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 0x1d05f46d99e170db3ad8e5d753a83476df272e5185e50a26390a570c4f05d6dc. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1623dcd4-f524-45e2-8fea-7b788770586e.json and https://artists.proofprofile.net/proofs/artist/1623dcd4-f524-45e2-8fea-7b788770586e.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
毎日新聞落語会 桃月庵白酒 「火焔太鼓」「鰻の幇間」
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 0x45ecd9e3a1e23c733ba62c732f310a8d75e5f1c9fc4dd0a4d6fe12919b6a2688. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP401200001 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea67d1b28d5c2d46985bf2a7a26577420c0a52072364ea93b30e203617c65efd. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP401200002 — a six-check JSON result.
毎日新聞落語会 桃月庵白酒2 「抜け雀」「船徳」
桃月庵白酒落語集 牛ほめ / 禁酒番屋 / 五人廻し
牛ほめ - 〔収録〕平成24年12月14日 横浜にぎわい座
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcc119d4e8c10029c82a63c6bbc448986926529f6420678b967fec222c54a0f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO01258810 — a six-check JSON result.
五人廻し - 〔収録〕平成24年12月14日 横浜にぎわい座
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5174187a0b61966079b89d364ab298c519fe4eccda6c3a295e0c76c140ee6239. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO01258830 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c3a89ba2adf33d0bf9b182563a330c01a181b3064b7a1083f56feea31ee286. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP401400018 — a six-check JSON result.
毎日新聞落語会 桃月庵白酒3 「らくだ」「死神」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec77b7e8d08ba44bed1746391504cda94931012c39824c2b5ef7c6be36b8527. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP401500184 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e7910da4c21be1945034e259e501980753e06bb41d7569d1f644bc84c6c8e1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP401500185 — a six-check JSON result.
桃月庵白酒落語集 時そば / だくだく / あくび指南
時そば - 〔収録〕平成27年1月9日 横浜にぎわい座
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd3fc7a71c42e681d00c09afbd16991e58578af007469c31a0d90dcb83c49e6. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO01538360 — a six-check JSON result.
だくだく - 〔収録〕平成27年1月9日 横浜にぎわい座
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c953cb80d10dc6d833f58b0d6ae39ef9b8f6687f385b28a39e883a4e9286f6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO01538370 — a six-check JSON result.
桃月庵白酒 落語集 付き馬 / お化け長屋
付き馬 - 〔収録〕平成28年3月14日 成城ホール
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6055678e17963092aac5e211434a282b4750e6451b3c17ca528f6ee49a3ca932. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO01640060 — a six-check JSON result.
桃月庵白酒25周年作品集 白酒四半世紀 -the 25th-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bc1f2bec5566d8c2ae0702943dbfb1bba724dec1bfd6241859dcdef18f5fee. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP401700250 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e428b70b796d9b7be806043b6eceb29253c1ca0ced6c3b48fe084e16aa038c5. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP401700251 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4c9618fbb6cb1dbe31576a374c22556346c69cbd37eb4e78407384bffd4d6a. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP401700252 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31951a9e2d143ba0f5296f2fdb20da08566b7b2f5b2b34bcf39b06dfcdca033d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP401700253 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3a36d945d483dbfea03998bd6fd07d2c3885dd672bffbf1feb2fb630571977. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP401700254 — a six-check JSON result.
桃月庵白酒 落語集 浮世床 / 木乃伊取り
木乃伊取り - 〔収録〕平成29年8月14日 成城ホール
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26bc68f56810a16d28dd9f5a5f471bdb275896ca530f751d4cd3842be2cfd06. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO01733290 — a six-check JSON result.
桃月庵白酒 落語集 山崎屋 / 宿屋の仇討
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256f54ee10ba4298273d7db63e4c62ec22110dab2ac348efe94882e4e215bc8b. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP401900032 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e47ddc82f59ffa2482d87b50f0954f9a8998dc5bad2495e2ed5bc3e75f52391. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP401900033 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ae15993c1c973b5e47998a47689fc3da778d9adbb5606b54ea22fb077be60f. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP401900034 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7f2820c4a9388ab61f5ba48218a3c0ef1367f3fddaed8763e544e41a4a0693. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP401900035 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56582b8d474417db535a5f1b899c310f704e14523c4abb1e0d100cf5763e70e1. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPP401900036 — a six-check JSON result.