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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7525ef3f9e07d64f6880cad727c908682e40fe9f450bcc7eb071ac55c597fdbd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c267041-b617-4d02-af81-87ec0f74e799.json and https://artists.proofprofile.net/proofs/artist/5c267041-b617-4d02-af81-87ec0f74e799.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Medtner: Piano Concerto No. 1 & Piano Quintet (Hyperion Romantic Piano Concerto 8)
Piano Concerto No. 1 in C Minor, Op. 33: I. Allegro
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba263342c243c1579a566bd60815d5dfc885e04e0433daffa53e9a1bfb7bf14. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY9474401.
Classic Moods - Mozart, W.A. / Handel, G.F. / Donizetti, G. / Puccini, G. / Bellini, V. / Ponchielli, A. / Tchaikovsky, P.I. / Lortzing, A.
Strauss: Concerto for Violin and Orchestra in D Minor, Op. 8 (Digitally Remastered)
The Moscow Conservatory - Tribute to Rachmaninov. Symphony No. 1
Karetnikov, Denisov, Korndorf: Chamber Symphonies
ショスタコーヴィチ：交響曲 第 12番「1917年」 ＆ 第 15番
A NRK Tribute to Erling Blöndal Bengtsson
ショスタコーヴィチ：交響曲 第 6番 & 第 9番
チャイコフスキー：ピアノ協奏曲第 1番、他
ショスタコーヴィチ：交響曲 第 11番 「1905年」
Villa-Lobos: Concerto for Harp and Orchestra in A Minor, W515 (Digitally Remastered)
Bolschoi - Russische Opernchöre (Inspiration)
Tchaikovsky: The Tempest, Op. 18 & Piano Concerto No. 1, Op. 23 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab1f696710075dd0bead7dde20adaba7f95e798c2deb50626a7b8b14bf22c04. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBJZY0900166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c3bcca8d8b328513db0e781e207d6c7c9c5fa83c971a2555e6d5006d1d297a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPG201215542.
Prokofiev: Symphony No. 5 & Romeo and Juliet
チャイコフスキー： 交響曲第 4番、戴冠式祝典行進曲
プロコフィエフ：交響曲 第 1番 「古典交響曲」＆第 7番 「青春」
ブラームス：交響曲 第 1番、ウェーバー：「オイリアンテ」序曲
ドヴォルザーク：交響曲第 9番「新世界より」、リスト：交響詩「前奏曲」
チャイコフスキー：交響曲 第 4番 & 「テンペスト」
チャイコフスキー：交響曲第2番「小ロシア」、幻想序曲「ハムレット」
Leonid Kogan: Barsukov, Barber and Bunin Violin Concertos
チャイコフスキー：交響曲 第 3番 「ポーランド」＆イタリア奇想曲
チャイコフスキー：交響曲 第 6番 「悲愴」
Symphony No. 11, Op. 103, 'The Year 1905': II. The Ninth of January (Allegro - Adagio - Allegro - Adagio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5342daf52d56f069570c83fc6b7fb90de6d451505e5752e7c267c840a759b8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBASH0524702.
Debussy/Milhaud/Prokofiev/Shostakovich - Orchestral Works
Tchaikovsky & Shostakovich: Oleg Kagan Edition, Vol. XXVII
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9ecbe3205e5643cba64fa5783aa3bbd71cf5db9cb324fb19e288500285dce2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBARU9900151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34751ef928358337b195853fe7fe3401889c2d18ef6c34d660aff5ed041242c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBARU9900152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad99ed251272e0b121621a2ce986eadb54f3dc4950fb102fc99cc7e3d2ba8e15. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBARU9900153.
Scheherazade: The Tale of the Kalendar Prince
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483cfd788a025c53f81b0d4d0ab6471f7312ed8cafef25e742e219e26371c6ea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBARU9900154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006ba33a26ef32f06efb6ce4de38596c0a051134815fbffca12e2b963f6297d3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBARU9900155.
Scheherazade: Sinbad's mighty bird, the Roc
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6ec6932f4f7fee555c697a03410770e3b9f7b4054bfe192527bda8f972ca3c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBARU9900156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f0a8cb3a9f8de0657de1627c625ada8a3b560d664ce36cf38c672910e4cce9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBARU9900157.
Scheherazade: The princess in a palanquin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72efa4bace330742bcdbb5bef0ee05e903fca1ae604f10b34133e56117a8575e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBARU9900158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ea01b75fda4afd863ac3a0797840a24c092a0350c7e17a55fe6f5a9ee0174b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBARU9900159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b61294b3ff2509761418be6606f4e00f8c0f5d0ddf3c5ff1f65292666130de. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBARU9900160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a31b411be44d2aa016fdd3f6be0833f6e9bbf2e280b4587ca9f194f4259fb54. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBARU9900161.
Scheherazade: The Ship breaks up against a cliff surmounted by a bronze horseman
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cdb0a1ec90eb7a4c650ddb6a7f1a19ac7091874a3923bd4c6547b07cf293b9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBARU9900162.
Scheherazade: Calm - the triumph of Scheherazade
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec889d2b6765b9c68a3117e1a29b0a04b6738eb50436a30660ddc3828961d37. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBARU9900163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb54df7eecc3b6e16df21c9eb024a8bf3ca7f133a0e515a47a59477e9be5c4a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBARU9900164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16661a078b63a120e835a56960e10e9625d81747aa0042b1efaf601c04fe3cfe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBARU9900165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7077dbb69a0296275541c57070cf1fde4279223ad76ce84a0b9279f933e07647. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBARU9900166.
Capriccio Espagnol: Scena e canto gitano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2f9e601f7d9b129ff23fb1fb048c868458d4c4e4378c0b535ef917eacd29f8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBARU9900167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e06bba2c359a220042183cf909f8ab98bc8fa33fe82177e202e6e12a991eebf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBARU9900168.
Prokofiev: Piano Concertos Nos. 1, 4 & 5
Debussy, Meyer & Villa-Lobos: Harp Works (Live)
Prokofiev: Violin Concerto No. 1 & Symphony No. 3 (Live)
Strauss: Violin Concerto in D Minor - Bartok: Violin Concerto No. 2
Khachaturian : Gayaneh, Masquerade & Spartacus [Excerpts] (Apex)
Tchaikovsky: Suite from the Nutcracker, Capriccio Italien & Waltz and Polonaise from Eugene Onegin
Tchaikovsky: Suites from Swan Lake, Op. 20a & The Sleeping Beauty, Op. 66a
Tchaikovsky & Prokofiev: Piano Concertos
Music of the Soviet Composers of the 1920s
Schnittke: Hymns – Denisov: Chamber Symphony
Stravinsky: Works for Instrumental Ensembles
Saint-Saëns, Milhaud: Concertos for Cello and Orchestra
Klassik 100 Meisterwerke: Klassik die man gehört haben muss
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd146219b07ba5ec693bd663cddbfa7ee6d61bf8055f6043e36019d2d11d05722. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ209901310.
Khachaturian : Gayaneh Suite No.3 : V Sabre Dance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30edf65b98017397f8b22609abcab9c3423e8ee13bc53a03ee9c5e0276c3c760. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ209318201.
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