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 0xd3189ef5377b1901efe13bfd6af75ea6ffcb53495c95296fa8d08e793a52b815. 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/b722c227-2e53-4222-b054-372092ab47e9.json and https://artists.proofprofile.net/proofs/artist/b722c227-2e53-4222-b054-372092ab47e9.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 0xa137925e7a0892aeb9823077a304c0cddee519e6a85b998ed613b9b39c9ccae4. 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/QZFZ71963910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1d10b6341d59380bb0f92a697035213a761823ff8a92fa9935f8f6b5335888. 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/QZFZ71963911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8fbdb39fb2a32697edc1e974e106e41abd84e26dde64941ae578ec7e2a2ecc. 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/QZFZ71963912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf2d5b4c667dfbc5823b37f18d6861eeedeb1cfc676e9d8a5ec338fb3ea4359. 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/QZFZ71963913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6f7206b94123a26310071aad607d3af7655750c254df5da8209c07f2128a8f. 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/QZFZ71963914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a81b1a546b25abbf6d213aae01ed74f0b9dc19d660cdfdeda3fccfc75fe400. 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/QZFZ71963915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed141e850d36a740ce96c8b2ccfc8b760ee4ece9826d74d30130f2cfab5550a. 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/QZFZ71963916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa3ac6206e07f1d39aea1607cacd6c358deca9198678b83f5e238ec809a1025. 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/QZFZ71963917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521abb47db384c8d48d266757347b35c220d03027b4ed6d9451d6b43aaf2e977. 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/QZNWX2193410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac3eee50d860330c8a071c26345b3ea99aed5201ebbc238e207b30454de87e9. 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/QZFZ42167612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb7e6a55317aeff823ac02489f64a2eea7e9b5d74357e23fa231d237b16a887. 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/QZFZ21922158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470a9048472e8577d16a1dde60de011bee1e69ec6618c121fb64736f47b12aab. 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/QZES71917958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d10a78e6d716dd71567a355b6c92ea1243e58e5612ee54b0d4dd0d973ea723b. 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/QZDA51925084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d23c6d829c32569ac71e730244af6f9a5a9222f4bc33e636a69d7b7a2555a3d. 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/QZES81856902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640b6134c99c8583b868e01370ee5bfc0010e90ad269351bc360bf11b28a0a41. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QM2PV1868256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840e1067b7cd7d18b5e4fc6d849ea87b57200435e4f6c9ee6eb194c4a25f96c2. 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/QMPKX1828198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e31bd339c646915a0dfbdf87d01740eb2e1849c487d16c4443f422b81ce831. 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/QZCE61826519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690993b52af462b10aa0acffd18bb59cc5db714c60f2bb616f577f0c72a9725b. 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/QZBRF1845947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dee75c2989f0a63bf5e4d01a428d04c9d078a650caa0dd4b03d23054a20dc8c. 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/QZBRF1845948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680b4b2c25105cc8eed66d8a5c77e5f4b431518247110be0ab1a7896c13d9329. 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/QZBRF1845949.
Shittrap 4 (Músicas tão boas e irônicas q sei lá manokkk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6922d49147404d9de5a6dca9f5f1b1b3d60829fa3536e80efbbad90103383b. 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/GX38U2150684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489b322d91ef11e72037f0587cb1c58449a912d6c952fce09d020ef7270a2999. 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/GX38U2150685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b252d769f758e4cc45046c45eb008f468306a65b3c74dfd15adaa02f2b3aa3. 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/GX38U2150686.
Trap da Reforma da Previdência Social (Hino do Biroliro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4860ddd7d74ccd5a368ee0fc5fd396cf685dd03c932dea826296c0a34439a6b3. 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/GX38U2150688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb69d20f245e0b47d0cf00443891cc35c4fe7ed553116da22eb2a65261805f18. 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/GX38U2150689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d2fa61162b84536da42d206961cee1b96960729664d9bac652062d2dd4d34a. 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/GX38U2150690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c0f52da0224227f0308b0952c2bd1d969a577e9b5af66d4128658c4fa7885a. 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/QZDA72189859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a503bfe3d0cbf19527c8a8c2fa1a1827d3ee18bf034b5699d3fa37f475f98f. 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/QZNJY2484330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1372a4e7dd0128ffdfd68bfcb896f1c9e1f71e6ea196460ae4c1fffec70834ff. 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/QZ5AB1971816.