, is a Japanese keyboardist, lyricist, composer, arranger, and record producer. History Kobayashi started his professional career in the late 1970s. After working in the backing bands for singers suc
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x89698e6dce1a3e0ab6ebc259d1be9632cf456ac21176b5561162e20b06608bf4. 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/23f9fc1a-8955-4730-8560-e68974ffdee9.json and https://artists.proofprofile.net/proofs/artist/23f9fc1a-8955-4730-8560-e68974ffdee9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b658a7b8153358e6372abcd79542081d99f325854bbfb4612ef030dbc20de4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPSR00003103.
Swallowtail Butterfly Original Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308379103e895cdc9c52a32b68ecb0d9941d6d927194d0bb45f8bf16de5a4c4d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPES09600780.
「世界から猫が消えたなら」オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc43a30c72339ae3758abfcbaf341274a2ca5f4e851ac1d5d8cd27fe50cd345. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU901601058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5633715436471ca8ecb7cd9899400e43fe6be718a568744fbba7b7f8d2590c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU901601059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7243fbeecbb20bedb83730e44a4fd7efc62fcc44df20f0a292f31c91600def4f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU901601062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81be8e4f6be357c1bf8ec5c135284f4ccc43653a0f30fbb30d8a7a71e0bc9556. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU901601070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1bd6a8f15d5609def06aac519965fc5c8cbba642b6ed26824102d688f3ce86. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:36:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU901601074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf956b918c1ddaf49160319cabc9dc806fa8eb3e83756604c2d22cdc1399b57. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU901601103.
ラストレター オリジナル サウンドトラック
四月になれば彼女は (オリジナル・サウンドトラック)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02414df184b174aacde447f6f3198e9721e7d1cfdb074dfe593ddf3be7269511. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:47:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO02400913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb7e122e3c3837db4a37086c8b8914d54803bdd30982954f01e5a01b2453a1e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO02400914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b25807e6005553c2ca5a0d8a15190ca41aca3893a3d2a68ece7141ad4ede18b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO02400916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f2ff387612540181c7937edd96892cd79f371bc75b7688df81774c6a879423. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO02400917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16aabb2b6430142cf4242a68a04d9080e2603f2713094f37f0771db51b1a137d. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO02400920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd0c5eec4b62821acc6158917c1e1009d7552996a49c7a14d21823fc953ae9e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO02400921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdfce908308ea1e277b35a6ed49eb6710c3dac61327dbf4946d6eb34fe707ad. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO02400923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5420070f6d39676cf51aeeb8cc8bda9c5f130a0d7115a3d94dc43aefaac7b12. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO01622213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771dd8d8c4caaff456905e1c95e1a3d4431992d80963e927dde307dbe3fd5544. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPTF01619901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d05663befee9abc12134c50460d061fe1b26117535d5f61c1cb7b1e47352ef. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI01903399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d05663befee9abc12134c50460d061fe1b26117535d5f61c1cb7b1e47352ef. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI01903399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0135af03cf5560e84b37d87be1220ee7b36e8353f592fc8304a3cd6a1e013dae. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP301900694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe360fafcc921d394b73d573602df1f192e9a1da047d630ad4d1d47f1a98047dd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP301900695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89d90988d2647e8827ebfc34780c34b844d016e9847f63c4ed52736a3d88883. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP301900697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc629410e327e88749537e1d996bf5ff1b265a38a1c358c0bc7cda14c98a37b7f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP301900698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c6a4b2f060184e37f5f92e058eee4ecfad7c2b4464903871c844093730a749. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP301900699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee3d5681598d387c0334ce23ce39432c90962edf1e3fa28612dba4619013c61. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP301900700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b334ec7263711d9dbfe2996717fb5dd33f65f4af09887f31c46419244b2482. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP301900701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c4a3cb729fddf95d2f35c11cc7930c1b4b8d16630f18f70ab210a279216bc5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP301900703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99943568fee8f6f4d25221e9b426edf47cbd5abbb069ea3d52cac9e1c0350dc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP301900706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8261ede20b3c62c7079f12bb3643b5e38ba8321b0cdcc7deab92899f77476d16. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP301900696.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9040405896282129381bfe7c40098fa92319f9b1ec4544ebeb57fdb857474bb1. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP301900702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76527739f6f3b20a09b25c24e20e5b3fd79ff152a939552718196d870f38edd0. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP301900704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e542e724afc7756b781da59fb1044b2d03ea5f079e05d98da058403cb790c2. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP301900707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7848da0026b63ee1eb0a6ae459b8dfb9a6c8a79d5205ed2683f9e51caef89d7a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP301900708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb231855a85b0af26e30e7fc3346cd8007dab633dcf1d1dc9656bdc8fd8c3943. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP301900709.