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 0xa589960053a5f90a925edbfb2c4b2e5a4e2442070137a6b7f74104e00e263baf. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ba413d6-076f-4c4f-94bb-35123deb8aa0.json and https://artists.proofprofile.net/proofs/artist/8ba413d6-076f-4c4f-94bb-35123deb8aa0.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 0x82cb61dcd755e9a4066c2165b89c1ec95d3bc5859f3e3ad22d2c8321e1e8e003. 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/USQX92205639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ff961793ef6db75b964135e0f092e138319fb649e6926a7393865e52276731. 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/USQX92205640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39bb203a90dbef706a5be4122ce6b5cc22180ed95be07ebc6f9e76f3653d35f. 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/USQX92205641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06240e82a030652206dcc2ae5e3cfcab92249bdbd286f1aff0a9579894eb4c3f. 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/USQX92205642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d2fdfbb0089824df17a48479aad0a7b7a86b8fc2fe02f6a1dc07572fa9d6ec. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USQX92205643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7666e194cc7f09cb1cab737ee739c0ac7ce457a377759366f6f54dc9d9a578. 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/USQX92205644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe154c8b071288e66cd4a5bb2b8739b35afecb36c8dc19bc583d5a27f20d03bd0. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USQX92205645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29485e5392a9e2fc0282e4a32b2c1a5000c35e767c549cb81a5917c8edb8a157. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/USQX92205646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99346e76d39fce48e24bdeca1f39300b03948e95f35f3709959b08e20266fbdd. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USQX92205647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae5c8acb5f846fe522dedc2fa93b0433b1c96bc577463689287f493998efec6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USQX92205648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b1f3fa96be90e2e2b230a3b46dc8e752d238b85d014fccd3c4d4c2e03c0a65. 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/USQX92205649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e16eb83eea07c4a1e3b862c210827c3c0fc0f1b97aeb7f796758ef139352191. 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/USQX92205651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc110d343cccd31a88294d52a11acde0b231d3ed4eb7c73710029a5da737634. 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/USQX92205652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e023ca9b4e9c64f71d5b80f7e40d32c637a4d32d5544776f5ac704556db308. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USQX92205653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8206de980552e92088c01fbf6dc9e10a8d81ebe7973f7f6264b53b312f8a31ab. 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/USQX92205654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18461cf1694f3f56fd3c5f15d224e57c507732b6efc7f5865bfee6736123cd0. 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/USQX92205655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba4b4c0949c1ba7e0e08dc23ab50f1964ac77fa86c76ebc02146d08b9641398. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USQX92205656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9629e05d558bd9fb0511e994eb3f47cfa8ecc193e068eb98d9c82840fd7d0866. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USQX92205657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0495b46a2d12799c8b4b0ac766667b4323a0c256f4914c1f7a23873557e02af5. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USQX92205658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdc753d4764dd7921775830c022db02e927b486feac3f598a28e8919ff8614a. 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/USQX92205659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83437e2b5e9215430d33455080ec602c54c509457984b6fcea15547a7c8f290. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USQX92205660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56967b121f7b70f67aa6120403ed9e21233e494ea48f8f275089a9aad1bcd8b3. 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/USQX92205661.
Breaking Surface (Original Motion Picture Soundtrack)
An African Election (Original Soundtrack)
Tierra de Sangre (The Original Motion Picture Sountrack) (The Vineyard)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452ffeddfe64e2bb3f89cda3cac269cdcbce074a0ddb14f307225819d7a87361. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEBL61387000.