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 0xfeefbc50c5fcec262586ad21c047ed12107f9db5b125e13c33dc64424ad35067. 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/85be7745-a8bc-4292-b18e-dbaa14480575.json and https://artists.proofprofile.net/proofs/artist/85be7745-a8bc-4292-b18e-dbaa14480575.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xc626dfd13f1bf08398e803d108d43c193fd3ea7fd0543bc1e9d2de7c68bb6585","isrc":"HUUM72000455","name":"Legszebb Lány","registered_at":"2026-06-18T22:49:36Z","spotify_id":"7fMahhjUbjVoPXyP7Oh47E","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 0xc626dfd13f1bf08398e803d108d43c193fd3ea7fd0543bc1e9d2de7c68bb6585. 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/7fMahhjUbjVoPXyP7Oh47E.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/7fMahhjUbjVoPXyP7Oh47E.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a3e637d4e924d34b078c650afdb70a6270e5beb76bf252c2c61f1ddc7a10ed. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2kEs4dk1Hjk6pay1XLyWFM.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/2kEs4dk1Hjk6pay1XLyWFM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3e66a9d5a0888116266d036815b7daae9213492135ff6757f43bdea9a1c5e1. 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/3vi3q99f6L9uuErG5D7LG8.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/3vi3q99f6L9uuErG5D7LG8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfb913a0342843e8666806d54f5812a4b730e0cf3561b7bc96010c03e220b9f. 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/03IE76SATvUVkImgdW1OQy.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/03IE76SATvUVkImgdW1OQy.
{"copyright_id":"0x9111733bef9f27b111a2fa7a6ec38f88d0bb180031277df038d9ebafdc8680ec","isrc":"HUA612300799","name":"hercegnőflow - mi lesz velem herceg?","registered_at":"2026-06-08T06:26:30Z","spotify_id":"4l1BVTnnwbugSQVtC7Oeoz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9111733bef9f27b111a2fa7a6ec38f88d0bb180031277df038d9ebafdc8680ec. 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/4l1BVTnnwbugSQVtC7Oeoz.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/4l1BVTnnwbugSQVtC7Oeoz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b1989fed4f9df73c79c8a2a81119a10ae5b029731475a3667c46576bf5fbf4. 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/3UvHS2CTD15vbamvARshbu.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/3UvHS2CTD15vbamvARshbu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a3e637d4e924d34b078c650afdb70a6270e5beb76bf252c2c61f1ddc7a10ed. 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/6fkMv9TyaEKFt1hACqdYHS.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/6fkMv9TyaEKFt1hACqdYHS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159af9a2fe585f6dd5a36e22a654011f77c5583199084845b09db595974d0365. 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/5C5s9x0C9OUsoLnjlHpcJn.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/5C5s9x0C9OUsoLnjlHpcJn.
{"copyright_id":"0x898146b833436e9a476fd72c9d67504472ff8cb57206dcc6cc434e73bd8c7782","isrc":"HUA612300996","name":"túróscsusza - ilyen felnőtté válni?","registered_at":"2026-06-07T16:04:43Z","spotify_id":"7DB7FSM7W8rXCmNKDxFyh7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898146b833436e9a476fd72c9d67504472ff8cb57206dcc6cc434e73bd8c7782. 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/7DB7FSM7W8rXCmNKDxFyh7.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/7DB7FSM7W8rXCmNKDxFyh7.
{"copyright_id":"0x3362ef0dab5381ef9fdebdff9a2228904c9a9681e34770ac5a3a69782dce7b61","isrc":"HUA612300997","name":"utolsó falat","registered_at":"2026-06-22T11:21:16Z","spotify_id":"1kMjIEMCEplx1yr4ekBz5D","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3362ef0dab5381ef9fdebdff9a2228904c9a9681e34770ac5a3a69782dce7b61. 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/1kMjIEMCEplx1yr4ekBz5D.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/1kMjIEMCEplx1yr4ekBz5D.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7652744f921f25f878638cecff9363920296f21a1045b8ed2cef446262a88bf4. 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/3uuWCd2nI2TxaRoMEMFe67.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/3uuWCd2nI2TxaRoMEMFe67.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebd285a6f560c69fa4149d38f0441797d2d3866caf80b97a41a9d90a1dfbf6b. 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/0aIf1rDz3fUVmCG9XqSola.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/0aIf1rDz3fUVmCG9XqSola.
{"copyright_id":"0x85c0276a028bf1bc1bed1aac265c63b3a2fe588c73c9ff369a75daad191e1c44","isrc":"HUA612401466","name":"Tarts meg!","registered_at":"2026-06-09T05:34:09Z","spotify_id":"3Tog1lSGBiDuZFXm55RaRj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c0276a028bf1bc1bed1aac265c63b3a2fe588c73c9ff369a75daad191e1c44. 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/3Tog1lSGBiDuZFXm55RaRj.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/3Tog1lSGBiDuZFXm55RaRj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3118e3a0d2301a7a286fe613b7486b0dfc9f2776d4c7c5224dc0806c3eb01d86. 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/2IuuQIZz68geNqVXasZrDY.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/2IuuQIZz68geNqVXasZrDY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc642239c5f8961ef9a51b03bbd342e15da6bd7d9d40479ad25485d0976504c1f. 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/45D2eYiMaCKXGBIaDdepqV.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/45D2eYiMaCKXGBIaDdepqV.
{"copyright_id":"0x46b1ff55a87693c35f6c1df302245cb6ad7edc2ceb745f266bf26e86fa01ed6e","isrc":"HUA612401467","name":"Minden kislány","registered_at":"2026-06-08T15:10:24Z","spotify_id":"5fdhLGApWJV9V6GVE6F9Zf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b1ff55a87693c35f6c1df302245cb6ad7edc2ceb745f266bf26e86fa01ed6e. 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/5fdhLGApWJV9V6GVE6F9Zf.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/5fdhLGApWJV9V6GVE6F9Zf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666236d49338a9655c13cd4d1a4608729d82cb3daf88d6713b9013487492fc1d. 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/56niZvChCCOKFMOV7h0XpZ.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/56niZvChCCOKFMOV7h0XpZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2231903e10b7e79a267608522bb3b99adb06be28d33bc225542b56774cf676fa. 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/7deyFlDY4zLfUqevNOUDOL.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/7deyFlDY4zLfUqevNOUDOL.
{"copyright_id":"0x129d5827d24d5953527fa60eeaa77e795f7e99e07f1fa45df9fdd319b84be424","isrc":"FRX872424490","name":"Átkozott - Lazerpunk Remix","registered_at":"2026-06-22T07:00:39Z","spotify_id":"29mupk2MHhUENknJtdUZc3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129d5827d24d5953527fa60eeaa77e795f7e99e07f1fa45df9fdd319b84be424. 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/29mupk2MHhUENknJtdUZc3.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/29mupk2MHhUENknJtdUZc3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7649945d9eb1bd240754e0865f34df071c188e2d6334e2e6a321c48684521d57. 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/71kfMOJG7PPlJiyWbwKZxm.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/71kfMOJG7PPlJiyWbwKZxm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba11c59d40e0b930660f8700dc0f7c155f0f8bb4ae3a3483c34c47e88a06929. 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/33VkERt5mIWWbx2ZvVbXSx.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/33VkERt5mIWWbx2ZvVbXSx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587296556d7eef3f178e771afabcc867e8a00ca5084d2e4a55a6ac91993466dc. 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/4Os68ICIOhJVOPfl53TjBP.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/4Os68ICIOhJVOPfl53TjBP.