Izumi Tateno (, Tateno Izumi, (born 10 November 1936 in Tokyo) is a Japanese pianist. Tateno studied at the Tōkyō Geijutsu Daigaku and is today a professor at the Sibelius Academy in Helsinki. After
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 0xc069e963342c47994fe248b3723b08d136e5658f2711d4159c35fa9a501df3cc. 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/f06ca023-7cb4-4e06-814d-4ce3457eca37.json and https://artists.proofprofile.net/proofs/artist/f06ca023-7cb4-4e06-814d-4ce3457eca37.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Sibelius: 13 Pieces, Op. 76: No. 2, Étude
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 0x8baeef0b4e5222a7ac82dc653014f6225d349182b568edda7605cb32d1947e8d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FIFIN9201000 — a six-check JSON result.
Sibelius: 5 Pieces, Op. 75: No. 5, The Spruce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389b6ebe86bb7ccd58170442e07c4041c008d605e098d094afb42f1422b18630. 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/FIFIN9201100 — a six-check JSON result.
Sibelius: 6 Impromptus, Op. 5: No. 5 in B Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247d8bd4c477055e592d921093f2200520a9f9d43bde96d6b8752452ccac7b05. 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/FIFIN9201200 — a six-check JSON result.
Sibelius: 10 Pensées lyriques, Op. 40: No. 7, Rondoletto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8470a6cafa5e98f2ade4947c0737247a4b7c4d9857eef072d77cbd65d40ea20f. 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/FIFIN9201300 — a six-check JSON result.
Merikanto : Idyll, Op. 73 No. 1 (Idylli)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81732272033b82326d2bfbe19dd14bb19388221f22467c368e841ad182be10b7. 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/FIFIN9200800 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5991001cc93566b1cbf5edb2afe5d5bfc82249afc7b525cf6bcc8e05b196b4bc. 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/FIFIN9200034 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4722d26f7442e994cbc462be04bf8de4c5ad955e2ae9576a624d7eee43b530. 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/FIFIN9200900 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ff05658c5eee5cac8839bb61a32e29e9c7ecdb2baf35f4abb2cb6d8ea2716a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FIFIN9200003 — a six-check JSON result.
Melartin : Butterfly Waltz, Op. 22 No. 17 (Perhosvalssi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7a198620073c30f73619f3ff392cf72e472963276372c63dcdeb1a00acd91e. 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/FIFIN9202600 — a six-check JSON result.
Melartin : On High, Op. 98 No. 3 (Korkeuksissa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf46fab8fc2b83e5f6de62a44ac0052c1e7c0ba189817c80e15ee5a8dd4b505. 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/FIFIN9200053 — a six-check JSON result.
Palmgren : The Dragonfly, Op. 27 No. 3 (Sudenkorento)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60009652d77f8888eaa95395db7a49336096a635322cec55cc2c71caaea95574. 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/FIFIN9200054 — a six-check JSON result.
Palmgren : May Night, Op. 27 No. 4 (Toukokuun yö)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66a6ab902d8a6eca78959834f756116af4a3ede7f63f44193cb779b0b311a72. 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/FIFIN9202800 — a six-check JSON result.
Palmgren : The Sea, Op. 17 No. 12 (Meri)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b16716cd0de298affa840e01b6205b1a95faaac314258b482fe7602fcce877. 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/FIFIN9200056 — a six-check JSON result.
Kuula : Wedding March, Op. 3 No. 2 (Häämarssi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9d91449c6d4e7fd00b650b4d4c0420b67b242db3f4923b3381d4dd6986f99b. 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/FIFIN9201600 — a six-check JSON result.
Madetoja : An Old Memory, Op. 31 No. 4 (Vanha muisto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310114d5f4904f8eae00ca0449cef9ba9823f2b425c03c19536abe3415e841c3. 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/FIFIN9200059 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ba8c28a76f4990f7d7fc1936e21059b2bbf53eb1897324331ce64d7a7b998d. 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/FIFIN9201800 — a six-check JSON result.
ＥＭＩレコーディングス・セルフ・セレクション
シベリウス: 樅の木 作品75-5 ([樹]の組曲 「5つのピアノ小品集」より)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb695e1f8883687849f45c5e5afc55a8d837416343e3d8f1fce9a8a483b5f49d5. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/JPTO01000967 — a six-check JSON result.
4つの小さな夢の歌~三手のための - 2.夏:8月の歪んだワルツ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7b33f82fe23dc3c60952720dc9b661304c9a95ea07bcaffbf88918c0342d86. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/JPB600714409 — a six-check JSON result.
4つの小さな夢の歌~三手のための - 4.冬:子守歌
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12eb30a5cc84d1447331c3f35296c91df5ed7d985ef87eafdd48ce84b1cb3be. 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/JPB600714411 — a six-check JSON result.
プレイアデス舞曲集4 作品50 - 2.静かなる雨の雅歌
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3926c207989422c00f1b336277a615a21b10acb09f2919d6cde51e03df30267c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB600714413 — a six-check JSON result.
プレイアデス舞曲集4 作品50 - 3.西に向かう舞曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689cd06f79785e50d6257f8a98d279bec87e9f6ee0e8fd429077cf1531a6aefd. 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/JPB600714414 — a six-check JSON result.
3つの聖歌~左手のための - アヴェ・マリア
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c5de590c9681d59798bb137ab36438f9f0d14f10665edea1195a64b2fa0c50. 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/JPB600714424 — a six-check JSON result.
Schubert : Piano Sonatas Nos. 1, 3, 4, 8, 10, 13-21 / Ungarische Melodie / 3 Piano Pieces, D.946
Schubert : Piano Sonatas Nos. 14-19, 3 Piano Pieces D.946
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35bebf721afe9139dbe61472982725ab94d8195c8435404cbd575594ade6184. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/FIFIN9900001 — a six-check JSON result.
Kaski : Pankakoski Prelude, Op. 48 No. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd299295aba81845c19aca0db8906e84df1742f742c96028c9def344748cdc0fe. 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/FIFIN9900008 — a six-check JSON result.
Schumann : Kreisleriana, Op.16 & Fantasie in C Major, Op.17
Schumann : Symphonic Etudes, Op.13 / Arabeske in C Major, Op.18 / Waldszenen, Op.82
Schumann : Kinderszenen, Op.15 / Papillons, Op.2/Davidsbundlertanze, Op.6
Palmgren : Early and Middle-Period Piano Pieces
Palmgren : Snowflakes [Lumihiutaleita] Op.57 No.2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe18ca893dec9de8f7cc0770961e8e674868077d1de4578755d65a03734caa2f. 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/FIFIN9500235 — a six-check JSON result.
Schubert : Impromptus, D.899 (Op.90), D.935 (Op.142)
Schubert : Wanderer - Fantasie, D.760 / Moments Musicaux, D.780 / Two Scherzi, D.593
Schubert : Moments Musicaux, d.780 Op.94 ; 3. in F Minor (Allegro Moderato)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81917ab5e0b8ee1370366c1630e02e32884aeb2a9118219a1225cd808f413c7a. 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/JPPC09232640 — a six-check JSON result.
Schubert : Piano Sonatas Nos. 18, 19, 20 & 21
Pehr Henrik Nordgren : Nine Kwaidan Ballads
Brahms : Piano Sonata No.3 Op.5, Two Rhapsodies Op.79 - Glinka : The Lark - Suk : Chanson d'amour
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9581c12bf5719650941b5c2d320d1d762a17a8df0eba8b1d856040a13121c977. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/FIFIN9000008 — a six-check JSON result.
Mompou : Impresiones Intimas / Faure : Nocturnes Noa. 1 - 6
Izumi Tateno Concert Live at Suntory - Hall (Schumann, Martin)
Debussy : Preludes 2 / Children's Corner
Granados : Goyescas - Los majos enamorados
Debussy / Preludes Ler Livre, Deux Arabesque, Reverie, La Plus Que Lente, Clair de Lune, Reflets Dans L'eau
Debussy : Preludes 1er Livre ; 8. La Fille Aux Cheveux de Lin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8048be8d63969e02d642667cb465056e45f3f57266bdb3e78ce5b47c9f9242f. 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/JPPC08800100 — a six-check JSON result.
Debussy : Clair de Lune "Suite Bergamasque"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43165ddf4151ec4d56705834a9aaa08bf179045ee4511ec71e42b7b2f2b35edd. 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/JPPC08807998 — a six-check JSON result.
Rautavaara, E.: Piano Music - The Fiddlers / Icons / Piano Sonata No. 1 / Etudes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43ae4b133284d6bc4c222d0677c3ffd34cde0d5b8d6d04715389ad5e21d2ab0. 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/FIFIN9100011 — a six-check JSON result.