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 0x3b373f263f9abac0cc33173864d91eed1fed7363441bcf5f03cecd2c4aee77dd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b1029b4-3c87-4b31-9bfc-d81edaf7013f.json and https://artists.proofprofile.net/proofs/artist/5b1029b4-3c87-4b31-9bfc-d81edaf7013f.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 0x3ef73c0cc88a424834f91c2268a5eb3605411abcc9426ed7f44d17ca0841214a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:12:08Z), 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/BRG721600809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca3a91118d73b2aed9674b1c7ed747c01bac97d744b1b91bffac32e9d67d240. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/BRG721600815.
POUT POURRIT.(BOA NOITE - PINTOU UMA LUA LÁ-RECEITA DA SORTE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7dee0ee70f3f4b51907487d57b151cb9935396c3bff55ca462d3ea2b87f0b4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:52:40Z), 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/BR6972100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81534a81bac13f0846ceaf4e51def814d97142d11e0775e84daafc7d8141c8a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BR6972100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac51c6f26f1fc54a2eb5b2c121ebce2c19ab2b878eba6f2abec19bb80ea4465. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BR6972100003.
POUT POURRT.(VAI LÁ VAI LÁ - QUANDO EU CONTAR IAIA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a09201ef4f35e1ec208256dc972c1c22c6fe3d7ff3db00e5ec3c77a110d4e5. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:06:41Z), 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/BR6972100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb28b70d0d60ebba47cbd0f612fb5c19d880dc14ee37e72884cfee390523e2a9. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:03:19Z), 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/BR6972100005.
POUT POURRIT (TENDENCIA-AMOR DOS DEUSES)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15246544af897c9c5726a40225c44b919cff2f3f5b5c8553c6cb34d1bd5ed507. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/BR6972100006.
POUT POURRIT (TERMINA AQUI-PAPO DE HOMEM e MULHER)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec43e2fef291b0acadcc964b482e382ec5016fa7892d20d81cd3b01eebe8a7f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BR6972100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17ce5a10add27d90a9185c37d392a93c4fd3321eb7e35794ee7c6846982e10a. 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/BR6972100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdc01f90fdf8b77ac8501d75b55f2b77f80598c05f3d0e93007a3b4f7e737b4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BR6972100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d64eab535ba25d67d32a834d000b2ee663feb01a4d0ec845c7fdc5bce1edff6. 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/BR6972100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c0f58681c5aa8a91c17608be0f7ec18787204307f3cf094e8ff96f838e4cc5. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/BR6972100014.
POUTO POURRIT (RAINHA DAS ALMAS-SENHOR DOS CAMINHOS)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dff7954e3f30ea4a40177204e7fe3633c209e8198d34dc36a8a32ef00e3d60. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:00:45Z), 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/BR6972100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d41718bf3ba5345ffe230211f259a089abf77aacaeed01a9b5ed1260c52a2d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BR6972100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5060f6831dd792e63545e7eb7f2e7f58f47045ac66af886591b6afaddb035f76. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BR6972300001.
G.R.C.E.S.. Dragões da Real - a Invenção do Tempo. Uma Odisseia em 65 Minutos - Ao vivo
Carnaval SP 2019 - Sambas de Enredo das Escolas de Samba de São Paulo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bba0cdc64089921011643168c3de4649c96af6488a638bd2f3151d0942cf12. 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/BRLIE1800005.
A Revolução do Riso: A Arte de Subverter o Mundo pelo Divino Poder da Alegria
Sambas de Enredo: Carnaval SP 2020, Especial e Acesso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76deaf73f488c596c9365493913964fa65152a6d086f6861af907c2f8e63d4a4. 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/BRLIE1900002.
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