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 0x8bc01964ed6dcb0af39b37b4b4f531cff214938f3de07924d3a420abb69eb576. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b7165c6-b7ad-4144-bad9-2ed6fef46d0a.json and https://artists.proofprofile.net/proofs/artist/6b7165c6-b7ad-4144-bad9-2ed6fef46d0a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x91d4f440d38c94c14e65464eb49e9d22d0e27171e3d3049459f7d95db2f3e05f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6Pkg8kUYm6Fo0NIoAg9EpE.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/6Pkg8kUYm6Fo0NIoAg9EpE.
DJ Skype e MC Dornelas Os PitBull Do Eletro Funk
{"copyright_id":"0xfa307c8537a9193dc3cf2edd324829f5c90c64bae6b7d8b323b1e10279d846e8","isrc":"BX4IU2316480","name":"É Tudo Puta (DJ SKYPE REMIX)","registered_at":"2026-06-04T16:32:13Z","spotify_id":"5QSIGQO51hb9EodZyJwOSm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa307c8537a9193dc3cf2edd324829f5c90c64bae6b7d8b323b1e10279d846e8. 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/5QSIGQO51hb9EodZyJwOSm.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/5QSIGQO51hb9EodZyJwOSm.
{"copyright_id":"0x905f78729a8b2571bb06c1d2d0d3cb8f9be90b1210d99a1417a39a3bc21c874c","isrc":"BX4IU2340831","name":"É Nois que é o Corre","registered_at":"2026-06-04T11:21:15Z","spotify_id":"4aQl6xcgDGvG3uvHPz4swa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905f78729a8b2571bb06c1d2d0d3cb8f9be90b1210d99a1417a39a3bc21c874c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4aQl6xcgDGvG3uvHPz4swa.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/4aQl6xcgDGvG3uvHPz4swa.
{"copyright_id":"0x5d7abc938ad88e9de2022d4ae44b7369924ac24f1e6a71d7aceafa38702c86e3","isrc":"US3DF2401058","name":"ORQUESTRA DO DESANDE","registered_at":"2026-06-10T17:33:54Z","spotify_id":"7zPvsdZ1LqVipSXpftRwHC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7abc938ad88e9de2022d4ae44b7369924ac24f1e6a71d7aceafa38702c86e3. 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/7zPvsdZ1LqVipSXpftRwHC.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/7zPvsdZ1LqVipSXpftRwHC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f0e3b0e6521063402b061f18d25347b7f698e9d96d13ab2fc7b1dabbb44c19. 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/3gVB0dt6z2cyMH4Bk2d2Mr.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/3gVB0dt6z2cyMH4Bk2d2Mr.
{"copyright_id":"0xad030f8b9cb04c8c9e09f3220f68adcbb4d1c40a1e901423855486acdca17ccc","isrc":"US3DF2415494","name":"DESANDE DO SENTA","registered_at":"2026-06-08T12:18:41Z","spotify_id":"4AGIRELPkH6J4pxDhNPxc0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad030f8b9cb04c8c9e09f3220f68adcbb4d1c40a1e901423855486acdca17ccc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4AGIRELPkH6J4pxDhNPxc0.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/4AGIRELPkH6J4pxDhNPxc0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8bfaeba9fadff83cb118a16b4e121d07b5d2c467e243fc6e24fc54805cc809. 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/4aZ4zCLYHSaAO8K1zbhucJ.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/4aZ4zCLYHSaAO8K1zbhucJ.
{"copyright_id":"0xd965f27655235f3fda980adb055f6ba4daaed56c3055a0ec018edbcc676bd267","isrc":"US3DF2473959","name":"ARRAIÁ DO SERRÃO (ELETROFUNK)","registered_at":"2026-06-10T01:06:52Z","spotify_id":"3LKE8vIM30KVJM8tSFrnsB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd965f27655235f3fda980adb055f6ba4daaed56c3055a0ec018edbcc676bd267. 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/3LKE8vIM30KVJM8tSFrnsB.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/3LKE8vIM30KVJM8tSFrnsB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cc4904f62a812ae5ef8b3581c2974b1a8de0987c6364e5676291770b385d7c. 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/5PHkZnzzZdxKLVW5OuNai5.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/5PHkZnzzZdxKLVW5OuNai5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a67009107e9ddb087ae8c5ce08f18d78a852e9f00910c8ec9d8c0c7932eea6. 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/5uZTCXlwRiTQWtYt0q1WMk.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/5uZTCXlwRiTQWtYt0q1WMk.
{"copyright_id":"0xfced73cdcc2cd4ea3b79a922f4412b41f3231f2519bc8c8d01576006cf28fda0","isrc":"BKSAI2300187","name":"Galera de Cowboy","registered_at":"2026-06-05T04:42:28Z","spotify_id":"1coDNHU03ehGI2AdYV4l0a","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfced73cdcc2cd4ea3b79a922f4412b41f3231f2519bc8c8d01576006cf28fda0. 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/1coDNHU03ehGI2AdYV4l0a.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/1coDNHU03ehGI2AdYV4l0a.
{"copyright_id":"0x7b501c68a44842a4d315f2b2ad56f40b0a544ab7bdbb62eaf4eba8050c2748df","isrc":"US3DF2460368","name":"TREME A BUNDA DELA","registered_at":"2026-06-09T08:30:25Z","spotify_id":"4iJUG5rtETxA2o66EoINv7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b501c68a44842a4d315f2b2ad56f40b0a544ab7bdbb62eaf4eba8050c2748df. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4iJUG5rtETxA2o66EoINv7.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/4iJUG5rtETxA2o66EoINv7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f9c968feaa6ac88bacb8ad7abc26c590aa5f6393ba45b6c3d9253421281404. 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/4y4PumT5mx0GZJiJ0zdRa0.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/4y4PumT5mx0GZJiJ0zdRa0.