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 0xb9f25b8137be2f74a5e292cfbeba7bf84360179ed7fc069a7834a8fce1a09080. 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/0707e375-18ee-45ca-aa7c-7a2d45f7525d.json and https://artists.proofprofile.net/proofs/artist/0707e375-18ee-45ca-aa7c-7a2d45f7525d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
夢もどき／大川栄策〜韓国メロディを唄う〜
舞酔（まよ）い雪／江差・追分・風の街
わたしのソウル／星降る京釜線（キョンプセン）
スーパー・セレクト・シリーズ 赤い酒
25周年記念オリジナルアルバム 酔いぐれすずめ
おんな・恋歌・こころうた 吉岡治作品集
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 0x403b13bc825e1bf4872936954ba0270418c19f75d7214dafcd150a52d6d4d0d0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPCO08206690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0591e8c6dc560d69825011f14c1e85dfc744416a26d9b3e0cb24ef1528681b. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:12:29Z), 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/JPCO09757560.
歌手生活30周年記念アルバム・能登の恋歌
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508a1ec0eabd6b40d7ab888da52cf522fc831f136b44201519402d9a67278dd9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPCO09845380.
大川栄策歌手生活35周年記念・古賀政男生誕100周年記念 女が生きる人生の愁いを唄う「赤い酒」
大川栄策歌手生活35周年記念 筑紫竜平作品集「新道」
大川栄策歌手生活35周年記念・古賀政男生誕100年記念 目ン無い千鳥
大川栄策歌手生活35周年記念・古賀政男生誕100年記念特別企画 男の純情
大川栄策歌手生活35周年記念 流し唄
歌手生活40周年記念オリジナルアルバム 「旅路」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c6db3567b902cdaf699f402341bed354c9ff09393fb4ae79b5a673f12b7d3d. 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/JPCO00824610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d89f12e247ed023f904f83c00b51161b12341774024f36ccdb02a07ae31ebf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPCO08107720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c63865e54c63060c7c97c66e34d958b4c92dfb9f31b2e78c93b3c5ff4bacb7. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:34:35Z), 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/JPCO08831540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714b66890789b0c0d6b40b1a2f2cbfb9b6151c66c9bd8357033524de16654942. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:27:53Z), 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/JPCO00935460.
古賀メロディスーパーベスト 〜思い出の記〜
古賀メロディ スーパーベスト II 〜無法松の一生 (度胸千両入り)〜
大川栄策全曲集 男一途、あばれ舟唄
古賀政男生誕110年記念 古賀メロディ スーパーベスト III 〜影を慕いて〜
大川栄策 ダブル・ベスト☆オリジナル & カバーズ
スーパー・カップリング・シリーズ さざんかの宿 / 駅
大川栄策 全曲集 みれん舟 / 一途な女
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e613689f04d4ae1693636c535e5a869511c91b0d802b6f04afbf7b25aebcfb. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:58:04Z), 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/JPCO06909450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b73813b4000c889a3182d0a7c724b31aab56afe560d9048d14ea67176d0c6f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPCO08523750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac8aee3796d6610585bbfa0f027b712a650c73610a6d8384e4e2760403ecd3b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPCO00511960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4a69d85f29f98376a0ffad4a86a6e1ecf8523a534740a0993be5241a706a4a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/JPCO00322100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd864f9ac55b5b065b3375779adb44cf46bf580a1218e5dbc42ee1c0de85c18. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/JPCO08925400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bd062346d12723f09604183830403ca523b14b589af3859eabdbaea5c0c581. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T05:04:17Z), 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/JPCO01820260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878498d3d354368634a1df5194aa75eb0107d999817296e1de086f5214fa203a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:03:17Z), 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/JPCO00717920.
思い出の記 / 筑後川エレジー / みやまみかん小唄
大川栄策全曲集 雪ノ花、面影しぐれ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd3805f128798dbd154c68c1c632406b3e19e525b0a2b8307dc006fc05ecef8. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/JPCO02217950.
大川栄策全曲集 男泣かせの雨が降る
大川栄策 古賀政男を唄う 〜古賀メロディ50選-Vol.1-〜
大川栄策全曲集 なごり雨、きたみなと
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf189abcbcd16fc5fc86651d741891a1c9ac7ae5c9367d42feb8028f5ce73f5d4. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPCO02400930.
古賀政男生誕120年記念／大川栄策デビュー55周年記念 大川栄策、古賀メロディを唄う 〜古賀メロディ50選-Vol.2-〜