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 0xd2ee9943f333904fd18252ee8c6963e66df185b613eccb8c01f8dddd7c380624. 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/da8d2e6a-a4f5-4d65-adb7-08bf376e4c46.json and https://artists.proofprofile.net/proofs/artist/da8d2e6a-a4f5-4d65-adb7-08bf376e4c46.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 0x2bfca2dbba66e8de0dc445c1fd0726f8230ba6d26e127af34814268b6cf712cf. 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/BCA2A2300285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9518b77063591aabe3a50895c1b278e6faf9e47f15d670ea64e840472cbd893. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BCA2A2400217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018e47a95775986188a3a8c9177dab07a2d224df156ee97a931515f0bd377dbf. 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/BXVK62400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa085a43b16425174c8d4a8b6aeaf7192f908633dfa0137c9fba659d1b05e4a45. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BCA2A2400185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa599d0003c5dd601ad885143a4aa983abf878be0c6f8b88f9acdd03b109cbfa0. 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/BCA2A2400244.
Splish Splash – Foi o Beijo Que Eu Dei (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0823914f9cc5f5c5a4beb54139bd501e8a7a751bb9db72aeb1c1dd5eafb7a08d. 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/BKSAI2400154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fafca17e7713836e08e7fe80f543f06f3f3370bf3b1638bae9ec8b3541ce91. 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/QZWV32410275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed874d545783e3b103e269076d8f5ad388ea06abb629d13e5280879440402fae. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BCA2A2400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5487937844ff88dcfc6bd2a9369fa78a3f7192f5a3dc66996c5ca1bfb3915db1. 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/BCA2A2500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f1069b7bc7412346f810a37e601fdd6e9a42e233bad36ebcff944b2e430c6a. 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/BCA2A2400597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3174c66e2b1aba80a15f3e55c6beff8559107d2175933848b44b03c250652600. 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/BCA2A2400527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7f5c77c1d1f9d908893047bec0631af8e3d07c286330b980c1846e9bfb6eb5. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BCA2A2400184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f19bbdd563fd082c272225ef5887e014ade3e12993629bac353b593f32e0aa. 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/BKTKU2500233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee8ada6df4d4805166bcc2bec470bfb3da40ecacf6005a8b9ad5d88a595abe8. 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/BCA2A2500151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3219897293a3fb09ba774a67446dc762c43bd73aac52b0aeff9c4d4f74c567a4. 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/BCA2A2500144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36daac86e117df9805e689bf933341aa7b6b6b2993adcd8be2352af348e39521. 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/BCA2A2500123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5eb7b37a83d201c9599b5a49136adbf9b68a747444c5be34fc78bd6e07a9141. 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/BCA2A2500074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c171cd1fb65163ed9188bd445dcf7cedcfae5078182065041b0c3e3b99c4d24. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BCA2A2401069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bdfe8af9c727a2824935a6eb60f440965feebf74116d476c8fe94fa06c7111. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/BCA2A2401001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e0d33f56e5086bf1f05aa3e984e684c6776591bd9d36191b411831d902f28e. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BCA2A2400943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f6db891c826c97a3909a28ad7ed1d848d68dbd57196657764608fcea90b249. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BCA2A2400934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d50f8974da3a39825633094edef4cad7f57a412484d493aa4b22d2a30c71266. 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/BCA2A2400901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2660b63457376c85f356ee4ea1b06ecbce61e9fe2d8098a73cbe165e22d9f8e. 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/BRS4R2400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941811a8e00cad66caa77005f2414596118918cddf2f1016b3dd189a60c5badc. 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/BCA2A2400778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8ac642fe764c655fc11ba9cb8100ada67a5caa6e2d80a3a00e53c58c6c6d88. 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/QZWV32455540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddacfdc5687aec0fc990b1df6bbca666e1e8a66600ec0d6bd63dd51f6644a73c. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/BCA2A2400245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956ed66aa50242e05e2dc2007cf258fa732e7e913128b2583a3f110994d47dbb. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BCA2A2400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabec1dd96d161aa7a78ec17e3832e0eb1a1498f03cda1882c851216ed4e37a3. 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/BCA2A2400169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e0f44b0d92081cd620168ec195508eea8073cd8a243e1e6594c9b94bc7a2a3. 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/BCA2A2400171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b677a291ff6d93246be89ca26a694b617c8eff6fc824c4427a27d0135b7e9b. 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/QZZEC2302327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826cb80bf7816de03bcae409035ebd709bef9d85e3a5469554ba3ec06bdd16c7. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QM4TW2324182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd32400d35726b20909a3c5dad4a46b78ee83586e7c1bf38028db237bf3e2ef. 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/QM4TW2328154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a237030b0c2f685f613941599143a26ed21beda4230525b36f8b98035bf030. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BXVK62300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed56c542449e3ba7f879b8e9d2c2b058a539f10718e045565cb9e875acca26a2. 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/BCA2A2300345.