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 0x8014fe5c85196014e1f8945d7931bdce34f81a03bc00c03c8973be9e35ce5487. 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/40f546ad-f580-4dae-93d9-620ba445652c.json and https://artists.proofprofile.net/proofs/artist/40f546ad-f580-4dae-93d9-620ba445652c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sambas de Enredo 2022: Série Ouro (LigaRJ)
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 0x63969ffa5af0583279e09120cd661615e3de53ed41d54d7747b269e4846cf32c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BCW6P2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cf0d063fa62eec7f1888a1f8f0b0839b38552f3231f3f85365e39e200c527f. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:19:17Z), 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/BCW6P2100010.
A Invenção da Amazônia - Um Delírio do Imaginário de Julio Verne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1819b97edbf4993832e61bd1c1091f2ab059b6219683f3138b22e7399e80b78. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BCW6P2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524894bd59e8e0e6f60ade341e7b96054b62c28dc1868e458092ab78dc333b27. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/BCW6P2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3bcc93cc5f2968d5701bc5a4a6a3c4c3936a29686201adc4128e39b3d6ad22. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BCW6P2200013.
Debret Pintou, Camelô Gritou: Compre 2, Leve 3. Tudo para Agradar o Freguês
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0656e21d8b9d8f2341c505fab19e92a20fb741ae5cf38057c59fa5d2d226ed0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BKST02400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2362ab20b56029ea8421245288cee2b7fbbf93e25fae9b3a0b7a1d0643e3fd38. 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/BKST02400007.
Doum e Amora – Crianças para Transformar o Mundo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85ad3a23d5d3870756cbd33a87970f367125b2e165bf58be8a23f4ac646b0dc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BKST02400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1a28c96958f9c560302fcec3d6797f8e8c43d9042e4e76a687bd53c2127311. 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/BKST02400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f7c7d3dc865a8245655756f51a8bb3086c20ad4142ed5da26f7279bc0fee56. 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/BKST02500007.
O Leão Se Engerou em Encantado Amazônico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799186a0009be97ad47f0f92efa8723d507648e98440f8dce7605fe5920154af. 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/BKST02500006.
A História Que a Borracha do Tempo Não Apagou
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa19e087051c1081f49a4c230e4e49a5c06e7ab72420d3fa1e625feabd65cf7. 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/BKST02500009.
O Cavalo de Santíssimo e a Coroa do Seu 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c9ec5bc0aa299ba98e8b509800bad80d0a155a13d949c82302bb71b85f10cb. 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/BKST02500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b887dbd9b4b6c870047ad64486e37be021cf24b36d89964083b1a2cbd27f8cb. 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/BKST02500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8602ee0bcbc6b9b60442e60673d0f7957f11f2c9e6891c935cccb95b1be2ab6b. 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/BKST02500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc8eb3718815fee037d2cf81a259ae82be82db12053c94ad1cc24b8d79da9d9. 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/BKST02500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99acd4fa9ef2d2b1c96dcd36c65f0a67ceff478953f8c258ac9a450d9684c192. 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/BKST02500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbcba7a1f634843b3cf21aa5625376c92305525cc9abf159c3a3b18919b7d73. 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/BKST02500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e33b76dd63a66d71e61d51d6c6821885e6a8f120c72cea2d6f5fdc72b943ccd. 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/BKST02500016.
Antropoceno: Ecos de Abya Yala em Meriti’yba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed01d5178838ac6de19958e5e6d7a619ee2e3a3216b1920d4cc157308e503f6e. 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/BKST02500015.
Ópera dos Terreiros – o Canto do Encanto da Alma Brasileira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a168e31a80f093c0f08e85765b897f8eb9c90f1d55c295768d282b7e57a5b92. 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/BKST02500005.
Cordas de Prata: O Retrato Musical do Povo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5ba07dea9aed73af93f63c9c68555f3047c22c967bb5202f270099da767a19. 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/BKST02500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b18dfc0ce6266747817c8a2e6b95f0887d14eb1cca9de59abc7854fe0a7d1a. 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/BKST02500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af631ea302b70309cf56f3d290f1b56fb2f11fce9dbdd76f690f278641f28f3. 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/BKST02500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e28bba5bf2e1d635180cab92deedf104414aafcb4eee40a8e866c482a4010c3. 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/BKST02500004.
Tamborzão - O Rio É Baile! o Poder É Black!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b06633ba6b64b695ca913bd22fb87f0a4ea038404940c007af12199e2653fc8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:06:58Z), 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/BKST02500072.
Tata Tancredo – o Papa Negro no Terreiro do Estácio