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 0x174240a23f6475da3a4f675c0e54ac22b64cf72358368735934409af603a228b. 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/6252a6ae-5ed8-4dce-8a35-85110c6eafb9.json and https://artists.proofprofile.net/proofs/artist/6252a6ae-5ed8-4dce-8a35-85110c6eafb9.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 0xa4cd506d656178d8d4336f7e71270ada4fa9c120f54c8bf51879c8b8af269762. 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/1Tue4ooRBGEXMcgpVC7AUD.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/1Tue4ooRBGEXMcgpVC7AUD.
{"copyright_id":"0xfa8ab7d553a365937648dfc2463e767ed5dcff39c3e81cc7e37ff35c3bd2f9e1","isrc":"DEE862201310","name":"Neuer Weg","registered_at":"2026-06-08T02:32:39Z","spotify_id":"3TnqkgFCQ98ciUIpzPpNzS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8ab7d553a365937648dfc2463e767ed5dcff39c3e81cc7e37ff35c3bd2f9e1. 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/3TnqkgFCQ98ciUIpzPpNzS.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/3TnqkgFCQ98ciUIpzPpNzS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c63ef449bb05f9c43565c58d2bb443bf0ed43887bbae6e253b9ee01d3786df8. 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/7ixqW82vqFuNBpjfe2Movq.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/7ixqW82vqFuNBpjfe2Movq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992e200b96ad71bdb13fd884e64e6149ed4d2971ce44a27bf29222f10fc47cae. 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/2xZfqAHEyVNaRSIQFLKDLl.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/2xZfqAHEyVNaRSIQFLKDLl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a028e02f7c602821dfe7dc47565689ce90245c6f599dee2dd575be19c5beda6. 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/6BfGkZQPlKYNk3q20oQXJ2.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/6BfGkZQPlKYNk3q20oQXJ2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44514b7fec6914e54139b0408758ac6ae0f52cc3662366bdda8ffc37e2696e6. 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/6hhCeQ52aumOgQFBgsD4GB.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/6hhCeQ52aumOgQFBgsD4GB.
{"copyright_id":"0xb5692b7dbca00b284cf74b20c43aca74adb1eaf7b5c240cbdcec844854a62a29","isrc":"DEE862201314","name":"Fly (feat. Summer Cem)","registered_at":"2026-06-08T19:11:15Z","spotify_id":"42yF6FU8ftSiaLV9fezA7g","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5692b7dbca00b284cf74b20c43aca74adb1eaf7b5c240cbdcec844854a62a29. 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/42yF6FU8ftSiaLV9fezA7g.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/42yF6FU8ftSiaLV9fezA7g.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef0b66754d136aacd5d4d100f81901db0641517f14bbf2395d5863375e44613. 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/7EgTVmJGwULLt9rcvglNpo.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/7EgTVmJGwULLt9rcvglNpo.
{"copyright_id":"0x4cd46341c0f6aad75be336e644ef56108b724660e3b64698682a849ecdfc8659","isrc":"DEE862201316","name":"Blocckind (feat. VOLO & Hanybal)","registered_at":"2026-06-04T15:45:48Z","spotify_id":"1URLHmeQd4jtfBp2AYXkco","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd46341c0f6aad75be336e644ef56108b724660e3b64698682a849ecdfc8659. 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/1URLHmeQd4jtfBp2AYXkco.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/1URLHmeQd4jtfBp2AYXkco.
{"copyright_id":"0x9cfeff4ed71a2814870e4add57c04b536e334c24d5b08ec3a90cb4fd005cfba3","isrc":"DEE862201317","name":"It doesn't matter","registered_at":"2026-06-05T07:05:45Z","spotify_id":"6xPDZrwnGyosiOFzEKx6X9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfeff4ed71a2814870e4add57c04b536e334c24d5b08ec3a90cb4fd005cfba3. 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/6xPDZrwnGyosiOFzEKx6X9.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/6xPDZrwnGyosiOFzEKx6X9.
{"copyright_id":"0x23ab27cc9a706b320c10421b2607c341f3e64f3e7030f1afc3b5a374408f9087","isrc":"DEE862201056","name":"Gemischte Feelings","registered_at":"2026-06-06T23:27:25Z","spotify_id":"6cVLQRoDecKixkEVgmupSC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ab27cc9a706b320c10421b2607c341f3e64f3e7030f1afc3b5a374408f9087. 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/6cVLQRoDecKixkEVgmupSC.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/6cVLQRoDecKixkEVgmupSC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55778e4521e147e128d2038eb3fb1db946e466a55b96d584cf829dbaac4858ca. 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/6lAw6DlyVa3puZV7fpynhC.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/6lAw6DlyVa3puZV7fpynhC.
{"copyright_id":"0x3b2a38eb46abb908991c4a981ad051e3f69a166c8aec2ec1816ab67f06fbd4c0","isrc":"DEE862201319","name":"Cheatcode (feat. Aitch)","registered_at":"2026-06-06T09:44:06Z","spotify_id":"4ec1J5HdrKqhykJiQL2jDq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2a38eb46abb908991c4a981ad051e3f69a166c8aec2ec1816ab67f06fbd4c0. 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/4ec1J5HdrKqhykJiQL2jDq.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/4ec1J5HdrKqhykJiQL2jDq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44dcf17f4861ef89f7c5cbb0d1b87fcf62b06f359a1aab850481bb1c3ca2214. 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/3hLN2xhZeGoF2grxAobdEK.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/3hLN2xhZeGoF2grxAobdEK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cab0be2ed30a68f12b462a4df0e27dd2bb55387092b9ead6636fe2f5ede29f3. 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/7hCo2J1ItCXh0XJaWahxCO.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/7hCo2J1ItCXh0XJaWahxCO.
{"copyright_id":"0xd0d9fcb31c3dbd2772749dd133d8b4323befdc9ace4593a226fe0bb81c3c5fec","isrc":"DEE862201322","name":"Singapur Flow (feat. Bausa)","registered_at":"2026-06-08T19:14:24Z","spotify_id":"5fpE84hOF4r7uSsZYwMFyk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d9fcb31c3dbd2772749dd133d8b4323befdc9ace4593a226fe0bb81c3c5fec. 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/5fpE84hOF4r7uSsZYwMFyk.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/5fpE84hOF4r7uSsZYwMFyk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1db969aece4ea11470223036b40c58606676e891e9a1b048cfbaf7ce3ef10e9. 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/7j6fxcd1rcMzBk2oHMnufR.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/7j6fxcd1rcMzBk2oHMnufR.
No Borders: European Compilation Project
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cd506d656178d8d4336f7e71270ada4fa9c120f54c8bf51879c8b8af269762. 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/109zbOmrUeunCHnZ76B0Kx.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/109zbOmrUeunCHnZ76B0Kx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761a39908371e859f8fca72da8dae9d2f9c19c1dccfeea7e71c721177eccd202. 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/5aoj3AXkJ7K2h5r8mmD6FS.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/5aoj3AXkJ7K2h5r8mmD6FS.
{"copyright_id":"0x4cd46341c0f6aad75be336e644ef56108b724660e3b64698682a849ecdfc8659","isrc":"DEE862201316","name":"Blocckind (feat. VOLO & Hanybal)","registered_at":"2026-06-04T15:45:48Z","spotify_id":"0eawqqWr7RvuJZRiKHUd3R","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd46341c0f6aad75be336e644ef56108b724660e3b64698682a849ecdfc8659. 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/0eawqqWr7RvuJZRiKHUd3R.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/0eawqqWr7RvuJZRiKHUd3R.
{"copyright_id":"0x1cfb1c5e7ce62c1d40d8bb2077addba4e2a731101800dea5c6600361a4026d67","isrc":"DEA622401537","name":"PRAY FOR ME - Level Space Edition","registered_at":"2026-06-05T22:43:24Z","spotify_id":"3k2AJOU8oeNQeXsrCMSoQF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfb1c5e7ce62c1d40d8bb2077addba4e2a731101800dea5c6600361a4026d67. 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/3k2AJOU8oeNQeXsrCMSoQF.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/3k2AJOU8oeNQeXsrCMSoQF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0617aa4dc8b248ed836c51ca830306a0e73c67bc76a539677ef006b3e2b77a. 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/1HubIyi7uYfFsj90HcqG3e.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/1HubIyi7uYfFsj90HcqG3e.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad62142094a2b1c0227a87efb88c54b9ff3a79f5fae72215cfa86a0696a5d84. 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/65nI6cFBAzyvJ9c9x68ono.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/65nI6cFBAzyvJ9c9x68ono.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad62142094a2b1c0227a87efb88c54b9ff3a79f5fae72215cfa86a0696a5d84. 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/1RjiqmpgS2lymhy0A15SW6.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/1RjiqmpgS2lymhy0A15SW6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb67c5db999ca3bc446948d8f5e7a93d7cabc66aa56d8a88f2a0e7db226a8f3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/13Eq1ZrdarZlkIgY7okwc0.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/13Eq1ZrdarZlkIgY7okwc0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ed85f5ad672c761d5bf406b4e6ab8bf36c1c03f52e9eb0291c7087d3050500. 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/5KJO53ZSDxyO36qpwMfIVB.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/5KJO53ZSDxyO36qpwMfIVB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8051ab282b1bbfea56d1f2cbf1f0ad7593048b42453d15b97f29483d159adb. 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/156aaZo4641IEA0aq56Czc.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/156aaZo4641IEA0aq56Czc.