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 0x76d12fb06b7d8b0f4a1800e63bae9981f073efbe28483ae4d4ba6a605156fe11. 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/ff0010be-7971-4db0-aeff-3bf070b7a03e.json and https://artists.proofprofile.net/proofs/artist/ff0010be-7971-4db0-aeff-3bf070b7a03e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x1150bb082635a6df1e1a268ee018c8c99a2e35b0556ead948ac9155fd0a5062c","isrc":"QZES61844110","name":"Fear the Wrath of God","registered_at":"2026-06-21T12:19:58Z","spotify_id":"6PRqZw8FjaEU2KaNlkDaQG","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 0x1150bb082635a6df1e1a268ee018c8c99a2e35b0556ead948ac9155fd0a5062c. 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/6PRqZw8FjaEU2KaNlkDaQG.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/6PRqZw8FjaEU2KaNlkDaQG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b2d4ef201908d0c69040168e12648138b34731f34ec41fd954cdb386c367ed. 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/4F8UlPvgPOIRplL4Xqm23q.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/4F8UlPvgPOIRplL4Xqm23q.
{"copyright_id":"0xe56c334e85c060b662777b1ef4995bb56851cfafd4fcd6eeaa84ea3122854064","isrc":"QZES61844112","name":"Death Dreams","registered_at":"2026-06-25T12:05:30Z","spotify_id":"2yoMUoYSTsBrpyW1qwTSKH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56c334e85c060b662777b1ef4995bb56851cfafd4fcd6eeaa84ea3122854064. 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/2yoMUoYSTsBrpyW1qwTSKH.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/2yoMUoYSTsBrpyW1qwTSKH.
{"copyright_id":"0x201d3a3c43be2b95ef26f2ad758be09bc64383405d0ef6125dd24d76150258c1","isrc":"QZES61844113","name":"Legends Never Die","registered_at":"2026-06-08T21:58:50Z","spotify_id":"5btgXxWGEJThygasIrFwNg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201d3a3c43be2b95ef26f2ad758be09bc64383405d0ef6125dd24d76150258c1. 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/5btgXxWGEJThygasIrFwNg.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/5btgXxWGEJThygasIrFwNg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c4a79745d0ea62ba396ac03d51011dc20bf935e56b2030ed8a42b7d6e30a66. 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/0eaNyW4Ui07iv21Gq024Er.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/0eaNyW4Ui07iv21Gq024Er.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d88f1d375614e4818236a78fc67acea675ebd01c71ede152b0081617874c95. 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/5Wso4FqR2daGiKzt1UaP7q.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/5Wso4FqR2daGiKzt1UaP7q.
{"copyright_id":"0x5ba52c2d8fadc5fd95def4ce0014e02e2e6bd16b3b50754b8c4973400b51e2fe","isrc":"QZES61844117","name":"Everybody Knows","registered_at":"2026-06-25T12:06:35Z","spotify_id":"5Np4wGLlqtYi6fOQ2tVWti","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba52c2d8fadc5fd95def4ce0014e02e2e6bd16b3b50754b8c4973400b51e2fe. 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/5Np4wGLlqtYi6fOQ2tVWti.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/5Np4wGLlqtYi6fOQ2tVWti.
{"copyright_id":"0x73d3abd8587babe26011906e0d7bff1ba2504af721e1dabbee82ca2174972b6e","isrc":"QZES61844121","name":"Ignorance I","registered_at":"2026-06-18T20:37:12Z","spotify_id":"5lqoSHykVeAjddPXTGZSMd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d3abd8587babe26011906e0d7bff1ba2504af721e1dabbee82ca2174972b6e. 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/5lqoSHykVeAjddPXTGZSMd.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/5lqoSHykVeAjddPXTGZSMd.
{"copyright_id":"0x1cacd9e54dde497e690a3fdd6b09ea01daa11dbdd1770b93d57df6818a862cc6","isrc":"QZES61844122","name":"Ignorance II","registered_at":"2026-06-18T20:37:18Z","spotify_id":"7D70tiORAMJrUXVGf4OyPI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cacd9e54dde497e690a3fdd6b09ea01daa11dbdd1770b93d57df6818a862cc6. 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/7D70tiORAMJrUXVGf4OyPI.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/7D70tiORAMJrUXVGf4OyPI.
{"copyright_id":"0xef39fddb19c8999d40a9a6ede8513a6452bf0bb6f7717448ed5527a6d3b0c67a","isrc":"QZES61844123","name":"Do You Want to Taste the Blade","registered_at":"2026-06-25T12:05:51Z","spotify_id":"0AJL9bG5n2SdyRPxh8fNjt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef39fddb19c8999d40a9a6ede8513a6452bf0bb6f7717448ed5527a6d3b0c67a. 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/0AJL9bG5n2SdyRPxh8fNjt.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/0AJL9bG5n2SdyRPxh8fNjt.
{"copyright_id":"0xd03ffdcfbf5c2de0acc2a9e5ce7c40e562c7811d053207976ef9039ec99c29b9","isrc":"QZES61844124","name":"Its Not Love","registered_at":"2026-06-09T20:17:02Z","spotify_id":"2yHowQ2y8xnSZk3R8vrLaW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03ffdcfbf5c2de0acc2a9e5ce7c40e562c7811d053207976ef9039ec99c29b9. 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/2yHowQ2y8xnSZk3R8vrLaW.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/2yHowQ2y8xnSZk3R8vrLaW.
{"copyright_id":"0x365f3eba6dbc0cc160644a801ac013345ef29f77cf281dc40aa58a0f00d18bb1","isrc":"QZHN92257785","name":"BEFORE I FALL","registered_at":"2026-06-22T11:22:42Z","spotify_id":"3H1YHxp4tgfIU0IyQkL1Nk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365f3eba6dbc0cc160644a801ac013345ef29f77cf281dc40aa58a0f00d18bb1. 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/3H1YHxp4tgfIU0IyQkL1Nk.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/3H1YHxp4tgfIU0IyQkL1Nk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e046b4b21476f62716a060994ed217f73280d7e599835ffabf98972f75c38da. 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/3hZqtGf6N6Vk11E5Lplecm.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/3hZqtGf6N6Vk11E5Lplecm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0825f3bbb4b65222455de09059edb6d9c23b2a1f865e923843af14193aa5b2. 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/1GLQSsPoIPWjXvNivd1UfA.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/1GLQSsPoIPWjXvNivd1UfA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e11058932beb2627094b0c3a4b8dc62e52e6f9f3e0975a671da0e6bab350e0. 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/24BEC2R1yXLQY59ryQCjAF.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/24BEC2R1yXLQY59ryQCjAF.
{"copyright_id":"0xd6dbbfb9d0203430b10025e9be0e1e4078abdb9169881db07a03c9adddfe2771","isrc":"QZES92190294","name":"House Of Glass","registered_at":"2026-06-07T23:01:14Z","spotify_id":"3JoQdaWmE37bA8AgtwUDFq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6dbbfb9d0203430b10025e9be0e1e4078abdb9169881db07a03c9adddfe2771. 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/3JoQdaWmE37bA8AgtwUDFq.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/3JoQdaWmE37bA8AgtwUDFq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7c48174058f2a07cdc6d5f0449af15f149fa8e609e44a024e95ce33a95f886. 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/5tMUWz8FHinBAAd84Pphg8.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/5tMUWz8FHinBAAd84Pphg8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfa36cd7ef91224675a0a050eea143fc9b7d13aa7c2df23ca3f6d9fcfd221ff. 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/7Jdh3zM1TuvmJqtQ8k7c20.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/7Jdh3zM1TuvmJqtQ8k7c20.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0034f97150728a170706f7c8a34fbdded0dc3f08b1b02cda1cbe0a4315275156. 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/479H2unnDAWOPc56Qs4UbD.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/479H2unnDAWOPc56Qs4UbD.
{"copyright_id":"0xcfe49192a5c0e6f894c4abef10107cbdc5edf9d8e6c6c52d3bad5da032515e6b","isrc":"QZDA62087975","name":"Faceless//nights Like These","registered_at":"2026-06-06T19:56:37Z","spotify_id":"0JNcIRnwIAX9rJoj3zgZin","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe49192a5c0e6f894c4abef10107cbdc5edf9d8e6c6c52d3bad5da032515e6b. 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/0JNcIRnwIAX9rJoj3zgZin.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/0JNcIRnwIAX9rJoj3zgZin.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe238e7b24a1f5f9ef7b1d9e9d157d31e0c898dae3321c78a04d342357a6815ad. 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/2vH1TZZzrks1j2unacJi4i.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/2vH1TZZzrks1j2unacJi4i.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc8413baddd9ebbf9df974a2db3b5307c020d82130679f49444a94d5b9f365b. 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/1MEIE2I4Wi8ETZXS9vcwTw.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/1MEIE2I4Wi8ETZXS9vcwTw.
{"copyright_id":"0xa9df113f08e4c349238a1419c26beda0c06d482b592c86f4fafc2c13f663eea0","isrc":"QZFZ71992791","name":"Fear of the Unknown","registered_at":"2026-06-07T21:42:10Z","spotify_id":"50jqyRcWhr7sxuQjD30mhJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9df113f08e4c349238a1419c26beda0c06d482b592c86f4fafc2c13f663eea0. 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/50jqyRcWhr7sxuQjD30mhJ.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/50jqyRcWhr7sxuQjD30mhJ.
{"copyright_id":"0x1a96a68de7ff657e796d3614c916d5368ae041bdfdd1faac46fde7ad6e47a785","isrc":"QZDA51914624","name":"Sleep Above the Moon","registered_at":"2026-06-09T10:19:21Z","spotify_id":"6xQv87USoFx2zNmXFht1Wx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a96a68de7ff657e796d3614c916d5368ae041bdfdd1faac46fde7ad6e47a785. 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/6xQv87USoFx2zNmXFht1Wx.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/6xQv87USoFx2zNmXFht1Wx.
{"copyright_id":"0x2dc6c2ada2c1b2d7245c4905a0e74339b36ea05852edae5c68951a878abe7765","isrc":"QZDA51914625","name":"I Let Down Everyone I Love","registered_at":"2026-06-24T19:26:52Z","spotify_id":"3nypnEPsTSNrkfYVWY6UPw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc6c2ada2c1b2d7245c4905a0e74339b36ea05852edae5c68951a878abe7765. 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/3nypnEPsTSNrkfYVWY6UPw.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/3nypnEPsTSNrkfYVWY6UPw.