, born Minoru Watabe, was a Japanese enka singer. He has been dubbed "the first enka singer". Having seen Ichiro Fujiyama on stage, he attempted to become a popular singer. After he graduated from th
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 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 0x8e079792d486e4616f7f309ec95a617342bd164696c370bfc659860eecf5d940. 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/2ca79470-ae67-4b31-a5bc-04746b379dfd.json and https://artists.proofprofile.net/proofs/artist/2ca79470-ae67-4b31-a5bc-04746b379dfd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
源平出世マーチ/ホップ畑の白い道
SP原盤再録による黄金時代④ 春日八郎 ヒット・アルバム Vol.4
SP原盤再録による黄金時代① 春日八郎 ヒット・アルバム Vol.1
SP原盤再録による黄金時代② 春日八郎 ヒット・アルバム Vol.2
SP原盤再録による黄金時代③ 春日八郎 ヒット・アルバム Vol.3
SP原盤再録による黄金時代⑤ 春日八郎 ヒット・アルバム Vol.5
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 0x05e805f2d0433507f744454c1435dd99d0d6799fc7443cbdbe2c9c3634badcd4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6P41446632.
春日八郎リサイタル『泣いて笑って15年』『シンフォニック歌謡』
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb843a3a60307dbe7515463d87aad9a3cfda43ffc5cc0b09b0b0816a1dc52d86. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/JPKI00410552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bff577307379dc0ba0f4a63b5513ec732538810fdb229556bf1d45f5cdf3af. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/JPKI00410556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1094544d53a92e12519951dbb1585addbeb68211c0849fa6e8d1c8402345c3. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/JPKI00410558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbf3666b1ddb18e22392cf071b24bf5c3db000d7c249414566f7e6ca0f8d1ec. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/JPKI00410559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa903cd48b45fe1ded00dba4d6f4dc0ae51c65f6949a3083c7131fd722f6f6c3. 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/JPKI00410560.
白虎～春日八郎のすべて オリジナル・ヒットvol.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691ce1b72401acb2c84140196531217aa6c58aa8fcdd14f98b8bfd18e91a88b8. Chain 2 (Bitcoin): anchored in block 957957 (2026-07-14T05:10:34Z), 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/JPKI06943006.
白虎～春日八郎のすべて オリジナル・ヒットvol.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98905d14057596b4dc5d27729e9c718781ac581dc0264ade200d0550983dd461. 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/JPKI06943005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03a5ee2036507d7bd47cfb67d94d7d530883229a025c501db37e14dd5e3d061. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPKI07252279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0085508157bf986dcaed6fb583a9b1d04e76e6475f06711381bc1391c1b223. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/JPKI06942978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d535a43981d05a1a15c6da77a9efb9fccb3b9c30aad2faa990eec199e1543d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/JPKI07045662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d42aa3b03bf0337979a7414166d91e55bc4f2b16ef116371d6412942edbd1c3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPKI07561794.
白虎～春日八郎のすべて 昭和の流行歌を歌う
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac07b507734be79b91251da9f035e019e536074f1320139d661a555aa4dfd64e. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/JPKI07148022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e647a98e792096799b3eabf5f6a0e12398b4416f5914a3093a0aaf03bddab5c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/JPKI07045384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe742ee6938c642435bcee4be7b59eedf46783c8697475c6f33eb5484410c23. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/JPKI07354956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2065278dc9533b11642a108e335fb946fbcc28088175b549ed5ca83c281dca. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/JPKI07974027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c51d6761f474f8a9846d34a734f989563d52388ea7bb2b8b215a193c2b2681. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/JPKI07354994.
白虎～春日八郎のすべて 発掘！レア音源集
白虎～春日八郎のすべて 三橋美智也を歌う
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c5fd75797aefd3fc41bfc07e63b4393e30ad77ac13d0132458bd9a8bd00e6e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/JPKI06944451.
白虎～春日八郎のすべて オリジナル・ヒットvol.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de1ab71fe58828b72d91825c4dba08084ccd96da004db76cabe8ae8285503d7. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/JPKI06942983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fbee9450951e42cad4dcd6a3f7f658e665aee621dca99cdacd4d7f5c7f5137. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/JPKI07252276.
Vintage Japanese Music, The Modern Enka, Vol.2 (1951-1953)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8937e6fc0ca597774c865a8e4068324afe1653a68e3d7933d97fd06771d78821. 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/CA5KR1579903.