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 0x594d66ad53d924198b8e7ac415b185227a8c02005b5eb5d415ea31f100072fc9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af17b9ca-547b-4e14-9780-8e876f826285.json and https://artists.proofprofile.net/proofs/artist/af17b9ca-547b-4e14-9780-8e876f826285.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sambas de Enredo 2025: Série Prata (Superliga Carnavalesca do Brasil), Ep. 3
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 0xe4962334bc3124071f9467d23590cc287e4161a7e082aef89ac8d74a58ef29b2. 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/BKST02500028.
Aqualtune, a Inspiração Forjada em Pele Preta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc03fc7de1fd394dee04a3530f25cedceb5dbd69d6b8039019918636444d7e3. 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/BKST02500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3369552ab07945f3f8250c61244423b7c8417040c1b0ba8148e8a20317a7dbf. 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/BKST02500045.
Sambas de Enredo 2025: Série Prata (Superliga Carnavalesca do Brasil)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f7c5cb472b4486f086376fffb78a10f1ed5d2a905929bf79f136b03d3bac3e. 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/BKST02500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1785262eeecf866b5192d13d59a65923cd9a23255fca23f9f9769518e23ec77c. 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/BKST02500037.
Coletivo Gazela Negra. O Quilombo Contra o Racismo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b952cf6fe30da7379e76b9af0747aac38142124e25d1dc44b0eb818b4c1d2b. 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/BKST02500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3369552ab07945f3f8250c61244423b7c8417040c1b0ba8148e8a20317a7dbf. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BKST02500045.
Salve Vovó Maria Joanna Rezadeira! Salve o Jongo da Serrinha! Saravá, Saravá, Saravá!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f096c45fcf35854d2b6eb5a1cfa4ae45cfc937f41cc909ca6855a3d35820274. 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/BKST02500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4962334bc3124071f9467d23590cc287e4161a7e082aef89ac8d74a58ef29b2. 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/BKST02500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc03fc7de1fd394dee04a3530f25cedceb5dbd69d6b8039019918636444d7e3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:05:35Z), 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/BKST02500038.
Sinfonia Poética Daqueles Que Não Se Deixaram Calar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2472f8f14efaa2ff20201ad8b908d5191d3fd06863776ee6e4b84bf693b9faae. 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/BKST02500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236829b00cbd928be7982aa66c08f779a44ee076d720f7c5135bd899975137e1. Chain 2 (Bitcoin): anchored in block 957013 (2026-07-07T08:31:11Z), 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/BKST02500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c3dbc256125982a52ca6b19a9cedde3450f3747bc7d3bb044e70679d6c192d. 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/BKST02500020.
Asas - Sonho de Muitos, Privilégios de Poucos, Tecnologia de Todos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9135daac27aa326f1c5f0f9bb16acfdc29fe73e36fb521880d8b64af9210b7ee. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BKST02500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1143d77c74201515ff7976a4cd4945a02fa5f685c51821618b4fe5a4bc7b8ba0. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/BKST02500019.
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 0x5b99f0b98fc9c65ed59cb442810d153b750e02396cdb1859c5cc3e151000742f. 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/BKST02500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c954cc3cf3da3eedac032bb88c24ff681c073bdf9f921811dc6dcb322078c5. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BKST02500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23022a15fefd25b1a0c250207b043f0203bf9ff7d2f5bb5a313b3a9b1907aa16. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/BKST02500018.