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 0xad554c21b95449cd6f350df2aa502198ccaea7c7f35ef92bd03c7af5e1299078. 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/aa36df7d-856d-4925-abcc-99a60199c9f0.json and https://artists.proofprofile.net/proofs/artist/aa36df7d-856d-4925-abcc-99a60199c9f0.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 0xb12973dc1d1b5f65ecea7170430831c811da42bb22ab517b26a516d28c313e17. 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/4ptJ0TpUyPyrawmjrRFAqE.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/4ptJ0TpUyPyrawmjrRFAqE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c226b6c7d12c737612878c06f06cb4639b687035539dcf89e4072bd3730039. 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/3qS5HIhPlcPuMDCwhnuMGO.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/3qS5HIhPlcPuMDCwhnuMGO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0de0210ee2b60ff52c0ce4c7ed6a4433ab99eaf91ad160695e308cb27ae5c8. 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/4Vxhl5a8OElh44OArPA08y.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/4Vxhl5a8OElh44OArPA08y.
{"copyright_id":"0xdbaaec0fcdc647d1dc681d57c13aaaad0e4ed1acfa70d90683ea5315b4dc08eb","isrc":"CA5KR2516895","name":"Cherry Tip","registered_at":"2026-06-06T08:53:07Z","spotify_id":"34woityb1QtZwg09ORlsFO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbaaec0fcdc647d1dc681d57c13aaaad0e4ed1acfa70d90683ea5315b4dc08eb. 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/34woityb1QtZwg09ORlsFO.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/34woityb1QtZwg09ORlsFO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61850ccc96460b7785465825c6e3238aa1bbf8ae91c37ced26bfa90de314362. 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/4gY7kztapN7xri8AXsJn8W.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/4gY7kztapN7xri8AXsJn8W.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb130c4e1422d1431da5cdf77f3c9a8b4c8aff7f75a442adfaf21e199607d21bc. 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/73051Me0oerq3tAWtHUfvv.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/73051Me0oerq3tAWtHUfvv.
{"copyright_id":"0x01ca59433593b9e3242af9a119c3ccd8acda33a567cc8f3529975cf00e50e665","isrc":"CA5KR2478657","name":"Take It Downtown","registered_at":"2026-06-08T09:18:15Z","spotify_id":"6pD6BbKzHlkjijpqhhJD0l","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ca59433593b9e3242af9a119c3ccd8acda33a567cc8f3529975cf00e50e665. 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/6pD6BbKzHlkjijpqhhJD0l.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/6pD6BbKzHlkjijpqhhJD0l.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d2827147c211cf748cb7509e756e6fdd2443821c57c1b8c40ce296a34215d3. 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/19lpBpvf54LlaBkmIouTaa.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/19lpBpvf54LlaBkmIouTaa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8305b51416b4249ccc769a7609e82590582b41e10493cfaec5288a45b1ffcada. 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/4MVBd78v5QSkGV2vrKUARQ.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/4MVBd78v5QSkGV2vrKUARQ.
{"copyright_id":"0x5df1d0c377d0eb02e3cc5919d470ef26a10856e36226211e2a415ba6ee2eb361","isrc":"CA5KR2409796","name":"Back 2 Life 2024 - Original Mix","registered_at":"2026-06-18T09:58:41Z","spotify_id":"5qQBfekdhjry5dDRzlNlDQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df1d0c377d0eb02e3cc5919d470ef26a10856e36226211e2a415ba6ee2eb361. 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/5qQBfekdhjry5dDRzlNlDQ.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/5qQBfekdhjry5dDRzlNlDQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277a58dcae6644f092080c3f69704289abeca7214007068193e49306f981bf63. 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/2ECcZazMo87qVJvA11MgGN.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/2ECcZazMo87qVJvA11MgGN.
{"copyright_id":"0x5001eb60066d5563c6f3bad0a926aa4ba131d92a46b43cc5ccdb62ea913d734b","isrc":"CA5KR2367790","name":"Studio Livin' - Radio Edit","registered_at":"2026-06-26T12:03:01Z","spotify_id":"1YuFQxRzLFYH9rNUMzFUlT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5001eb60066d5563c6f3bad0a926aa4ba131d92a46b43cc5ccdb62ea913d734b. 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/1YuFQxRzLFYH9rNUMzFUlT.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/1YuFQxRzLFYH9rNUMzFUlT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f0bb84893e82c20c8e35883fe3873ed855e49bdf53bce4a6cc17951625845a. 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/25gq2fKWxkK7diaizFdw6d.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/25gq2fKWxkK7diaizFdw6d.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a7d833061b498b35540226f292b5a204ceca3e9bba0eb7294d93e9022661f8. 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/6InjWH6YAP5gLPr3MOmUcl.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/6InjWH6YAP5gLPr3MOmUcl.
{"copyright_id":"0xe6fe2697fb3c2e7f2f81e75459f32f63ed0cd87ebe7af33eb684255508a07f84","isrc":"CA5KR2330429","name":"Tobacco Docks - Radio Edit","registered_at":"2026-06-04T12:44:19Z","spotify_id":"1lIaXZ4ojAtWuz2NWH0bfC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fe2697fb3c2e7f2f81e75459f32f63ed0cd87ebe7af33eb684255508a07f84. 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/1lIaXZ4ojAtWuz2NWH0bfC.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/1lIaXZ4ojAtWuz2NWH0bfC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753278a561a1f01d79a387682eb71b6662afd2cdec8e35779c1a4e65a1007fea. 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/6PgKmL7HYwDQRODPGM9EFi.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/6PgKmL7HYwDQRODPGM9EFi.
{"copyright_id":"0x4631396cbd4ba62b5f37a2d00647c588ce788b4c30079015bfff39a0f2e55d02","isrc":"CA5KR2314070","name":"Audio Manimals - Radio Edit","registered_at":"2026-06-11T01:32:02Z","spotify_id":"4nqJzt8IlWNXkvex9ACtxM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4631396cbd4ba62b5f37a2d00647c588ce788b4c30079015bfff39a0f2e55d02. 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/4nqJzt8IlWNXkvex9ACtxM.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/4nqJzt8IlWNXkvex9ACtxM.
{"copyright_id":"0x82bee1785e30d9de160c8d3698ff037cb2b56ba68ef99fbaa7e6bea1d9a9c822","isrc":"UKFDK0030243","name":"Steam Rollin'","registered_at":"2026-06-27T13:16:49Z","spotify_id":"5hb2jsmQhRNDNkrK2l8IyM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bee1785e30d9de160c8d3698ff037cb2b56ba68ef99fbaa7e6bea1d9a9c822. 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/5hb2jsmQhRNDNkrK2l8IyM.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/5hb2jsmQhRNDNkrK2l8IyM.
{"copyright_id":"0x29ad1c5999e459d8b96c645d18aadbc0d4f84669ec18193220888c3f37786d7b","isrc":"GBKQU2145801","name":"Don't Doubt It - Radio Edit","registered_at":"2026-06-18T09:58:39Z","spotify_id":"3cqqMYaaLz5p5stmhGKZXs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ad1c5999e459d8b96c645d18aadbc0d4f84669ec18193220888c3f37786d7b. 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/3cqqMYaaLz5p5stmhGKZXs.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/3cqqMYaaLz5p5stmhGKZXs.
Toolroom Radio EP715 - Presented by Mark Knight