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 0xd9d0cab182b16f7e79257218e2a9fe6a6878e401e1c25e68bb0a42f721e79e41. Chain 2 (Bitcoin): anchored in block 953963 (2026-06-16T15:12:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/281c7479-fa50-4dd4-bf2e-1af5419105db.json and https://artists.proofprofile.net/proofs/artist/281c7479-fa50-4dd4-bf2e-1af5419105db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sambas de Enredo Carnaval 2019 - Série A
Qualquer Semelhança Não Terá Sido Mera Coincidência
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 0x0534820a92b6e943bdeffdfa1e6634aed43118c8daefae058f3cc8e228f22a8b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRRGE1812614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd5ee6860246f8b54144b6d500eda5eebbf20a225c9a010b026d944eb5beb14. 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/BRRGE1812607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3252bd6b08de34d362c0921399b0b52a08addbbf6b5d0b81890e03df3e56aa9. 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/BRRGE1404433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f4b401021417b27d74e069453170851fbe5e5c3c99ec68ce4b1cb8da334f78. 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/BRRGE1404434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a00965b3d65e13904d61741891c9d6362596f6d7c8742697c16e39ec6ece6a. 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/BRRGE1404436.
Cunhatã Chama Curumim Que Eu Vou Contar...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f16dd7ffd574b0a924f930c38a36fe95ec5a5fa87f066fcc6bff5cb3f2ec56. 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/BRRGE1404438.
Candeia! Manifesto Ao Povo Em Forma de Arte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432cc59536765b0eb66d97ed2c16ed932ace51d3a1d75448635c78195f643a7c. 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/BRRGE1404441.
O Cavaleiro Armorial Mandacariza o Carnaval
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99476c3c84a260c4433cd049c41c493ed138cc5f13d6930aa691d8542171774e. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BRRGE1404431.
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
Sambas de Enredo Carnaval 2017 - Série A
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0def5d1de98a886b54c667841152919fb00a1550b96806d008fb92871ca8ed. 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/BRRGE1606272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f2d177006834ec8da087dd91309a15bea79bf988db36bd988d55cba7655185. 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/BRRGE1606273.
É! O Moleque Desceu o São Carlos, Pegou um Sonho e Partiu Com a Estácio!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9d7546822bb5c59558a06d8d2e40ebb4669023c80562a0dfe059daf1fbe48d. 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/BRRGE1606274.
Versando Nogueira Nos Cem Anos do Ritmo Que É Nó Na Madeira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8baa1cf83b9ff106bb3dd630b57a685a32835a9d641828d6914e61699c5327f2. 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/BRRGE1606277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0e39e5c3f41ddabaaf9d9e7e7e6654bfb2da5583c4c11f6e7f0a6678a54110. 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/BRRGE1606280.
Samba Exaltação Upm (Do Iorubá ao Reino de Oyó)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681075e3b2c1d21aa87329f9d02110c7f78a24ee740bfed2718fd979ea05effb. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QZMZ92116845.
Sambas de Enredo Carnaval 2020 - Série A
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdb10fc7799b766755edf83b09f41c94a316e6a813ebf07521765d055ca940b. 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/BRRGE1911290.
Santa Cruz de Barbalha: Um Conto Popular No Cariri Cearense
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600faccbaaf82b3b0eacd84e0a87946ee13a081fa25fee67f85c9d7ecc0af3ad. 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/BRRGE1911296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed58a2e1d8671c634a4c52194d5c468d3770b4d97749209035ec42c7439ba9b3. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRRGE1911297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f5ae769ac1140304735006a96b400c1ee0d0313a6e6a99f326b26a9e0491da. 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/BRRGE1506661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402bc1d8fc0bc239780d8f06b88bf3023051d1fea3545b5959eb8beb53cb8b75. 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/BRRGE1506662.
O Alabê de Jerusalém, A Saga de Ogundana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91dd5dd7eed8cbd0f5b9c3d47ea1ed6a3907196ec8173397d865e8b34c830d12. 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/BRRGE1506663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70c3eeaa218908b5fbc08f8924823f1230935db4d5b5763ba20f8a6eb2d1174. 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/BRRGE1506664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc523d8a1916bb339f9700b6dab7237589e27847eeb630ead02c2d7665174d332. 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/BRRGE1506665.
Palhaço Carequinha: Paixão e Orgulho de São Gonçalo! Tá Certo Ou Não Tá?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d2dce9b5a97d210c623e3a2bba29d48dad44963e79ff29f52b32c8ab2b2d1d. 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/BRRGE1506671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfaeafbc30243648afd4f57e54e2a3df29b2620c50fbf53c3b203f55746a6175. 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/BRRGE1506673.