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 0xf4070256a2b78ad7fca6fa4cfcb5bddd1cd267a4c411f470462e00490f7913df. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0dd32f4-0695-49bc-9a69-1a81c72a2dbc.json and https://artists.proofprofile.net/proofs/artist/f0dd32f4-0695-49bc-9a69-1a81c72a2dbc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Heroine (Cryogenic feat. Unlocked The Uptempo Edit)
Heroine - Cryogenic feat. Unlocked The Uptempo Edit
{"copyright_id":"0x1d320c8667a4214e050bee9b0abf67a4d2787acdcb9d0999b8ffd3e45be44ca0","isrc":"NLS202200298","name":"Heroine - Cryogenic feat. Unlocked The Uptempo Edit","registered_at":"2026-06-04T06:38:59Z","spotify_id":"2KkNsekL5ayUqYtkivLdNu","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 0x1d320c8667a4214e050bee9b0abf67a4d2787acdcb9d0999b8ffd3e45be44ca0. 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/2KkNsekL5ayUqYtkivLdNu.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/2KkNsekL5ayUqYtkivLdNu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a2927e9b2302de4a3b564142d64efaad9576491001d9d41ba020c9bb928c67. 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/6EmcMTfVWSYkQK0KOx2NYK.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/6EmcMTfVWSYkQK0KOx2NYK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51af51cd915e8efb67335c34484437021bdd1666592226c2e68260503865e2cb. 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/0kexWh1Fn7JqN5FClToP0t.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/0kexWh1Fn7JqN5FClToP0t.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebc23358dff97123b4df08796916053e473af186e46cc52e3069e966d674775. 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/7IUMAeKLAXvdf9MivdMcTu.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/7IUMAeKLAXvdf9MivdMcTu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2094b985a9795613368167a350c1b99fb0450360b0beb141c3ba7cb6640291b. 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/0YVu8Qx847VbSbkQaZmrbv.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/0YVu8Qx847VbSbkQaZmrbv.
{"copyright_id":"0xe5cfc7d64e3ad0addfe5b1b7ed847a45bc7c64804095e323de0145e31af2d436","isrc":"NLFL72300309","name":"Tripping On Acid","registered_at":"2026-06-08T05:02:23Z","spotify_id":"5imuHEsTDGKVU58cn3Layx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cfc7d64e3ad0addfe5b1b7ed847a45bc7c64804095e323de0145e31af2d436. 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/5imuHEsTDGKVU58cn3Layx.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/5imuHEsTDGKVU58cn3Layx.
{"copyright_id":"0x9cd30dae1bd2daf0befeca04e1c7048e4e3c2ebf11a2f3ef438db010d3a0d999","isrc":"NLFL72400367","name":"Vois Sur Ton Chemin","registered_at":"2026-06-08T05:04:05Z","spotify_id":"0srZTCuj6ouqEVdw5KPa4m","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd30dae1bd2daf0befeca04e1c7048e4e3c2ebf11a2f3ef438db010d3a0d999. 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/0srZTCuj6ouqEVdw5KPa4m.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/0srZTCuj6ouqEVdw5KPa4m.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffea8058ea3039d783ff6544cf9061c470c80f4745d5aa5db4c9bd590c10e007. 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/2rK1jQHagNcjIAMy5zwtnU.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/2rK1jQHagNcjIAMy5zwtnU.
{"copyright_id":"0x22a03aba57812c57210a22ea0e55fadf4795eafcbe1b890bfdf8a8366d313d47","isrc":"NLFL72400207","name":"This Moment - Unlocked Remix","registered_at":"2026-06-19T18:53:18Z","spotify_id":"2GGFaDcHMLbThWTbfgUuXw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a03aba57812c57210a22ea0e55fadf4795eafcbe1b890bfdf8a8366d313d47. 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/2GGFaDcHMLbThWTbfgUuXw.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/2GGFaDcHMLbThWTbfgUuXw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95bc8d707cd69780093be0664e7b5d2081a74c6d721cd41f1a8ec793bd3811f. 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/6KQyU88XaFtoKFlmM4TnM6.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/6KQyU88XaFtoKFlmM4TnM6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0d19f98ce2935afc18a5fa878503f942ea1d8a47b4314d8a8c0d442cf2a272. 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/7JTNs3ByQ4uaxRu8REJ925.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/7JTNs3ByQ4uaxRu8REJ925.
{"copyright_id":"0xfb32b842c9334cd25ecbd22ec32de6ad92d4732501f33021340ba38fa90941df","isrc":"NLFL72400071","name":"James Brown Is Back","registered_at":"2026-06-11T15:24:20Z","spotify_id":"04hxf1SAQRyBqdP3s2hTiB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb32b842c9334cd25ecbd22ec32de6ad92d4732501f33021340ba38fa90941df. 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/04hxf1SAQRyBqdP3s2hTiB.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/04hxf1SAQRyBqdP3s2hTiB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5823387833a3ab10519d77261c2f5450ed8b002311d1183b6265803fd5650d1e. 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/6ZZgaUe2lxB7rt0EzPL240.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/6ZZgaUe2lxB7rt0EzPL240.
{"copyright_id":"0x2110b6e3f3ac5e65a20a059621f2d99992cb054f03436084faecec1992d66e3f","isrc":"NLS242300242","name":"Turn the Tide - Unlocked Remix","registered_at":"2026-06-08T05:11:51Z","spotify_id":"0wKXjMSvmUtLIohX8XJLDc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2110b6e3f3ac5e65a20a059621f2d99992cb054f03436084faecec1992d66e3f. 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/0wKXjMSvmUtLIohX8XJLDc.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/0wKXjMSvmUtLIohX8XJLDc.
{"copyright_id":"0x108c7fb71383e46b2da5ab16b64e13e79d6abb067b85a5f32465835763f7f4b0","isrc":"NLS242300243","name":"Turn the Tide - Unlocked Extended Remix","registered_at":"2026-06-24T18:14:40Z","spotify_id":"02M2hYM5tGBuTTzHKNVj1N","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108c7fb71383e46b2da5ab16b64e13e79d6abb067b85a5f32465835763f7f4b0. 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/02M2hYM5tGBuTTzHKNVj1N.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/02M2hYM5tGBuTTzHKNVj1N.
{"copyright_id":"0xe9e731ba131e77ecbdcdf7573348df57b75a624d954dbe1187a9afcc60d0f202","isrc":"NLFL72300599","name":"Tramp Stamp","registered_at":"2026-06-25T00:02:40Z","spotify_id":"5ltlm0bOTsEkOwnCW2yUdg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e731ba131e77ecbdcdf7573348df57b75a624d954dbe1187a9afcc60d0f202. 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/5ltlm0bOTsEkOwnCW2yUdg.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/5ltlm0bOTsEkOwnCW2yUdg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2cc1072d594a7b009bcf86118417b2e7e125a9f5877bd5771aee3ad685d15d. 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/6PoDpcyhwfU8ttBbU4c5dA.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/6PoDpcyhwfU8ttBbU4c5dA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93289d9d89d17aad51b443df3898de093ff189cf7ae0d1d5733b40940a186085. 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/164XRnFMsUiPCYkGmG5481.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/164XRnFMsUiPCYkGmG5481.
{"copyright_id":"0x01883c1bfe177cb6a6d98cf3fe2d170c7e5b8028f02c243cdcf728ba1bdf9ec0","isrc":"NLFL72300008","name":"Bounce Back","registered_at":"2026-06-08T23:55:55Z","spotify_id":"4ATFnTxz8I0j68JEin1Lwm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01883c1bfe177cb6a6d98cf3fe2d170c7e5b8028f02c243cdcf728ba1bdf9ec0. 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/4ATFnTxz8I0j68JEin1Lwm.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/4ATFnTxz8I0j68JEin1Lwm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03581232f0129f579eab9e503473ad5cde17747595fd1bfd2f8ddc392a7ff5cf. 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/3yRDXOqKQffxifPzb2wKvo.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/3yRDXOqKQffxifPzb2wKvo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952ab34c5dd6bc0dda625c947635e5c4c80850558565816d63d3e3417ff3aa87. 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/307tUdZ4NEbjAvtCzvpFeE.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/307tUdZ4NEbjAvtCzvpFeE.