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 0x2dd0b08e768d07ca5dee1bfec5e186cbd5df9529817b9422d2204c9fc57e7839. 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/5a3a456e-bb6a-4c03-930d-e09fc50e53b2.json and https://artists.proofprofile.net/proofs/artist/5a3a456e-bb6a-4c03-930d-e09fc50e53b2.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
J.S.バッハ 無伴奏ヴァイオリンのためのソナタとパルティータ BWV1001-1006
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 0xe8fda4a5c6e65ce165fbe8eda7f03208aacc3e4e78fd237466241ac6b40ab12e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI01872260 — a six-check JSON result.
アルマンド(J.S.バッハ:パルティータ 第2番 二短調 BWV1004)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7e50cefd5bf34914052a3b201834fcf67b15e373649fa96803cd8671273b48. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/JPVI01872420 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cc8532217e080e0c3267179603e754855650d82ae71adcf23a60a901a33331. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPVI01872270 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef7ef56626b5c88ca351f4ee4f85d360e6e490e68362dbeedbbd0c7fac4c2bf. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPVI01872290 — a six-check JSON result.
シャコンヌ(J.S.バッハ:パルティータ 第2番 二短調 BWV1004)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902db3722921cf58da0d72e98364ca7ad4b2a31f9efbec3afa6ac7955970a02d. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI01872460 — a six-check JSON result.
サラバンド(J.S.バッハ:パルティータ 第1番 ロ短調 BWV1002)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb93b9372015ca925a79b9efe7bedb2435e88144c8aa5b3e98b595d8851b0a19. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI01872340 — a six-check JSON result.
プレリュード(J.S.バッハ:パルティータ 第3番 ホ長調 BWV1006)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b3a2267299e9e0641243924169c0449cba6e7a9866fc9b6fcb4b2dae33260d. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI01872510 — a six-check JSON result.
ガヴォット・アン・ロンドー(J.S.バッハ:パルティータ 第3番 ホ長調 BWV1006)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3bc20627d21a0982719f3f50d892651c0ce6922dd55d94e7afc976d38d1a2d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI01872530 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70552d162d37b050bd0c2323fdb83040bae02668ecd96a71c207a54e10f3e05f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI01872390 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159b01ec99c7aecec5e98da24a819a66e534d4b36d0cee56e777627cc0d5bc36. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI01872410 — a six-check JSON result.
ひばり(ディニーク/寺嶋 陸也 編)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfc9788e80374bcf59bbd810e98751f6940bdb0884b29ce6acefb671f63f694. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/JPVI00706610 — a six-check JSON result.
ヴァイオリン協奏曲集「四季」Op.8協奏曲 第1番 ホ長調「春」 I.アレグロ(ヴィヴァルディ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b439a065acf5926248bd9e52f873ffb4fd7d9583e1d2a79b7407af68168eaa. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/JPVI00538670 — a six-check JSON result.
ヴァイオリン協奏曲集「四季」 Op.8協奏曲 第2番 ト短調「夏」 I.アレグロ・ノン・モルト(ヴィヴァルディ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632f3b7ddca8f0f05b40ec1c36e14aa3b1d8bc9a5226ae6e8cb70528fe03ca98. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/JPVI00538700 — a six-check JSON result.
ヴァイオリン協奏曲集「四季」 Op.8 協奏曲 第2番 ト短調「夏」 II.アダージョ(ヴィヴァルディ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7f85a98e9ed53cbba12d56c218ef2f83934ec603ef8c30f768955ae6a7465b. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/JPVI00538710 — a six-check JSON result.
ヴァイオリン協奏曲集「四季」 Op.8協奏曲 第2番 ト短調「夏」 III.プレスト(ヴィヴァルディ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd7956d4a176d6558477e9b5c77377b9ba99d7eceed5231480ea10bdf2f2921. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00538720 — a six-check JSON result.
ヴァイオリン協奏曲集「四季」 Op.8 協奏曲 第3番 ヘ長調「秋」 I.アレグロ(ヴィヴァルディ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa487b04e3b310ddb38e9047b71f54126a7da7a5b995a8d0b77c0c14fccc445e7. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00538730 — a six-check JSON result.
ヴァイオリン協奏曲集「四季」 Op.8 協奏曲 第4番 へ短調「冬」 I.アレグロ・ノン・モルト(ヴィヴァルディ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9dad8741bb0db51632bc34313af9df7983c6948a69f60c04c22306778a28f0e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPVI00538760 — a six-check JSON result.
ヴァイオリン協奏曲集「四季」 Op.8 協奏曲 第4番 へ短調「冬」 II.ラルゴ(ヴィヴァルディ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc90bbaeb9fdd5d7ba3e0697439662c1b780feb7cc6100dbc074d9fa35d147e. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/JPVI00538770 — a six-check JSON result.
2つのヴァイオリンのための協奏曲 二短調 BWV 1043 I.ヴィヴァーチェ(J.S.バッハ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba13c7ae8b57ae1471f0d3760d185d248525f9f6e7c9b36f6bc2b7829a3592f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00538790 — a six-check JSON result.
2つのヴァイオリンのための協奏曲 二短調 BWV 1043 II.ラルゴ・マ・ノン・タント(J.S.バッハ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc139fada0ca269c848cc9c5936e942a8edb58740683fe57b483755f2a3dbc62c. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/JPVI00538800 — a six-check JSON result.
2つのヴァイオリンのための協奏曲 二短調 BWV 1043 III.アレグロ(J.S.バッハ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94ac33415981fde254133011cc34a5633fb4cfe302acddfebc54eeddc7eeccb. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/JPVI00538810 — a six-check JSON result.
無伴奏 ヴァイオリンのためのパルティータ NO.2 ニ短調 BWV 1004 クーラント(J.S.バッハ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8ab702672bd9a1bf343f7cd20ce0d240f3aaa6f1aa01c525b944aaf9f28828. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00400510 — a six-check JSON result.
月の光(ドビュッシー/ローレンス編)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f71f3573a5ea354fa2ad5556bdbedef5531e7719afc0032cb8d8fb52961fe4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPVI00328200 — a six-check JSON result.
アヴェ・マリア(シューベルト)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5644456de57ccc271f6a4f1e0db3224cb663d8461f397409e4473108803737. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00302380 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45143823625891b87f4baf0133cd23f6ca8b36d3f79eff4b7dd29885ae8ecec. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00141810 — a six-check JSON result.
前奏曲とアレグロ～プニャーニの様式による（クライスラー）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19f598e675b83574e74a80f5a11d7ce935432d5ed380eef0d9b68f74bab0bd0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00141830 — a six-check JSON result.
ラ・カンパネラ（パガニーニ／クライスラー編）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79b8471b0588f7e46c4ddd1a6e18c63a5650c268e3ee900ef4bea96300db6a5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPVI00141870 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c585f2085641ee07c6e671d44936ad22bbf13c4f19f0454653a02d48258bc17. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI00141960 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3ee718a819c0c582cb9ca373a19ffa09fc3726fa5e03fe465c4bf09823030f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPVI09933690 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3db519320757d537bd15b9dd3d7584a0c2ff58c93b150047197caa5a6247d7. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/JPVI09933700 — a six-check JSON result.
ノクターン 嬰ハ短調 遺作(ショパン/ミルシテイン編)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0a774b0af21b6f9370f48d11d8eb95d4f45ae88e01c3143e71ed6e6b6b218f. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI09933720 — a six-check JSON result.
川畠成道◎メンデルスゾーン&ヴォルフ=フェラーリ:ヴァイオリン協奏曲集