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 0xe0903bbe3d5790a93bb19a55e280a271a454b138fc00f3a6f59530dbbb91608c. 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/614aa325-e67f-4e47-830f-d66503690e8f.json and https://artists.proofprofile.net/proofs/artist/614aa325-e67f-4e47-830f-d66503690e8f.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 0xe87aa239eab981448c1a8e5a8f612c7c26e8618934507ac38bcf99fbbd23da14. 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/BRWQ62400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07dd0bb2a8486ee126551322ad50dea288cf739cd59dde0f04787fcd31cd51e9. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BRWQ62400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9581e06e86e869aaa606e416fe43b93e642c3b1ddd184561e8ad505590d61b. 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/BRWQ62400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128402a5b8d82670fa509d948c170ce8aaa164f3d0212de1bc3dfb89f9e76863. 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/QZTVM2255758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d09f24f5a43268eb7c9a97f35840d4a50baf3544b1d04dbd4574a778cded04. 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/QZTVM2255759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5384cc7f327a0a7eecd3dc1fa2b8bdd36cc0ce76b9f2eb481eaf30a3b02e143. 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/QZTVM2255760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205a8b5eba634df38298031edf363c207adae135dd04e84345574e57b45f28aa. 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/QZTVM2255761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c83c9641eb6ce69c65dd20792ac5b6ea754d69d036a79c0b7775657440c1042. 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/QZTVM2255762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f4caf93ed3a042a03a4b2c5967708b30c4551ec17ac49ed692817eb3385cfe. 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/QZW9M2263477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe60338ca866cb213d6b4b9ed4e61fd715643e4ebdf92ab50a69163147b987d. 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/QZW9M2263478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c315a4966e92f652433529ced7c6c30304fd372d08655aeb843ef109d4e3619. 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/US7VG2530634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209f040900f05cf1f0aaa47dfc8dcc47afea92475db36f1a462b52af1af7287e. 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/US7VG2530635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0989fd421fbe6f593157178506553b0553bf8bb4a7b83238204f8efb8e8f2354. 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/US7VG2530641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd1c78207b0ae630fa7647b98b118ed05bb0e8e13126b1089aba34839299364. 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/BRD642300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd29a467d1f395aa61c2bd1a8ca5888cf1f728a50f66b22b533c80b2d1cb7bec. 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/BRD642300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed23af757aee7fc901108be679ea8704f4d2a1c06f757a3f4329ac754cb59ad. 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/BRD642200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf776eeca02f138cde2d5122861f6d8664c981a741570b6d0764944d61d4b4b66. 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/QZW9M2416523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd29a467d1f395aa61c2bd1a8ca5888cf1f728a50f66b22b533c80b2d1cb7bec. 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/BRD642300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01512fcd1f2c79785052b94ea02720be547ea5d8380c0fff2b5dd2a21a228bc2. 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/BXI8B1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299dfa8221672a0e79f3cd2f5ab188db84d59f1cbb00ba76137dd4bebae8b91c. 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/QZ5AB1920493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e93a3546b3d65342e958c58b1047652e1f072a029f70a18da55897d92b0762. 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/US7VG1725116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f626ec1fe843a92e8235b3f2bcf0661a3639e19c3ce687e698071607feebf5. 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/QZNJZ2221119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1620d7825e94d0ad4ee591144b11c27874b934eab6951e73e1990bc01af81135. 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/QZNJZ2221122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3135968a6ef64fb678c0d2735274fec329e5909945eb745a2979ba1eee31a635. 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/QZNJZ2221126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ad4311998689c8fc4a14971df620a8ac8bcebe6c707c9de390bb0c3eb49601. 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/QZNJZ2221130.
Swing da Bronkka / Apresentação dos Músicos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c887e95dcc3e7233ada7d7a02532a6cc8d82089748f015e2633a7f527d4cc84. 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/QZNJZ2221135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4791b231a10bd2223fdeeb6f5b3a99dfe5ac3f7b8c35fcae67d3ef5d98b00a21. 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/QZNJY2254405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9adda97cfb76c890bbbd891a218b48a845fe46ca06fd22e87b9447f264638c5. 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/QZNJY2254410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341b6068c00d563721ae22141fd8447772845b33d3ec55c3fc64ca7a41007d0d. 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/QZNJY2254412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476a499f12a2e869fe41b5332df576bb28e0b18141065f00f27cafc7cb21e850. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BRTJX2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80f4a7fb3adb929d97fe843aa29bc89cbef825556a006f429ed0d6158b4735b. 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/BRTJX2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe9e55ec67309dce6a12c62ccc97ccb002bb986d6ed8d8d74be8db092c2db46. 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/BCCAU2300023.