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 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 0x4b14a0a6a135535bdbea3af20405029c3772e628476255c6580a9bcbcad83c06. 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/e35c5058-6b8c-4125-b318-c2091f6ed3b4.json and https://artists.proofprofile.net/proofs/artist/e35c5058-6b8c-4125-b318-c2091f6ed3b4.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 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 0x91195dc5bdf12cdd56f8da4073b31715115e8ab0f5d3f17aab46b27f94430d24. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USJ3V2344396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5968da368765e487efb9af29438200bd181f6b1301b2201cd93755722e2039e1. 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/BXZ3L1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1eaa87e57646c371ec2d3f56fbfa036f8e5844ee605240c1c5b4d250c83601. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/BXZ3L1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0223e2e060f8b2057316ec30d0d62ccf083944f811058b39832023d780a77783. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/BXZ3L1800082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206c94dac10383f15389e56aba89ede9294d13bf1d48effaae38523e0f52d4e8. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/BXZ3L2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1576c6b3d636dc0f25b790cd7ef9cae87deb71380df03bc67cb24a075885fd0e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BXZ3L2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bde03225170f7b10e17e49b8001c739f35feb008f401144844bc9430db50f7. 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/BXZ3L2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67178f0a97e27da6594818b5b43bcd8808c1dc0827336ec72ef0abce4f3c39ef. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/BXZ3L2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e2541a93fb5f4b5c574f69357efb0e0975f90031c733b65a8d1799a97d7386. 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/BXZ3L2100005.
29 Prêmio da Música Brasileira - Homenagem a Luiz Melodia (ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d345962e634b1493044f58237322d30d544d6c79c9d9f0564c027aa3d7d145. 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/BRPUI1800525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcb5df75c66a33ab77494e135d58a1ec4338eb6662987f843b07e62888bf7d9. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/BRWQ61600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc6f18a03a1a122697e6266aa6f3f05ffed8a66153adfb008200ba87d7658f5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/BCQAB2300029.
Estado de Poesia (Ao Vivo) (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5644636de9732094ef180c6f4ceb6a600a3068ec86560182ff23127a80834571. 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/BRC0H1700024.
Mama África / Brilho de Beleza / Pra Não Dizer Que Não Falei das Flores - Ao Vivo | Bônus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e052b404374d0843c6cc89983b97bbc67864000b867620b3ea3eb16e7bc1ef. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRC0H1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd790a8d7b08d39c9833d0b767c04838d6d9676a6f5e502bf45d7c5aa4127fc6f. 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/BRCOH1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5644636de9732094ef180c6f4ceb6a600a3068ec86560182ff23127a80834571. 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/BRC0H1700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1854983c86991ca30f7d1c7cbf2db3886b3184df21c8874facc2f18e414ced5c. 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/BXE691600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6093f3ad9ce14892e4a1c126e3b4b01151ab5c6fee717224a0f21f7a6a812935. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/BCO132100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173b25d3b9c3f7baca87b0967e23cd8bd9c50b8b16f58ef1588356acae5981ee. 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/BXYNA2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173b25d3b9c3f7baca87b0967e23cd8bd9c50b8b16f58ef1588356acae5981ee. 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/BXYNA2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecbf279bb21ac3f2f8f797e936ddf3d7c75ce6b035ecfafb47e5b7230409d73. 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/BXLR91900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617828990f7b59d159b0276e7ac1be6dbc666971a104ea09427bf830de44d81a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRDEP1800346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d32299a9b6725659c839c5773318f73b19a65ff272d8b46a1279472ca0524c. 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/BRDEP2000233.
Te Conecta / Tudo Me Faz Sentido - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f8f2d7629525b681614dc7c03a730d3d39ca03e163e54051361bc7a0fd7a3a. 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/BRDEP2000234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc4b0bb23c07857fa8a06b70c629fd0bede41cfe96542450119b6037c4e2317. 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/BRDEP2000246.