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 0x03c5cfe574af11d662352fec1ddc512dfc211175e826398dafd81840afd7166a. 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/bd9b78cf-a25f-4705-8595-d675750dbb13.json and https://artists.proofprofile.net/proofs/artist/bd9b78cf-a25f-4705-8595-d675750dbb13.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x6ac345df9f77364c49a55314c86ce88c49e788da6ff1977ca9815ba3c3eee89f","isrc":"GBCKG0501312","name":"Sōran Bushi","registered_at":"2026-06-07T23:02:04Z","spotify_id":"2xs4e2r8YkMgxtfngprhPs","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 0x6ac345df9f77364c49a55314c86ce88c49e788da6ff1977ca9815ba3c3eee89f. 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/2xs4e2r8YkMgxtfngprhPs.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/2xs4e2r8YkMgxtfngprhPs.
{"copyright_id":"0x3f44ae0c688dbcb4270633a2890c251ebee9d8067d1806b60c5ef9bc1bdfbe56","isrc":"GBCKG0600329","name":"Musashi Mai Uchi","registered_at":"2026-06-07T16:14:07Z","spotify_id":"3xfUMC8FfQwiTgrfla2uXs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f44ae0c688dbcb4270633a2890c251ebee9d8067d1806b60c5ef9bc1bdfbe56. 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/3xfUMC8FfQwiTgrfla2uXs.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/3xfUMC8FfQwiTgrfla2uXs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d49d87d2a7d83541ee51a1129c619f8c3678cedc47342c875f721ee4bc3de4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1K3iWy3Gva61gVpE4VHiyq.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/1K3iWy3Gva61gVpE4VHiyq.
{"copyright_id":"0x1aca960c61ad39d57b519a0ec44382f9f1865d97ad6d091e4863ea366a5ca5ad","isrc":"GBCKG0600332","name":"Suisei / Hanabi","registered_at":"2026-06-11T22:30:21Z","spotify_id":"5pNalI4rFPBvV3llwIjWne","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aca960c61ad39d57b519a0ec44382f9f1865d97ad6d091e4863ea366a5ca5ad. 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/5pNalI4rFPBvV3llwIjWne.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/5pNalI4rFPBvV3llwIjWne.
Children's Songs Medley II: Kono Michi / Akatombo / Shikararete
3 Ballads in Memory of Hida: No. 1, Pastoral Poem
3 Ballads in Memory of Hida: No. 2, Tachitsubura
3 Ballads in Memory of Hida: No. 3, Sugidama
The Art of the Japanese Koto, Shakuhachi & Shamisen
The Art of Japanese Bamboo Flute and Koto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c27f4fe73ce68de667999238ab7674bcb2cee1d964f37b75b99a216c922d72. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2HWOELUCB9aVSwtJlgMObl.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/2HWOELUCB9aVSwtJlgMObl.
Music of Floating World: Yamato Ensemble
Mushi no Musashino (The Musashino with its Insects)
Rondon no yoru no ame (Evening Rain in London)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880408658283228b33d5b27c206d1c043b4655367c91630d684e58bd0bb20721. 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/5EbSNAdapqO1805RHOs5ln.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/5EbSNAdapqO1805RHOs5ln.
Kumo No Anata-ni (the Clouds Over Yonder)
Yamato Ensemble: the Art of the Japanese Koto, Shakuhachi and Shamisen
{"copyright_id":"0xffa8166ea811d3f7a61f52e5003bab19d8df0c8fb2833fcbd2a000c811b0afe4","isrc":"GBCKG0501296","name":"Kaede No Hana (Acer blossoms)","registered_at":"2026-06-22T12:43:25Z","spotify_id":"4Hr6WbENfzmiGRE6jNjwjQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa8166ea811d3f7a61f52e5003bab19d8df0c8fb2833fcbd2a000c811b0afe4. 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/4Hr6WbENfzmiGRE6jNjwjQ.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/4Hr6WbENfzmiGRE6jNjwjQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc080ef98b0e3fb401337510b2cc69aa39f8372a7e84f01a6f29b15617887e430. 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/3FgJdBcNFdIjUkZ6lcGuAA.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/3FgJdBcNFdIjUkZ6lcGuAA.
Futatsu No Den-En-Shi (2 Pastorals): No. 1. —
{"copyright_id":"0x45d49d87d2a7d83541ee51a1129c619f8c3678cedc47342c875f721ee4bc3de4","isrc":"GBCKG0501298","name":"Futatsu No Den-En-Shi (2 Pastorals): No. 1. —","registered_at":"2026-06-05T14:21:17Z","spotify_id":"2EO2S66vAcdJA0MtsAAXbx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d49d87d2a7d83541ee51a1129c619f8c3678cedc47342c875f721ee4bc3de4. 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/2EO2S66vAcdJA0MtsAAXbx.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/2EO2S66vAcdJA0MtsAAXbx.
Futatsu No Den-En-Shi (2 Pastorals): No. 2. —
{"copyright_id":"0xa95300d02d477adbb6d84e410a34653f9cc202f8e89e892699872cc3cfd854f9","isrc":"GBCKG0501299","name":"Futatsu No Den-En-Shi (2 Pastorals): No. 2. —","registered_at":"2026-06-06T13:51:58Z","spotify_id":"5TDiYPmZEXmaaf1YJALuJd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95300d02d477adbb6d84e410a34653f9cc202f8e89e892699872cc3cfd854f9. 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/5TDiYPmZEXmaaf1YJALuJd.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/5TDiYPmZEXmaaf1YJALuJd.
{"copyright_id":"0x6a6f23c4897515ab9cc5044459e415bbd97ce7047f726498c60c07f673cdb90d","isrc":"GBCKG0501300","name":"Kageboshi (Silhouettes)","registered_at":"2026-06-25T01:21:54Z","spotify_id":"2qnrQuoZEsn1x5RUSOTRXL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6f23c4897515ab9cc5044459e415bbd97ce7047f726498c60c07f673cdb90d. 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/2qnrQuoZEsn1x5RUSOTRXL.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/2qnrQuoZEsn1x5RUSOTRXL.
Yukage No Uta (A Ballade in the Twilight)
{"copyright_id":"0x140d572c37b03ca29a552074957b83b8f9c0f2070a1ec4917b80703d7ee401e0","isrc":"GBCKG0501302","name":"Yukage No Uta (A Ballade in the Twilight)","registered_at":"2026-06-10T23:20:03Z","spotify_id":"4f9AFVX5qOIqqn3irTjEdS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140d572c37b03ca29a552074957b83b8f9c0f2070a1ec4917b80703d7ee401e0. 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/4f9AFVX5qOIqqn3irTjEdS.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/4f9AFVX5qOIqqn3irTjEdS.
The Art of the Japanese Bamboo Flute and Koto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91d3f94be948180407a5fea78fadcc28ef444938459d928924e6b3c83814af6. 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/7p6pHIzj4tcKv31MJHrqTt.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/7p6pHIzj4tcKv31MJHrqTt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c6e1e8ba824c9d484ed432d043c645cd7e26ee609b67db088f3ddd6f238c26. 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/7z4egjm5qPpRPhXUmY4bTA.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/7z4egjm5qPpRPhXUmY4bTA.
Shika No Tone (The Braying of the Deer): Shika No Tone
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c27f4fe73ce68de667999238ab7674bcb2cee1d964f37b75b99a216c922d72. 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/6cPhjpkl0J7NwH0SWbjLQj.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/6cPhjpkl0J7NwH0SWbjLQj.
{"copyright_id":"0xc183f537810f04cefbdb815d32501ca4885de5b3503c9fb28e65e6ff56fc8e9c","isrc":"GBCKG0501303","name":"Daha (The Beating of the Waves)","registered_at":"2026-06-22T12:44:38Z","spotify_id":"3UQ3rzKvRrvOsaEpxs1VIF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc183f537810f04cefbdb815d32501ca4885de5b3503c9fb28e65e6ff56fc8e9c. 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/3UQ3rzKvRrvOsaEpxs1VIF.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/3UQ3rzKvRrvOsaEpxs1VIF.
{"copyright_id":"0x79d307dcdfc19b7bc5c88c00d23505147182c356cdc0bf0a4ead075f4ba690bb","isrc":"GBCKG0501304","name":"Shingetsu (New Moon)","registered_at":"2026-06-27T21:06:06Z","spotify_id":"0yTcKU7RMUj1Sa4UeHxv3r","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d307dcdfc19b7bc5c88c00d23505147182c356cdc0bf0a4ead075f4ba690bb. 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/0yTcKU7RMUj1Sa4UeHxv3r.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/0yTcKU7RMUj1Sa4UeHxv3r.
Hi Fu Mi no Hachi Gaeshi (One, Two, Three, Return the Bowl)
{"copyright_id":"0x38427a9fca7c138e4d0e86a471364a8e10398c9fa3b258cd814985984e5f6e71","isrc":"GBCKG0501308","name":"Kumoi Jishi (Celestial Lion Dance)","registered_at":"2026-06-10T09:28:20Z","spotify_id":"30XfW48F9DBnOkFa0qo7qc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38427a9fca7c138e4d0e86a471364a8e10398c9fa3b258cd814985984e5f6e71. 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/30XfW48F9DBnOkFa0qo7qc.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/30XfW48F9DBnOkFa0qo7qc.
{"copyright_id":"0xefd3e4e913ae8b2deab4ca457b7aa34634d78926cd14624f2a6f94f2f5f46677","isrc":"GBCKG0501309","name":"Gekko Roteki (A Flute in the Moonlight)","registered_at":"2026-06-24T07:29:27Z","spotify_id":"1FCPANAVIMtAext8msTESL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd3e4e913ae8b2deab4ca457b7aa34634d78926cd14624f2a6f94f2f5f46677. 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/1FCPANAVIMtAext8msTESL.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/1FCPANAVIMtAext8msTESL.
{"copyright_id":"0x71f601eab34758ef64aa669c565e80d7a96e5da63e633aab8662eb72c7e3ca0b","isrc":"GBCKG0501311","name":"Portrait of Genroku","registered_at":"2026-06-23T20:21:25Z","spotify_id":"29UYuMepXdBjDMAjNDAo9S","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f601eab34758ef64aa669c565e80d7a96e5da63e633aab8662eb72c7e3ca0b. 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/29UYuMepXdBjDMAjNDAo9S.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/29UYuMepXdBjDMAjNDAo9S.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91514955f18d49159762f28f231c43edaf775761c5e31d674d0df6f7204695a. 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/6yBjQ8QGHSbAdoUuGuIRbh.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/6yBjQ8QGHSbAdoUuGuIRbh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac345df9f77364c49a55314c86ce88c49e788da6ff1977ca9815ba3c3eee89f. 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/5IhBPvk3LJXdp0RDhx38JY.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/5IhBPvk3LJXdp0RDhx38JY.
Shirable (Melody): I. Sakura (Cherry Blossoms)
Shirable (Melody): II. Nenneko (Lullaby)
Akikaze No Kyoku (Melody of the Autumn Wind)
Morning ceremony of the Drugpa-ka-gyu Sect (extract 3)
Wu Ge Fang Yang (Fifth Brother Herding Goats)
Kumo No Anata-ni (The Clouds Over Yonder)
Republic of Sakha National Dance Theatre
Flowers in the Moonlight in a Spring Night on the River
Chung Woong Korean Traditional Music Ensemble
Clive Bell: Shakuhachi - The Japanese Bamboo Flute
Komoro Bushi, "the Pack-horse Driver's Song of Komoro"
Shikyoku Ichiban (Poeme I pour shakuhachi et koto)
Eine Reise nach Suzhou (A journey to Suzhou)
Komoro Bushi, "The Pack-horse Driver's Song of Komoro"