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 0x42a85f6656acd34b9bfec525a571b602ee9abe93d904bc7407ea5a132d9facac. 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/c4504397-1f30-4d69-a1bb-216b17a178f8.json and https://artists.proofprofile.net/proofs/artist/c4504397-1f30-4d69-a1bb-216b17a178f8.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 0x403536e02c9548a9dbcb538feeaa433cfb8f534c374afc4729479407ba8f4a04. 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/3SzqIqAz6EC4Gi8FmW1I4j.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/3SzqIqAz6EC4Gi8FmW1I4j.
{"copyright_id":"0x37024bb86998afdab299854dcc04dd6af58f15893e859f943e556c183961784a","isrc":"DEEQ80900053","name":"Pretty Belinda Schlauchboot","registered_at":"2026-06-04T11:06:59Z","spotify_id":"1XMaCb2dtzJ79evyclfhaA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37024bb86998afdab299854dcc04dd6af58f15893e859f943e556c183961784a. 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/1XMaCb2dtzJ79evyclfhaA.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/1XMaCb2dtzJ79evyclfhaA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1d71e26ba030abce0b5d78800c461799458dbccb21a98764ffdc283d732a21. 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/1X0XcqGaofdhLpIY6ljXKP.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/1X0XcqGaofdhLpIY6ljXKP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3d912d59d913c392dcb91150676586fe379ec6101157f5cde1587eb9fe19ee. 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/3ABq3dzBSq65zqxuKnRYmk.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/3ABq3dzBSq65zqxuKnRYmk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60b21353a204060c71a9baea6c7143092591e1a24ea9663be5b0165d47f18ed. 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/3M7LYY36B7ArmACz5NZtOM.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/3M7LYY36B7ArmACz5NZtOM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b4c57a2981c736fc01d656861b52541c3cd5db9886b97847a404be619c08df. 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/2ZeepioWsf2CMt6uZ8gOUC.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/2ZeepioWsf2CMt6uZ8gOUC.
{"copyright_id":"0x8479161a5b0fa72df99ddeb2b8b526798f34a82b6ab76a4ff79fc5f3b71dffc3","isrc":"DEEQ80600009","name":"Die Ina","registered_at":"2026-06-27T13:53:25Z","spotify_id":"0SonBICY0i5vooRtaAi2ab","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8479161a5b0fa72df99ddeb2b8b526798f34a82b6ab76a4ff79fc5f3b71dffc3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0SonBICY0i5vooRtaAi2ab.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/0SonBICY0i5vooRtaAi2ab.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10f534093e83ae4a570ca0f0e6774ebcc3f93c74df91466604d74a3cea706a8. 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/4DESqVp3UlkTq6k9No2sUa.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/4DESqVp3UlkTq6k9No2sUa.
{"copyright_id":"0xabc96077c72a7bdd9c517733b3bb110499e06ec5ab6eb84ccfd3a462c46731b9","isrc":"DEEQ80800059","name":"Eine Weiße Rose","registered_at":"2026-06-08T21:51:43Z","spotify_id":"52eqBJDEx57uQSVtSUp5TS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc96077c72a7bdd9c517733b3bb110499e06ec5ab6eb84ccfd3a462c46731b9. 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/52eqBJDEx57uQSVtSUp5TS.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/52eqBJDEx57uQSVtSUp5TS.
{"copyright_id":"0xd9c62be58652a751865cc046eaaee123ad7f658245d0dfd4d684423b5e2804f8","isrc":"DEEQ81100048","name":"Pretty Belinda / Skilift - Jagertee Mix","registered_at":"2026-06-05T12:54:16Z","spotify_id":"4VOBnHTd4kZWq91IMAVTw1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c62be58652a751865cc046eaaee123ad7f658245d0dfd4d684423b5e2804f8. 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/4VOBnHTd4kZWq91IMAVTw1.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/4VOBnHTd4kZWq91IMAVTw1.
{"copyright_id":"0x10790dd6cfbd606b5cf6ea0aa22b1c9a7b8d9a428c4711b29d3e4e18553bf040","isrc":"DEEQ81000030","name":"Tausendmal Du - Duett mit Marry","registered_at":"2026-06-23T23:03:17Z","spotify_id":"2DEu0gbC5FAkeSh17UQwu7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10790dd6cfbd606b5cf6ea0aa22b1c9a7b8d9a428c4711b29d3e4e18553bf040. 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/2DEu0gbC5FAkeSh17UQwu7.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/2DEu0gbC5FAkeSh17UQwu7.
{"copyright_id":"0x8c0e9f3f1ec5e9df7b79daa7fba72996ffb8b45e5a678a306fbd7a8a7bd379da","isrc":"DEEQ81700163","name":"Helikopter 117 (Mach' den Hub Hub Hub)","registered_at":"2026-06-04T10:14:05Z","spotify_id":"0I61JzCfmdDBz97IeFBGvy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0e9f3f1ec5e9df7b79daa7fba72996ffb8b45e5a678a306fbd7a8a7bd379da. 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/0I61JzCfmdDBz97IeFBGvy.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/0I61JzCfmdDBz97IeFBGvy.
Cordula Grün (Ich hab' Dich tanzen gesehen)
{"copyright_id":"0xcb14c769ee27ee16c5a34ed9b9cd81906f48c5243736db1f85079216da1910d7","isrc":"DEEQ81800134","name":"Cordula Grün (Ich hab' Dich tanzen gesehen)","registered_at":"2026-06-09T10:56:52Z","spotify_id":"5p72jZxWouRGRrNJawy2d3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb14c769ee27ee16c5a34ed9b9cd81906f48c5243736db1f85079216da1910d7. 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/5p72jZxWouRGRrNJawy2d3.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/5p72jZxWouRGRrNJawy2d3.
Aua im Kopf (Morgen sind wir schlauer...)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe887193f2e2845a1392eff7596859721961b9e882a7345909ea9f2d69b39a0e1. 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/23rbw2P1f3ZyOPDwz8ljWZ.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/23rbw2P1f3ZyOPDwz8ljWZ.
Heute schütte ich mich zu (Mit Gefühl - Schubidu)
{"copyright_id":"0xd1929d37b0768f7fb22e62291b658bae4a067e4d1b553c9d29a5a2301ffbd84d","isrc":"DEEQ81800088","name":"Can You English Please?","registered_at":"2026-06-05T12:51:44Z","spotify_id":"0APVxX7tEMSG2VJJpwHfls","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1929d37b0768f7fb22e62291b658bae4a067e4d1b553c9d29a5a2301ffbd84d. 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/0APVxX7tEMSG2VJJpwHfls.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/0APVxX7tEMSG2VJJpwHfls.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a509e1b9a39358e465f431ed6157416244fcaf81d037055af671590a596900e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5QJ4OGQVuM6BnCUneF2ZuR.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/5QJ4OGQVuM6BnCUneF2ZuR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88268f8c3fa1a807e5883030e7a14f275a63fa4d70865bb8aba0607dbe17592. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2gAQC45te5Lupx6aYF34w9.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/2gAQC45te5Lupx6aYF34w9.
Ab jetzt wird morgen Scheisse - Party-Version
{"copyright_id":"0x7e69a96c0b41ad932292444e3411cc947bb9c87cec250bcd61183f38023a0e4e","isrc":"DEEQ81700012","name":"Ab jetzt wird morgen Scheisse - Party-Version","registered_at":"2026-06-24T20:21:03Z","spotify_id":"4fg0dbo7PwlJHI8QFTAM8s","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e69a96c0b41ad932292444e3411cc947bb9c87cec250bcd61183f38023a0e4e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4fg0dbo7PwlJHI8QFTAM8s.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/4fg0dbo7PwlJHI8QFTAM8s.
{"copyright_id":"0x29a23aae6f64b13e2320d81b6f6a0c790e77bd4eb0504ca9a6cd2f2109e68758","isrc":"DEEQ81600133","name":"3 Promille (Doch da geht noch was)","registered_at":"2026-06-19T16:27:47Z","spotify_id":"6sGviuFAPiVayLYhIRZkJ0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a23aae6f64b13e2320d81b6f6a0c790e77bd4eb0504ca9a6cd2f2109e68758. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6sGviuFAPiVayLYhIRZkJ0.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/6sGviuFAPiVayLYhIRZkJ0.
Rosalie (Bei Dir komm' ich nicht zum schlafen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60b21353a204060c71a9baea6c7143092591e1a24ea9663be5b0165d47f18ed. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6WHX342JfUBdphDH7FNvUN.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/6WHX342JfUBdphDH7FNvUN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b4c57a2981c736fc01d656861b52541c3cd5db9886b97847a404be619c08df. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3B2t7eEwQSZKLD4LHcvUON.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/3B2t7eEwQSZKLD4LHcvUON.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb786517f59941e6bfa404ee4318168c813d02e4956669a3a8c5ca47f301a8762. 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/1pMsWnQCaLQvL3O0vaMp5H.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/1pMsWnQCaLQvL3O0vaMp5H.
Best Of Oktoberfest 2022 powered by Xtreme Sound
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b20564e29552e0110bca3b5bdc78688908e0c5e926c74c202d5620ffb9db54. 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/2xN5TSF6h8KjakCvhA2nZQ.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/2xN5TSF6h8KjakCvhA2nZQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33e150a77639f2953ea76411ada96fda7b674693b49219fad5376e98e7d8f87. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1eNIzTZSw38X5pCm30lwSE.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/1eNIzTZSw38X5pCm30lwSE.
Ballermann Ski Hits Top 100 2022: Der ultimative Party Megamix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1d71e26ba030abce0b5d78800c461799458dbccb21a98764ffdc283d732a21. 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/6L5sp2rXIvoTHktQgHIywL.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/6L5sp2rXIvoTHktQgHIywL.
{"copyright_id":"0x2d2f5aab7ae84c8a2d7547748589985b2f62154ce30d166865fff187cb4c6f26","isrc":"DEEQ82100025","name":"Hey Bobby (Richtig einen brennen)","registered_at":"2026-06-19T16:30:07Z","spotify_id":"6Rs9rts5D0gdK4Ag1M8E0o","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2f5aab7ae84c8a2d7547748589985b2f62154ce30d166865fff187cb4c6f26. 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/6Rs9rts5D0gdK4Ag1M8E0o.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/6Rs9rts5D0gdK4Ag1M8E0o.