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 0xae7e252c295a0726738a3b0f84055134c1163289851b66821a2a17601d0ffafc. 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/d3dfe684-aeec-48ab-bd87-e8ee29f6bec3.json and https://artists.proofprofile.net/proofs/artist/d3dfe684-aeec-48ab-bd87-e8ee29f6bec3.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 0xc375f0777a24ebc1cf617e2edcf73ca1e72ddff1cf40e18ede2bd12d2907aa22. 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/BR19C1301381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca42fdf47a4e2e062c49cca703ae5e0208d773030d589af756c89c2dfa92d19. 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/BR19C1301382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133c6131a731f6ce38663f60006c18fecc53d6b5046425e0e7f4595ec66272ab. 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/BR19C1301383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472fb42ef5bb857a1e344aa1b1ca3f14e656606168f1801bcd1ef118c7f9eceb. 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/BR19C1301384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68d5596d00b67b37e5ebb524a5bceff7108c5e36091ae2469b53bd34a8a267b. 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/BR19C1301386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dc2ea47dc6c634247bbe90f3f8a2f1172463736fd95c31dcb9c3cd02dbfa8d. 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/BR19C1301387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bba73d539bb07beda4d952681733bc8636592a025c747c76f2ecc3ea5f4bfaa. 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/BR19C1301389.
Benedito Costa & Seu Conjunto de Chorões: O Melhor dos Choros
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682b7cae072616570a563731fc3517fefe57bd1bbdbe935055b71bd11f43427c. 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/BRBGC0400713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4d18ca8c2fbaf4ea5790bc454ad9a4e6cbcd8ee0088a36b51da9b2dc00f9df. 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/BRBGC0400714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae7c76eaf11a1189bebaef63120de86e3a0f8e6900b4bdd9487bbfbf5fbc4b7. 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/FR6V82475258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e232da279c36ba4a49ce711b4b78de6f0391fb009b672b58ba6be52e498714. 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/BRBGC0400716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33dfe07a7c8c8507317e8b4bb4710da30dc54762c7d8747000ad0c857f0aae0. 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/BRBGC0400717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea77bf1646e8dd7132ceef6d2b257d28799474ab4ae6e1a2441d22d1790ab3d. 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/BRBGC0400719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff21984e9729ee708230c1b6073291227a28de5c4af498d1cf4052fe20b0bd2e. 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/BRBGC0400722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bbe186fda19db1ee0ba0985bdd1b135dbdf3f07c02a09d4308a3daaf0955c9. 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/BRBGC0400723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c0ef628cb5948a0caa85d257b21113890b5bad856d96aac320f447e31dd04e. 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/BRBGC0400725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53201462bba35d19e09da26e20501999ab901e9e269f4ff4aa8082d56d86e025. 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/BRBGC0400726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1bff4ac5433bfc332ee115090f12e4f2ab9fd87c0539eab3dd342ec6bcdeff. 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/BRBGC0400727.
Benedito Costa Homenageia o Imortal Ataulfo Alves
25 Sucessos: Choros e Chorinhos Cavaquinho de Ouro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e232da279c36ba4a49ce711b4b78de6f0391fb009b672b58ba6be52e498714. 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/BRBGC0400716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d82070d18561ad6a077ded88e4241f5471f49608c2bfd0b6baf342ea452cfb. 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/BRBGC0600180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea77bf1646e8dd7132ceef6d2b257d28799474ab4ae6e1a2441d22d1790ab3d. 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/BRBGC0400719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11742f48d0b9417a5d616e65deafc935b72f448d1ede378df5f35b5f147ef907. 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/BRBGC0600179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5e241c701600123dc2c7fb0343db023bc3c9d6b978c480cab29304a0655b5c. 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/BRBGC0400721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff21984e9729ee708230c1b6073291227a28de5c4af498d1cf4052fe20b0bd2e. 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/BRBGC0400722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bbe186fda19db1ee0ba0985bdd1b135dbdf3f07c02a09d4308a3daaf0955c9. 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/BRBGC0400723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb9fbed71c0334560084217418ef6a0a967f36d3db4b8c5a7a3bd57d5727999. 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/BRBGC0600181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682b7cae072616570a563731fc3517fefe57bd1bbdbe935055b71bd11f43427c. 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/BRBGC0400713.
Pot-Pourri: Dadá Dá o Tom / Urubu Malandro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16994342b6ff696572f9b60c724eda7824a618f6d2bf8372ad86df8c20c01790. 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/BRBGC0601317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1216e29412ee8d92c8cfad1fd4b7de40340d9a7bc4508fd6e0f175628911a1. 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/BRBGC0600189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4d18ca8c2fbaf4ea5790bc454ad9a4e6cbcd8ee0088a36b51da9b2dc00f9df. 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/BRBGC0400714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11970a26bc4f02f1c7241ee18e719d67b20bc97273d1172149c6fcfaa752dc2. 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/BRBGC0300296.