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 0x5261f8f6bc5417c4d49b1645d801a62282ad0b64fd6ff1ea2756b54362bfddd0. 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/55dac194-5fbd-42e5-a685-9b63846a52e2.json and https://artists.proofprofile.net/proofs/artist/55dac194-5fbd-42e5-a685-9b63846a52e2.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 0x68a94d17145e07949a56f513560ff783f63bcf107503fdc74d29855adc1a3578. 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/3dgk9BJw49CNkw9dN3FzRq.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/3dgk9BJw49CNkw9dN3FzRq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029476e80623f962aa9b2a221c110813f0527fe615297aeaccb6f53137dc4dfe. 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/30RmCe52fU1VcV5qGw7uRD.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/30RmCe52fU1VcV5qGw7uRD.
{"copyright_id":"0xd271a1248ef5333a8da35797d958eefa1a8f221d36c322e6fa7e6765af5476c2","isrc":"DEW250300410","name":"King in My Empire (Burial Mix) (Mixed)","registered_at":"2026-06-05T10:05:16Z","spotify_id":"798kDlmSEZkLEKb9z9mg1r","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd271a1248ef5333a8da35797d958eefa1a8f221d36c322e6fa7e6765af5476c2. 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/798kDlmSEZkLEKb9z9mg1r.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/798kDlmSEZkLEKb9z9mg1r.
Have You Passed Through This Night (Mixed)
{"copyright_id":"0xa86245f1d6953deb44780ddada19be86f417991f5b37631e5368371d3de4948e","isrc":"GBJX35016011","name":"Have You Passed Through This Night (Mixed)","registered_at":"2026-06-11T04:43:32Z","spotify_id":"62Cy6o4X3q7Fccbyw7TP7Z","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86245f1d6953deb44780ddada19be86f417991f5b37631e5368371d3de4948e. 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/62Cy6o4X3q7Fccbyw7TP7Z.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/62Cy6o4X3q7Fccbyw7TP7Z.
{"copyright_id":"0x52c1d9df30b60f50fee450ad53f5e84ad440b7b3b70bdc2021752e6cce836149","isrc":"DECY51001274","name":"Femme Cosmic (Mixed)","registered_at":"2026-06-25T07:15:58Z","spotify_id":"3o3nPtp7e7b2faepiRCLgf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c1d9df30b60f50fee450ad53f5e84ad440b7b3b70bdc2021752e6cce836149. 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/3o3nPtp7e7b2faepiRCLgf.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/3o3nPtp7e7b2faepiRCLgf.
{"copyright_id":"0x04720a4e14ab3f349db1c95b58313a919354caea2bfba98b40c7c42e26c59016","isrc":"SEWCE1700008","name":"To the Moon and Back (Mixed)","registered_at":"2026-06-26T16:48:44Z","spotify_id":"6r9IDtr8qYZPkSeyAryeGd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04720a4e14ab3f349db1c95b58313a919354caea2bfba98b40c7c42e26c59016. 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/6r9IDtr8qYZPkSeyAryeGd.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/6r9IDtr8qYZPkSeyAryeGd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12ac80eb5a10c6208e6dedfd919f4e42a4da2d6b908b33f4f98788bc03bb999. 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/1gizBcPmlem2KZ4oFA5WUa.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/1gizBcPmlem2KZ4oFA5WUa.
{"copyright_id":"0x322373dc410957133216c42a92a93d13eafd87a6f4cc7bae7f3dbd2da26b893f","isrc":"DKAZ71834501","name":"Hey Moloko (Mixed)","registered_at":"2026-06-08T02:55:12Z","spotify_id":"7MEuoyRynR1DT5FCOJqx4Y","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322373dc410957133216c42a92a93d13eafd87a6f4cc7bae7f3dbd2da26b893f. 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/7MEuoyRynR1DT5FCOJqx4Y.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/7MEuoyRynR1DT5FCOJqx4Y.
Somewhere I Have Never Travelled (for Coral Evans) (Mixed)
{"copyright_id":"0x3772df8abe0f487f2ea88a4f71c3b026e0b7abd1ef55c1d38df71d14c82e5018","isrc":"USYBL1902162","name":"Workaround Two (Mixed)","registered_at":"2026-06-19T09:42:31Z","spotify_id":"52T9TYNuDLYXJ8mVAF38K8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3772df8abe0f487f2ea88a4f71c3b026e0b7abd1ef55c1d38df71d14c82e5018. 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/52T9TYNuDLYXJ8mVAF38K8.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/52T9TYNuDLYXJ8mVAF38K8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3364e90902b17e7b0d717e51473f88bc824e7350d11c2f5891872399c8956b2f. 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/6mhlxYuvnV9W78GZPHpqyc.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/6mhlxYuvnV9W78GZPHpqyc.
{"copyright_id":"0x7190c712d05ae67616054d45e3c933ee9118fbb15edeac3038bc8d6e4173cddc","isrc":"GBR8R1700340","name":"The Bomb (Mixed)","registered_at":"2026-06-11T04:41:55Z","spotify_id":"7tiTLtRfXD9oBAJjkdOJiH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7190c712d05ae67616054d45e3c933ee9118fbb15edeac3038bc8d6e4173cddc. 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/7tiTLtRfXD9oBAJjkdOJiH.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/7tiTLtRfXD9oBAJjkdOJiH.
City Lounge - The Deep Session (The Finest Music Selection: Deep House, Trip Hop, Downtempo, Cool Tempo, Lounge, Electro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a21a24229cef0c7069883d337c98ac11fc7d9b2503199741b4c61a9dc93aba0. 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/5MRYyecW552BEq2nRBfIQX.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/5MRYyecW552BEq2nRBfIQX.
I am not a woman, I'm a god - Hot Chip Remix
{"copyright_id":"0xa162c010f6164e08d565fe6152a8404bc9b440985a574e438eded895be924ebc","isrc":"USUM72117718","name":"I am not a woman, I'm a god - Hot Chip Remix","registered_at":"2026-06-07T18:40:35Z","spotify_id":"6N9e2i99cXGGujgELtxotL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa162c010f6164e08d565fe6152a8404bc9b440985a574e438eded895be924ebc. 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/6N9e2i99cXGGujgELtxotL.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/6N9e2i99cXGGujgELtxotL.
{"copyright_id":"0x7a2307b74afccdb03ec661e3af621afa7417947cbb889676af54248e45351051","isrc":"USUG12101579","name":"Disco Man - Hot Chip Remix","registered_at":"2026-06-08T10:38:29Z","spotify_id":"0Isq4wD0XxAcA3pAePz3XJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2307b74afccdb03ec661e3af621afa7417947cbb889676af54248e45351051. 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/0Isq4wD0XxAcA3pAePz3XJ.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/0Isq4wD0XxAcA3pAePz3XJ.
Think About Things - Hot Chip Remix Edit
{"copyright_id":"0xdccc781f6a763752eb7cb4d2803fd0b9ddf06dbb2c8e15ea850add78a87f0d16","isrc":"GBKPL2001312","name":"Think About Things - Hot Chip Remix Edit","registered_at":"2026-06-08T18:32:22Z","spotify_id":"3Q5q3wmVSyZ5P9zEmF5XDk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccc781f6a763752eb7cb4d2803fd0b9ddf06dbb2c8e15ea850add78a87f0d16. 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/3Q5q3wmVSyZ5P9zEmF5XDk.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/3Q5q3wmVSyZ5P9zEmF5XDk.
{"copyright_id":"0x01a89944d62190782cba36f055be23e8ddbe995cf26f536073a803c900179fe6","isrc":"GBKPL2001313","name":"Think About Things - Hot Chip Remix","registered_at":"2026-06-18T13:17:38Z","spotify_id":"6NVTZ1y1jB6YuvdkILuhPX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a89944d62190782cba36f055be23e8ddbe995cf26f536073a803c900179fe6. 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/6NVTZ1y1jB6YuvdkILuhPX.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/6NVTZ1y1jB6YuvdkILuhPX.
How Do You Do (Todd Terje Remix) - Mixed
Kitsuné Soleil Mix 2 by Gildas Kitsuné & Jerry Bouthier
{"copyright_id":"0xda7dff01734de65bb586b4cd4e9881ceaec5e98b52e7a75a63c70d680cd05de5","isrc":"GBCEL1300137","name":"How Do You Do (Todd Terje Remix) - Mixed","registered_at":"2026-06-18T13:17:16Z","spotify_id":"43syaZZj1JkrGNepX7ZOLA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7dff01734de65bb586b4cd4e9881ceaec5e98b52e7a75a63c70d680cd05de5. 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/43syaZZj1JkrGNepX7ZOLA.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/43syaZZj1JkrGNepX7ZOLA.
{"copyright_id":"0xf90646f838bddd06fdeb59baada33b8bfa0840083b17a4e3378fb295b076a13d","isrc":"AUUM71800149","name":"My My My! - Hot Chip Remix","registered_at":"2026-06-20T20:47:09Z","spotify_id":"6n7wEraV9zh5oJrBvZH6Uu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90646f838bddd06fdeb59baada33b8bfa0840083b17a4e3378fb295b076a13d. 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/6n7wEraV9zh5oJrBvZH6Uu.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/6n7wEraV9zh5oJrBvZH6Uu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140a555ef0a07ee397221954586040679810186e0898d5190298019e5b581ba3. 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/2b9WHswkjidJF2VWcEwetb.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/2b9WHswkjidJF2VWcEwetb.
{"copyright_id":"0x0c5e1c1b6cb56b310d0f8d6c51b718ece1578b20cbf35726e4a9408f960c05ef","isrc":"GBUM70604332","name":"Rehab - Hot Chip Remix","registered_at":"2026-06-10T02:01:55Z","spotify_id":"2ITiXUK2pGETJeBnBN56ZP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5e1c1b6cb56b310d0f8d6c51b718ece1578b20cbf35726e4a9408f960c05ef. 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/2ITiXUK2pGETJeBnBN56ZP.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/2ITiXUK2pGETJeBnBN56ZP.
{"copyright_id":"0xc8bf5d02e2748104d414ade1663d81be2fcc6df38da30070b7e2217e8de98e4b","isrc":"GBCFB2300005","name":"Wide Awake - Hot Chip Remix","registered_at":"2026-06-08T01:58:08Z","spotify_id":"2KYPuQ2MunGKyUTfdRYHxs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bf5d02e2748104d414ade1663d81be2fcc6df38da30070b7e2217e8de98e4b. 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/2KYPuQ2MunGKyUTfdRYHxs.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/2KYPuQ2MunGKyUTfdRYHxs.
{"copyright_id":"0x53aabfc38cb3872cc2c07fbbce80909526bf82251e59a7b26d9c7b7453e396a6","isrc":"GBCEL2100251","name":"Straight To The Morning - Myd Remix","registered_at":"2026-06-08T10:42:40Z","spotify_id":"3KLXqJ0Syps75zQbMxE3xE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53aabfc38cb3872cc2c07fbbce80909526bf82251e59a7b26d9c7b7453e396a6. 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/3KLXqJ0Syps75zQbMxE3xE.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/3KLXqJ0Syps75zQbMxE3xE.
{"copyright_id":"0x029476e80623f962aa9b2a221c110813f0527fe615297aeaccb6f53137dc4dfe","isrc":"GBCEL2000324","name":"Nothing's Changed","registered_at":"2026-06-21T01:28:03Z","spotify_id":"6NlzROzwDhXViYm4TfBBbv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029476e80623f962aa9b2a221c110813f0527fe615297aeaccb6f53137dc4dfe. 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/6NlzROzwDhXViYm4TfBBbv.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/6NlzROzwDhXViYm4TfBBbv.