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 0x38f3044a6925df3f0e7af86886814e03e456e3e46286316b1211df44925bf552. 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/7ed4c49c-aa36-434a-a773-5b4574b2b967.json and https://artists.proofprofile.net/proofs/artist/7ed4c49c-aa36-434a-a773-5b4574b2b967.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x5551c0c4e3b27cac765eb046bf75fc4a933d432b475efcb08888a301ec5feb1a","isrc":"TCAHN2358170","name":"Practice Erotic","registered_at":"2026-06-09T13:46:14Z","spotify_id":"6Zo7DG1UImiqtSunCQ7WCW","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 0x5551c0c4e3b27cac765eb046bf75fc4a933d432b475efcb08888a301ec5feb1a. 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/6Zo7DG1UImiqtSunCQ7WCW.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/6Zo7DG1UImiqtSunCQ7WCW.
Hannah in the City (Close Friends Story Version)
Hannah in the City - Close Friends Story Version
{"copyright_id":"0x73ea2f5b1b24a5fe6c04484f8bfd3252a8e27169e2e643a39a374f0c1d02158b","isrc":"CAN112301604","name":"Hannah in the City - Close Friends Story Version","registered_at":"2026-06-22T16:51:47Z","spotify_id":"4n07AnO54M7RXqfYdtaXLT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ea2f5b1b24a5fe6c04484f8bfd3252a8e27169e2e643a39a374f0c1d02158b. 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/4n07AnO54M7RXqfYdtaXLT.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/4n07AnO54M7RXqfYdtaXLT.
{"copyright_id":"0x387c717ce449910d78691aaf7375d7f07a539edb31aaa331fc7f880da071b31f","isrc":"TCAHH2367486","name":"Sixth Sense","registered_at":"2026-06-10T22:11:09Z","spotify_id":"3JLdRPaKMelMwgmpN5SENj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387c717ce449910d78691aaf7375d7f07a539edb31aaa331fc7f880da071b31f. 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/3JLdRPaKMelMwgmpN5SENj.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/3JLdRPaKMelMwgmpN5SENj.
Switch the Station - Audiotree Live Version
Close Friends Story - Audiotree Live Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d787272d270370be07a2082422389ac542be4a36823d7dbba6721a33c21be5. 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/3QrxIeWgS4pzkQhoH9eHPh.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/3QrxIeWgS4pzkQhoH9eHPh.
{"copyright_id":"0x9b7e8f7038deb6b44679c9affb19fe704c77ea42d1718182099bcc6eb034da78","isrc":"TCAGY2336539","name":"Switch the Station","registered_at":"2026-06-28T03:18:17Z","spotify_id":"3TFEW7ORko7OwkLs1jt2jP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7e8f7038deb6b44679c9affb19fe704c77ea42d1718182099bcc6eb034da78. 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/3TFEW7ORko7OwkLs1jt2jP.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/3TFEW7ORko7OwkLs1jt2jP.
{"copyright_id":"0x9fe8132d307b19ddef5cd237f9f3c76fe128afdf20f5fc396fd982b83369c796","isrc":"TCAHA2383892","name":"Jude Law","registered_at":"2026-06-20T01:48:34Z","spotify_id":"4TDLb2YioLQQgTrrGfBUoL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe8132d307b19ddef5cd237f9f3c76fe128afdf20f5fc396fd982b83369c796. 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/4TDLb2YioLQQgTrrGfBUoL.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/4TDLb2YioLQQgTrrGfBUoL.
{"copyright_id":"0x7abc4ee683b86259b5ac53bdb4b2bc83d0b7f8a7f940cc7021d31a6ff4e95f3d","isrc":"TCAGX2316308","name":"Little Life","registered_at":"2026-06-18T10:07:02Z","spotify_id":"02SSP4lqtTu5yUYQCvwgQd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abc4ee683b86259b5ac53bdb4b2bc83d0b7f8a7f940cc7021d31a6ff4e95f3d. 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/02SSP4lqtTu5yUYQCvwgQd.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/02SSP4lqtTu5yUYQCvwgQd.
{"copyright_id":"0x6fe07ed0b4b1c5ab353be4bbbabcc091c08d86b2346a8ddfc0618ac0ec6dab7a","isrc":"TCAHD2365796","name":"Close Friends Story","registered_at":"2026-06-10T12:40:26Z","spotify_id":"6hmIoWgqcZE8PsiMpxBSni","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe07ed0b4b1c5ab353be4bbbabcc091c08d86b2346a8ddfc0618ac0ec6dab7a. 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/6hmIoWgqcZE8PsiMpxBSni.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/6hmIoWgqcZE8PsiMpxBSni.
{"copyright_id":"0x9fe8132d307b19ddef5cd237f9f3c76fe128afdf20f5fc396fd982b83369c796","isrc":"TCAHA2383892","name":"Jude Law","registered_at":"2026-06-20T01:48:34Z","spotify_id":"15rPuany8XoTaijKHdAf4j","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe8132d307b19ddef5cd237f9f3c76fe128afdf20f5fc396fd982b83369c796. 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/15rPuany8XoTaijKHdAf4j.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/15rPuany8XoTaijKHdAf4j.
{"copyright_id":"0x9b7e8f7038deb6b44679c9affb19fe704c77ea42d1718182099bcc6eb034da78","isrc":"TCAGY2336539","name":"Switch the Station","registered_at":"2026-06-28T03:18:17Z","spotify_id":"19Pfj9S0uG7X1zDWJMXgqo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7e8f7038deb6b44679c9affb19fe704c77ea42d1718182099bcc6eb034da78. 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/19Pfj9S0uG7X1zDWJMXgqo.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/19Pfj9S0uG7X1zDWJMXgqo.
{"copyright_id":"0x9b7e8f7038deb6b44679c9affb19fe704c77ea42d1718182099bcc6eb034da78","isrc":"TCAGY2336539","name":"Switch the Station","registered_at":"2026-06-28T03:18:17Z","spotify_id":"56y3CVVJf9wNh1lZ8dIgPx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7e8f7038deb6b44679c9affb19fe704c77ea42d1718182099bcc6eb034da78. 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/56y3CVVJf9wNh1lZ8dIgPx.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/56y3CVVJf9wNh1lZ8dIgPx.
{"copyright_id":"0x7abc4ee683b86259b5ac53bdb4b2bc83d0b7f8a7f940cc7021d31a6ff4e95f3d","isrc":"TCAGX2316308","name":"Little Life","registered_at":"2026-06-18T10:07:02Z","spotify_id":"1ajjIwhR49Nd8U8EJaqVg7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abc4ee683b86259b5ac53bdb4b2bc83d0b7f8a7f940cc7021d31a6ff4e95f3d. 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/1ajjIwhR49Nd8U8EJaqVg7.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/1ajjIwhR49Nd8U8EJaqVg7.
{"copyright_id":"0x7abc4ee683b86259b5ac53bdb4b2bc83d0b7f8a7f940cc7021d31a6ff4e95f3d","isrc":"TCAGX2316308","name":"Little Life","registered_at":"2026-06-18T10:07:02Z","spotify_id":"7neB4qd6tZxWoSOwaelq9s","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abc4ee683b86259b5ac53bdb4b2bc83d0b7f8a7f940cc7021d31a6ff4e95f3d. 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/7neB4qd6tZxWoSOwaelq9s.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/7neB4qd6tZxWoSOwaelq9s.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d787272d270370be07a2082422389ac542be4a36823d7dbba6721a33c21be5. 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/2YUbb09KNjdHLh4F0iXzCi.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/2YUbb09KNjdHLh4F0iXzCi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d787272d270370be07a2082422389ac542be4a36823d7dbba6721a33c21be5. 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/34jEr8NupQF9PVS31Tyfff.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/34jEr8NupQF9PVS31Tyfff.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0985fab3d3563322d4ca032f25a77a97239ada952f324c4e1566a4a38946a3. 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/7AI7NTvw4BlVnQBSfLDD1q.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/7AI7NTvw4BlVnQBSfLDD1q.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f825ecc3620bc391e5c976a0a17c7d501d5fea4cf350d505345a35c97fe5782. 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/42Jl9YIutlOqAAAAOWGetE.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/42Jl9YIutlOqAAAAOWGetE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fd8c641489e55892b90be650833d41b4ba49de572c2100ee4d8b6bdbf3b791. 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/7d6lwcOj1jisE6ITPD1X4x.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/7d6lwcOj1jisE6ITPD1X4x.
Too Big for the Playground, Too Small for the Big Leagues
{"copyright_id":"0x27789648ac69a5fd156b83e15ca8cda822e423e2254b4e263bff3a5cd8f332b4","isrc":"QZDA42175922","name":"Politics of Lonely","registered_at":"2026-06-19T07:08:50Z","spotify_id":"386fynr8jrFh5iXqjIvvqh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27789648ac69a5fd156b83e15ca8cda822e423e2254b4e263bff3a5cd8f332b4. 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/386fynr8jrFh5iXqjIvvqh.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/386fynr8jrFh5iXqjIvvqh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa306ace155417a4346327149ea01b07440681d44946b2c52fc9770e2308ee1d0. 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/5xxY8SXdSnUShfmgdI1WPZ.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/5xxY8SXdSnUShfmgdI1WPZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6358473af374a2e346965d8efa46138eddc728bba20e50f7b8f4b8e646e05a. 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/5QBxSpwNt1n16IN86wWJYr.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/5QBxSpwNt1n16IN86wWJYr.
{"copyright_id":"0x703a76fdb73a8eb5bf6d0a76a087e5eca44f54d50a7f174bfa1ecf87b995cef9","isrc":"QZDA42175923","name":"Burn Out","registered_at":"2026-06-20T17:23:18Z","spotify_id":"67bbtpRGTrWUgDb4jegscZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703a76fdb73a8eb5bf6d0a76a087e5eca44f54d50a7f174bfa1ecf87b995cef9. 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/67bbtpRGTrWUgDb4jegscZ.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/67bbtpRGTrWUgDb4jegscZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79bf8428c44d79578c6e03b81926bc8f8d82f752c8b28ee3b489b4ce89f48c40. 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/3RBX0Wi3s5dkh76kJvuZ9o.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/3RBX0Wi3s5dkh76kJvuZ9o.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa306ace155417a4346327149ea01b07440681d44946b2c52fc9770e2308ee1d0. 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/1pxAM3cfNcCl26uyIluYLk.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/1pxAM3cfNcCl26uyIluYLk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6358473af374a2e346965d8efa46138eddc728bba20e50f7b8f4b8e646e05a. 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/61lYQjOJ7hBcXw1t6PRvZy.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/61lYQjOJ7hBcXw1t6PRvZy.