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 0x4eb271ca7aa8c69ab11eb86cc8068fce9f9637877b2cc7ad320c1d14f01c9ddb. 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/710e4de5-e19e-43dd-a43d-ac7db963225b.json and https://artists.proofprofile.net/proofs/artist/710e4de5-e19e-43dd-a43d-ac7db963225b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hoshi Wo Kakeru Adventure 2 ~ forever friends, beyond the stars! ~
{"copyright_id":"0xd4cf91a701794e56cf1a191c717be9235b9ca60da6800a31988b0f9ae1293f70","isrc":"TCJPA2440240","name":"Recollect Lines - instrumental","registered_at":"2026-06-19T18:24:36Z","spotify_id":"4dgtVQIVOJch3cV3zFxtKo","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 0xd4cf91a701794e56cf1a191c717be9235b9ca60da6800a31988b0f9ae1293f70. 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/4dgtVQIVOJch3cV3zFxtKo.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/4dgtVQIVOJch3cV3zFxtKo.
{"copyright_id":"0xdf59fcc679b56adccbaef07a99cf36f1b824fc2fedffbf137be90b7d04cd1507","isrc":"TCJPB2405168","name":"Tricolor circuS","registered_at":"2026-06-26T02:00:46Z","spotify_id":"1rubHArZ4CDDhg4PSkAtWv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf59fcc679b56adccbaef07a99cf36f1b824fc2fedffbf137be90b7d04cd1507. 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/1rubHArZ4CDDhg4PSkAtWv.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/1rubHArZ4CDDhg4PSkAtWv.
{"copyright_id":"0xc9f3a9ec55867716eb2d008471d25c412dbf94a3e44844606f931b2b4b17fbd1","isrc":"TCJPS2243183","name":"Kokokara Hajimeru Prologue","registered_at":"2026-06-20T04:37:41Z","spotify_id":"4DtTF1sdWausBLtifDr7iP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f3a9ec55867716eb2d008471d25c412dbf94a3e44844606f931b2b4b17fbd1. 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/4DtTF1sdWausBLtifDr7iP.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/4DtTF1sdWausBLtifDr7iP.
Piano To Flute Notameno Ensoukyoku 'Sakimori' - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3edde38718b221c3305a0252961b9ca2158d4a03126213e87568e8826dbb53a. 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/4P1Abw55Emse30EjtC8472.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/4P1Abw55Emse30EjtC8472.
AAAA Ayatsugu_Otowa Umeboshi Chazuke Kagetora. cosMo@BSP xac s-don hapi polysha Tedjimo yomigY vs. Morimori Atsushi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea47e741166812f30764a22a4f7f6a528fecd1b2885b6b83fdcdd36680745968. 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/0FHpOitMKZT6J8bunSvkXN.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/0FHpOitMKZT6J8bunSvkXN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5e82396dbfc27958dc61450016d0a29bf7c33bb4077a23da598ddcb0f77a13. 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/71k8VUMl86RyprHnFqF4i1.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/71k8VUMl86RyprHnFqF4i1.
{"copyright_id":"0x70c614fe6a4b7a494a7ee8de5b2354454c61b8de1827821f70f919f50ebeb2bd","isrc":"TCJPL2028569","name":"name entry","registered_at":"2026-06-26T21:04:34Z","spotify_id":"3dYqA6JP2kjqPP4ZYIkaYD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c614fe6a4b7a494a7ee8de5b2354454c61b8de1827821f70f919f50ebeb2bd. 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/3dYqA6JP2kjqPP4ZYIkaYD.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/3dYqA6JP2kjqPP4ZYIkaYD.
{"copyright_id":"0x3e19f2638ee2d0d1f32f4ac5a722b78773db606fe6ed018cc2fb4b41d7e5cc29","isrc":"TCJPL2028571","name":"Show must go on !","registered_at":"2026-06-26T21:05:48Z","spotify_id":"7HrA9hN3Iwqb55zQqasXwb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e19f2638ee2d0d1f32f4ac5a722b78773db606fe6ed018cc2fb4b41d7e5cc29. 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/7HrA9hN3Iwqb55zQqasXwb.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/7HrA9hN3Iwqb55zQqasXwb.
{"copyright_id":"0x5daabcef91b7fa61c7e48340626dc604c6f5fe95c5ca91a6d91d2a20f7546277","isrc":"TCJPL2028572","name":"Hoshi no Otoshimono","registered_at":"2026-06-10T16:34:31Z","spotify_id":"2c5YvvdIcoRntslCIEVcex","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daabcef91b7fa61c7e48340626dc604c6f5fe95c5ca91a6d91d2a20f7546277. 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/2c5YvvdIcoRntslCIEVcex.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/2c5YvvdIcoRntslCIEVcex.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e896c4995d68b3ac304961464c4145e4e6427a8abb03577e339ff01e2cc502e. 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/5eWWoccb55Mqu8rWpUAjqU.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/5eWWoccb55Mqu8rWpUAjqU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077b9068dbc1b3af103ea2f71aa07272d5a8b6f36b4abb387cf5496711d9d9b7. 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/03eyEi4Of1tAtEyvMSzvAd.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/03eyEi4Of1tAtEyvMSzvAd.
Bokutachi no Tabi to Epirogu - Long ver.
{"copyright_id":"0x1ec9bc5d062cb4af88b3a4bea006e5b01c9a077c378907808d65749a927c4aa8","isrc":"TCJPL2028580","name":"Bokutachi no Tabi to Epirogu - Long ver.","registered_at":"2026-06-18T14:49:35Z","spotify_id":"6oF2pYwYHhJKw4ZtAi3LPA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec9bc5d062cb4af88b3a4bea006e5b01c9a077c378907808d65749a927c4aa8. 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/6oF2pYwYHhJKw4ZtAi3LPA.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/6oF2pYwYHhJKw4ZtAi3LPA.