7b4d7a1636611c2cdae1faf8ca9dd531acac054a7f52a77422. 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/QM42K2339677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63e6f388a150de3a4cc6c6837980391a1b8c443fd040007e21671798740b1e7. 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/QZS642311835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333d3faf97a6b1b19d036ec7aa86c0a219fa6c29b82c32941f9837e6afb6d761. 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/QZS642377620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bdf974fbb0fa15027ee9e642d811dc02d42e6756618f0ab9c41c5270efc71c. 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/QZMHP2350169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff92f629f9030dd305c17651e0e6588f3530f761e7b88e3a66a0b676c8a7fb4. 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/QZS652382694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce5f93c40576de0940de743b907d8f50b2ce00529618d4de0b27b673bbe1c2c. 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/QZMHN2345725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16370dc9f97eaeccb8269e01ec4178f4ab3bac75522cbfd812d86f9161050117. 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/QZMHK2352221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e891837ed00991b5fb3eaa8f4bce33105f6f4c98e68ed95784bb60ff5c7c10. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QM42K2390031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6614a8d4b4d3508c04cfd13138db7ef5e2453f7ae265687ce82510b4e78aedc2. 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/QZMHM2328496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfa1e542610c54ce2aba1cd1172c0a2831c9e05342f2d624150c1dc6389b2b2. 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/QZMHL2387283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032734cf48ac3e81e818e1100bdc8f1584b7b4463b6590bb33eaf1714a8b0604. 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/QZMHN2306136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ea3371bb9792c7c4f0bd318d7f3c10b5bfa937ea293f6e1c6d3cf06fdefe17. 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/QZMHN2386543.
the way back - Lila Tirando a Violeta & Sueuga Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea98ae375bc55566eca2101b79dd9c905f32dfd4d4a45366ac7d2be86630ff53. 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/DEOE82300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6b25fe9ea2398d2c11efe4ed7f63d2595e6ed5a08d30102574a443560ac261. 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/DEOE82300019.