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 0x486366898188a14065050a602969005a8b223c7ff23ff756b8ec43c6863bfd4f. 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/a8f63833-0f84-4ef8-9502-c1fb5e67830d.json and https://artists.proofprofile.net/proofs/artist/a8f63833-0f84-4ef8-9502-c1fb5e67830d.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 0x27f0988976325267765a273b141c6ca0ef235a18ed20e091e09ec868331649e5. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BCLWS2401043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf6592a2473e6a756634734edac8aa7514a87da4c8d19bed7604f31a86be96f. 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/QZW9M2262735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b35525c265b9fcc54ae35279c5ec02b7650a72e656119da82376a98f91ce4f. 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/BX5EU2200073.
Cola o Bundão no Chão, Joga o Bundão no Teto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5821b8dbc042e5b124682e7d9d7e6c3488c9189b93966b760fceef3c2a833e67. 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/BX5EU2200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cabf613d96cb24a829ef0323bd86e72990b8cb9f8ba510372c25d2e4be7b1c. 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/QZNJZ2437153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be286cef5cea2cf3a8acf4fce131dea432b44c075cd5784c12fd5a8a9aca5cd. 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/BKDP52400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31bb55045b30f162e4f0a512707d37ca5680c3028b0bee8d94d6b26ebf2cc1ca. 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/QZNJY2472329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fc009eac7c365026050a77ad38619535fea580cb03b90438f0a47ce5e67443. 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/BKDP52400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7563401479d51e87f6952e68c19d90bbf8985e173472da389667c8ec3dea833c. 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/BCLWS2401047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c93ca2be48b26d5cb94bcffea56b026dfa74c03e0e11101d3d29ca1d0f928b. 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/QZNJW2440578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00153b20948e3ddb123df557308a6bddf4ed0ec4fb63d8f5a4cca36678ac703e. 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/BKDP52400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b0532cff32c4af104c65747b8210c21c7308fefdef6663967db6ad07888202. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKDP52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69351266040a090a9c02f78bc83e20d2e393a80669d233f7fd08a2050c9d91d. 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/BXCDQ2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105a71d036127a9269cf2e84f603440dba0ff3c786fb68029d651c017686c716. 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/BKDP52300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee42edb4730fa95c1cb4b5185174f53f0352973428a8987567f48dbb6319e0e. 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/QZGLM2383945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d34caf92d5f5f05c70eef89e06a0ed6038d545c222c27ea181e6b9494d58779. 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/QZ5AB2362321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aab9cf9ce3f34228e0a665db178a69a95c7ca8b98ef13111098167d1bd28d14. 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/BX4NU2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfbd4b12c9a0db65d033419bf653fbd62da42b8601055a4a6ad38c3588880f8. 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/BX5EU2200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6467323d9f85d209154032a710db13731c1ccf73bbb5658323f1469b2520cc3. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/BX5EU2200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac88b7a52397c9b3df51d46547576bd9481fe5e2b75a34a1098431b01dceb6e. 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/BX5EU2200081.
Se Tem Disposição, Bate de Frente Comigo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154c38c82ed56e3a9487fa7d5e453c8e659d4743d9540440de5e07f05a08a436. 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/BX5EU2200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8e493a18699db871f2b5a993af1a26a885df68a48d854c0667ab347eed58c1. 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/BX5EU2200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe36ba0600e6cd364daaa300e30e8a32b9eabbfe486e4e65dfbdf6911134da78. 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/BCNHJ2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7448e5c7b45095136f944828c6e38ba53c52733fb2383bd695bba1eeb0b9b216. 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/BX5EU2200003.
Quem Perdoa Buraco É a Prefeitura de Cuiaba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf71d359ba0c46a2d3c0dffeb151b848839ad8cd42da9d57235071351aee744b. 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/BX5EU2100127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6827768d5856f4777262480d69d1e1fb5d52afffa71d09e6029f91833db0e180. 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/BX5EU2100130.
Liga o Flash do Celular Que a Putaria Começou
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc102c6d9d9ffba5c97e207ff9c91fa0ab31bfae0f4e97192f9a6459ec49917b6. 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/BX5EU2100125.
Joga a Xerequinha Pros Faixa - Joga a Xerequinha Pros Faixa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c477df1d84560c0cd89c88ed0d1b51041cd281f768eaead702a5338633bffc. 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/BX5EU2100129.
Eu Vou pro Baile, Eu Vou pro Bega, Atrás de Xereca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd68041516364f090fbbac23e4cccf005c35a038fd4cdda28a40d98c729f585. 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/BX5EU2100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb885ddde031ef92d1d07eea3e66d8f12648eede4ec2acfa606b610515c8b116b. 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/QZNJX2156841.
Uma e Meia ou Duas Horas Tropa dos Sem Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc14ddde9dd64ff880664ae2beea723f0859616f6e99c7c916193ff5744ed13c. 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/BX5EU2100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69351266040a090a9c02f78bc83e20d2e393a80669d233f7fd08a2050c9d91d. 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/BXCDQ2300022.