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 0xa7681d660d638aa44eca57d3d1496506549e8b774ddb5844f52b1db73fe388b7. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a567f768-d07f-410e-8b58-93d138598259.json and https://artists.proofprofile.net/proofs/artist/a567f768-d07f-410e-8b58-93d138598259.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
小津安二郎監督生誕110年記念デジタル･リマスター版 東京物語・彼岸花・お早よう・秋日和・秋刀魚の味 (オリジナル・サウンドトラック)
『東京物語』メインタイトル (2013年 ニューデジタルリマスター映像より)
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 0xa9d7869fce22ae7472508cfb2d33067ac0c221703059223d7b5df887e0924e3d. 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/JPZ921313887 — a six-check JSON result.
『彼岸花』メインタイトル (2013年 ニューデジタルリマスター映像より)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7928b8526386ef2e9953ec66ba97453c5bc677d9c9e7a6f352caf8ff4b15da. 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/JPZ921313888 — a six-check JSON result.
『お早よう』メインタイトル (2013年 ニューデジタルリマスター映像より)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c42d0fd2ca0b5e32fa60d27e17abd28da2b161e46f44b5c6af38f0c39ea4248. 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/JPZ921313889 — a six-check JSON result.
『秋日和』メインタイトル (2013年 ニューデジタルリマスター映像より)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251ea4c9ab193cb0f1465c1ccb40a90fce03a44974f37a90423e83157a3e77b4. 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/JPZ921313890 — a six-check JSON result.
『秋刀魚の味』メインタイトル (2013年 ニューデジタルリマスター映像より)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723a20bd31e082fc26827db876eac2455737655c2d90b2997df3159a1ecffedb. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921313891 — a six-check JSON result.
メインタイトル (『秋日和』音楽マスターテープより)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c26cec8da5b404b143b83e11f0e3f535164dd4ab64182279a96a601999c000. 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/JPZ921313892 — a six-check JSON result.
秋子母娘のポルカ (『秋日和』音楽マスターテープより)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c810824237a82c14fda845f7255936d17341acded3fb14c3b59c786bedcf7aa. 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/JPZ921313896 — a six-check JSON result.
送別ハイキング (『秋日和』音楽マスターテープより)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca53d697ed731320d0db2be8ab06c4723c8c5af84a6b994063e19b40e6766c37. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921313897 — a six-check JSON result.
平山の再婚話 (『秋日和』音楽マスターテープより)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc89547819ac40b625d66c12c6e52f9ce2995e6c478dd69af533f0e5e0789f8. 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/JPZ921313898 — a six-check JSON result.
アヤ子と後藤のポルカ (『秋日和』音楽マスターテープより)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae74314c64b6fc72a670c88e561ffa97ce55c092993c2b0431c7c4b18601386a. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/JPZ921313899 — a six-check JSON result.
アヤ子の結婚 [M24] (『秋日和』音楽マスターテープより)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4d38d472093f9ecd7e2de855f2d91f69ec48aa86d5b867599694aee1abdf83. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/JPZ921313902 — a six-check JSON result.
エンディング [M25] (『秋日和』音楽マスターテープより)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822999f6cb6461515a0623932488c97e9188157c482acce012b141763edc6072. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPZ921313903 — a six-check JSON result.
メインタイトル [Top] (『秋刀魚の味』音楽マスターテープより)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9534ced6274cb75de6f432c0e160d4c835436326cc1cc63a63a2ae53a958275. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPZ921313904 — a six-check JSON result.
平山父子 1 [S15] (『秋刀魚の味』音楽マスターテープより)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248ce5a51b6ee68bb53bc7985e14832fb6c41628d24a94ba8e4b08afc940a7cc. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/JPZ921313905 — a six-check JSON result.
「燕来軒」のポルカ [S22] (『秋刀魚の味』音楽マスターテープより)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d07602cf21c75c7ad1243d346ac8f72dec866287fdc716280575204e212224e. 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/JPZ921313907 — a six-check JSON result.
平山のある夜 1 [S32] (『秋刀魚の味』音楽マスターテープより)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fd143b91b0bbf941640bc7d2543130980b91c8a6b55b4825033cabf026166a. 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/JPZ921313908 — a six-check JSON result.
平山のある夜 2 [S37B] (『秋刀魚の味』音楽マスターテープより)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89df5dcc7debcc16a181510870ca93fa44ca682f92681c67fe28952a232b77f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPZ921313909 — a six-check JSON result.
郊外の駅で [S51] (『秋刀魚の味』音楽マスターテープより)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e3c6492c0a005016d70cfb63b116e6dafdac3ba3b91d2e4b5a201312103dc3. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/JPZ921313910 — a six-check JSON result.
平山の決心 [S62] (『秋刀魚の味』音楽マスターテープより)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d9eacc609b5d48ef22e48e70cb8b8d5e1872846f0327beca8581f4734f1532. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/JPZ921313911 — a six-check JSON result.
「かおる」のポルカ [S66] (『秋刀魚の味』音楽マスターテープより)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578d5c9fd2cc1dfa93a841de455c573a977d446f59f5c9fe475627516310f81d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921313912 — a six-check JSON result.
路子のたびだち [S88] (『秋刀魚の味』音楽マスターテープより)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5961654b0d5bdf0b5ce912c1c6133c30d0ad0920afb62a29077ac720cc0c242. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPZ921313914 — a six-check JSON result.
三たび「かおる」へ [S89] (『秋刀魚の味』音楽マスターテープより)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59893574493984159cddbd1697f3ad0a3bc54151a7a384928114c88536a141ee. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/JPZ921313915 — a six-check JSON result.
エンディング [S94B] (『秋刀魚の味』音楽マスターテープより)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64629213d88d17ff75f51a0608297ec2a2e7e17f6be3272abcb59a289ce349e1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPZ921313916 — a six-check JSON result.
『東京物語』メインタイトル (『オリジナルフィルム音声より』)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ef704a9880a9a19f9233ede3df76003affea524afd81c52f87cd3bfbb64c2a. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/JPZ921313917 — a six-check JSON result.
『東京物語』エンディング (『オリジナルフィルム音声より』)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5baaf283366d47719ab310c82e66c7886c23c2fd4c6ae34ec6c74896cc0217eb. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921313918 — a six-check JSON result.
『彼岸花』メインタイトル (『オリジナルフィルム音声より』)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7a4309260bc2333c333651b3977dc87ff4cf84a6d4cd07b14224fbf83777b3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPZ921313919 — a six-check JSON result.
『彼岸花』ゴルフ場の平山 (『オリジナルフィルム音声より』)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57f61ecfc87fdec18ad7ba67c50ed612cf165c5664fc031e9381c4561e41011. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/JPZ921313920 — a six-check JSON result.
『お早よう』メインタイトル (『オリジナルフィルム音声より』)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82e8bb445c32cd59945d9fd45dc7ce71719d72e173c69886594ac6df07a87b9. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921313922 — a six-check JSON result.
『お早よう』ある朝 (『オリジナルフィルム音声より』)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff63e647be3c213c9488bf1286a444000a44767c409eb73f254b858f9e027d83. 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/JPZ921313923 — a six-check JSON result.
『お早よう』エンディング (『オリジナルフィルム音声より』)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6232d43bfc2c83e4a1bcefa429478d3d71275ad572825d63fd902e9ee21905f3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPZ921313925 — a six-check JSON result.