1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x594390689958f75dde27dda7cc37fc2280f59bc60dcf8450b3741f9fb8edc8b8. 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/a60dd435-4e0c-4f24-928e-8efb1ef45f11.json and https://artists.proofprofile.net/proofs/artist/a60dd435-4e0c-4f24-928e-8efb1ef45f11.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x51b7b3eeb29739775760e133dff5205164bc59f661c3ec36e92aac816f979d94","isrc":"BCIH82202800","name":"Montagem Orquestra Sinfônica","registered_at":"2026-06-01T22:58:36Z","spotify_id":"6IptkpsuIYGFtR16DaHVwC","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b7b3eeb29739775760e133dff5205164bc59f661c3ec36e92aac816f979d94. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6IptkpsuIYGFtR16DaHVwC.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6IptkpsuIYGFtR16DaHVwC.
{"copyright_id":"0x6ffadfabf0013015e751f6ed3934fc91174f04aaef2dd2eadc906b20428cb575","isrc":"QZGLS2415241","name":"Você Merece Ser Patrocinada","registered_at":"2026-06-25T21:08:47Z","spotify_id":"6AMLZQZfHXly0nGuh8kTAa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffadfabf0013015e751f6ed3934fc91174f04aaef2dd2eadc906b20428cb575. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6AMLZQZfHXly0nGuh8kTAa.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6AMLZQZfHXly0nGuh8kTAa.
{"copyright_id":"0x66b78b175f10e5ae67c8e091bf2383712e2fd5c316a510904b972998dae53673","isrc":"BKFUX2301592","name":"Eu Viro a Cara e Passo a Vara","registered_at":"2026-06-20T06:21:22Z","spotify_id":"7tYDbMPj1mOSOdf0YJtzRF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b78b175f10e5ae67c8e091bf2383712e2fd5c316a510904b972998dae53673. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7tYDbMPj1mOSOdf0YJtzRF.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7tYDbMPj1mOSOdf0YJtzRF.
{"copyright_id":"0xe89aff0736489e6f6ef62ce0cca9d88ccc461b55692d7886f7324fb27af1e88c","isrc":"BC1U32200415","name":"AUTOMOTIVO DO BARULINHO","registered_at":"2026-06-25T15:59:34Z","spotify_id":"5MtG254T6S3lR5R0xQE9XW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89aff0736489e6f6ef62ce0cca9d88ccc461b55692d7886f7324fb27af1e88c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5MtG254T6S3lR5R0xQE9XW.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5MtG254T6S3lR5R0xQE9XW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254cc53f0ed6c267e5825b06a444808a667721299252d9ceebd9f5c9d999b163. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3lC3alB5xWeuM2IIHGiocP.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3lC3alB5xWeuM2IIHGiocP.
{"copyright_id":"0x385ed174c36e0c16df442ba09bf1e6d8c36c83d82002f92a7286dea8bd144698","isrc":"BC1U32200427","name":"HISTÓRIA DE SEQUESTRO","registered_at":"2026-06-26T17:39:05Z","spotify_id":"05STPNE0JDmTu7wsmeXcQX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385ed174c36e0c16df442ba09bf1e6d8c36c83d82002f92a7286dea8bd144698. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/05STPNE0JDmTu7wsmeXcQX.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/05STPNE0JDmTu7wsmeXcQX.
{"copyright_id":"0x11eab54e4faa42d8f75bda8705fd71d7b0aad48d495a95ab37723c5796c5f0f3","isrc":"BC1U32200438","name":"VENENO DE SERPIENTE AUTOMOTIVO","registered_at":"2026-06-20T21:45:16Z","spotify_id":"3EiNFxh1ftem0uAXy2Pdoi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11eab54e4faa42d8f75bda8705fd71d7b0aad48d495a95ab37723c5796c5f0f3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3EiNFxh1ftem0uAXy2Pdoi.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3EiNFxh1ftem0uAXy2Pdoi.
{"copyright_id":"0x6a85fd0187446a4ec35d7528bcf54d62c9e8b6a4283c55575ddff2bd3eb62990","isrc":"BCE7P2401543","name":"Terror Oriental","registered_at":"2026-06-04T15:13:15Z","spotify_id":"4PG8ldWUk4tygz3aARUlhR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a85fd0187446a4ec35d7528bcf54d62c9e8b6a4283c55575ddff2bd3eb62990. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4PG8ldWUk4tygz3aARUlhR.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4PG8ldWUk4tygz3aARUlhR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9cb826695b5f597a466bdb8204cffa26630f903c170854e342169730b26cc0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3Z3ucXGdzT7f0ntSdJ9trB.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3Z3ucXGdzT7f0ntSdJ9trB.
{"copyright_id":"0x0d3ca2b65087f4ce32e566abbc4fa56a2b1926f3b0c061bafb20ba0dd132e478","isrc":"QZNJV2461897","name":"Montagem Hino da Destruição","registered_at":"2026-06-07T07:35:40Z","spotify_id":"7lS6zUNgFXNj7aH4zSlax8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3ca2b65087f4ce32e566abbc4fa56a2b1926f3b0c061bafb20ba0dd132e478. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7lS6zUNgFXNj7aH4zSlax8.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7lS6zUNgFXNj7aH4zSlax8.
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