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 0x4c85e33eb0a790aae68fa85ea0719c3806776f889053d409bc700261d2f28b15. 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/b11a1bc9-01fa-4fa0-941f-03cf14945be3.json and https://artists.proofprofile.net/proofs/artist/b11a1bc9-01fa-4fa0-941f-03cf14945be3.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 0x3c0b411208349624ef5f9f6403b130d5f1380c8f2e14ec2aa239167fc92f1880. 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/09Ngu1AJ2MxEYDyw1RNX36.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/09Ngu1AJ2MxEYDyw1RNX36.
It's Wrong (feat. Danny Dearden) [The Remixes]
{"copyright_id":"0xdcbc4f2458a87a8c054cbfd76109e2237a4c065ef156f6be4722bd15c94d0283","isrc":"UKRBV1800055","name":"Foundations - Michael Calfan Remix","registered_at":"2026-06-21T18:05:59Z","spotify_id":"1g3twYf67lyHAagq24i9gn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbc4f2458a87a8c054cbfd76109e2237a4c065ef156f6be4722bd15c94d0283. 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/1g3twYf67lyHAagq24i9gn.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/1g3twYf67lyHAagq24i9gn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4979cb2c9a66c21276342625b84089d920003205121bb6b074c7b138c41a810. 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/0m7RiE4eae6GskAvYUsCSj.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/0m7RiE4eae6GskAvYUsCSj.
{"copyright_id":"0x2348941c2db3c3197095e65cb8b4eb7e398efe046a27354d9fcf6c6b0f4784de","isrc":"GBAHT2000354","name":"No Lie - Nico de Andrea Remix","registered_at":"2026-06-23T03:59:37Z","spotify_id":"54muxgt4BdyVlBHGJN4oQC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2348941c2db3c3197095e65cb8b4eb7e398efe046a27354d9fcf6c6b0f4784de. 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/54muxgt4BdyVlBHGJN4oQC.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/54muxgt4BdyVlBHGJN4oQC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98de19b6054428986298ee02ce1d7ae7e9102d7dc453a868f629d736dff734a. 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/3dNtriHnu04IzDsH11nchU.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/3dNtriHnu04IzDsH11nchU.
{"copyright_id":"0xb9d05b798c67a7eab507bca3ff8609fb32419cc145421f9cffdae9448a6ddeb3","isrc":"GBAHT2000352","name":"No Lie - HUGEL Remix","registered_at":"2026-06-17T23:42:23Z","spotify_id":"1e4kWQcil63zi1DZSH3IsY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d05b798c67a7eab507bca3ff8609fb32419cc145421f9cffdae9448a6ddeb3. 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/1e4kWQcil63zi1DZSH3IsY.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/1e4kWQcil63zi1DZSH3IsY.
Resurrection - Axwell's Recut Radio Edit
{"copyright_id":"0x4dcf0524d9bfe12b23cd0296caa0c41521ddbe4bb153273e24ffafe6b9084410","isrc":"GBKCF1110197","name":"Resurrection - Axwell's Recut Radio Edit","registered_at":"2026-06-05T12:17:34Z","spotify_id":"4gZcorMw9xTt0mmc3a7moY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcf0524d9bfe12b23cd0296caa0c41521ddbe4bb153273e24ffafe6b9084410. 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/4gZcorMw9xTt0mmc3a7moY.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/4gZcorMw9xTt0mmc3a7moY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44e584782fb3f3562fe53154873cf9d302d55655f9a81431568e77e9e4e7004. 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/4TRUfYQsuPx6hlX8Eav9St.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/4TRUfYQsuPx6hlX8Eav9St.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27952660a4ca9ed74effcd64d85d409769550134a86561d9818aab51d8a934e. 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/3lCkk0p5M3MdWUd2LC90HG.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/3lCkk0p5M3MdWUd2LC90HG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cdd260955d5357ca0f03213aedd9574f18ed50bc76762edb18180fa52186dd. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:26:18Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7AHbSl2YUmkrgbcWujhzDU.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/7AHbSl2YUmkrgbcWujhzDU.
Hard Times (with Robinson) - Michael Calfan Remix
Hard Times (with Robinson) [Michael Calfan Remix]
{"copyright_id":"0x60eb194373a81edbd0fa2b0ba9c2209ecade6fe4e51c25c76f64d7eabed6b18a","isrc":"GBUM71904313","name":"Hard Times (with Robinson) - Michael Calfan Remix","registered_at":"2026-06-20T02:00:08Z","spotify_id":"2klcKvHP8lxVlO72dVW0mZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60eb194373a81edbd0fa2b0ba9c2209ecade6fe4e51c25c76f64d7eabed6b18a. 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/2klcKvHP8lxVlO72dVW0mZ.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/2klcKvHP8lxVlO72dVW0mZ.
{"copyright_id":"0x63b2f59dc521e1d6ea8d226f50029c4d9b0ba40f6103af99529ba12f455bba27","isrc":"GBAHS1800733","name":"1999 - Michael Calfan Remix","registered_at":"2026-06-19T10:18:15Z","spotify_id":"4Ytj4N00lxKJbooILErPO6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b2f59dc521e1d6ea8d226f50029c4d9b0ba40f6103af99529ba12f455bba27. 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/4Ytj4N00lxKJbooILErPO6.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/4Ytj4N00lxKJbooILErPO6.
Let Your Mind - Mikael Weermets & Nico De Andrea Remix
Flamingo Nights 4 Ibiza Edition [Mixed by Marco V and Jewelz & Scott Sparks]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1885955cb4547b6b051aeea73989d3828a2e717c3472672fdaa6719d42e1205. 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/1Yoy8E87P1C5ZBUL49RIE1.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/1Yoy8E87P1C5ZBUL49RIE1.
{"copyright_id":"0x09cccde267061e5c73b0d5d74fb592217615be29ab47994c191f22b29327e8a2","isrc":"USAT22106173","name":"Acapulco - Michael Calfan Remix","registered_at":"2026-06-06T23:55:46Z","spotify_id":"5cO1oGXUIw7X7QnKciZgnO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cccde267061e5c73b0d5d74fb592217615be29ab47994c191f22b29327e8a2. 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/5cO1oGXUIw7X7QnKciZgnO.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/5cO1oGXUIw7X7QnKciZgnO.
Courage to Change - Michael Calfan Remix
Courage to Change (Michael Calfan Remix)
{"copyright_id":"0x5e1de17c73767463eb676a6ab2037c029ced0722ef3f2082c4f1e562bfb96b51","isrc":"USAT22206341","name":"Courage to Change - Michael Calfan Remix","registered_at":"2026-06-06T23:56:21Z","spotify_id":"5LzBIh1CxOnNknwoi5hCb8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1de17c73767463eb676a6ab2037c029ced0722ef3f2082c4f1e562bfb96b51. 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/5LzBIh1CxOnNknwoi5hCb8.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/5LzBIh1CxOnNknwoi5hCb8.
Finest Hour (feat. Abir) - Michael Calfan Remix
{"copyright_id":"0x614bd158ccf2d01ffa1474a7351adbeb56da6ded7a166abbedd31b652bb3ce53","isrc":"USAT21802759","name":"Finest Hour (feat. Abir) - Michael Calfan Remix","registered_at":"2026-06-07T06:29:42Z","spotify_id":"4DPwy3jP2Iy5XDxfiYxq6f","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614bd158ccf2d01ffa1474a7351adbeb56da6ded7a166abbedd31b652bb3ce53. 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/4DPwy3jP2Iy5XDxfiYxq6f.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/4DPwy3jP2Iy5XDxfiYxq6f.
{"copyright_id":"0xc98de19b6054428986298ee02ce1d7ae7e9102d7dc453a868f629d736dff734a","isrc":"GBAHT2000351","name":"No Lie - Kideko Remix","registered_at":"2026-06-25T19:30:45Z","spotify_id":"1fwugvnzPeuMa4qat2Ni4V","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98de19b6054428986298ee02ce1d7ae7e9102d7dc453a868f629d736dff734a. 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/1fwugvnzPeuMa4qat2Ni4V.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/1fwugvnzPeuMa4qat2Ni4V.