thumb|George Szell, 1954 George Szell (; June 7, 1897 – July 30, 1970), originally György Széll, György Endre Széll, or Georg Szell, was an Austro-Hungarian-born American conductor, composer and pian
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 0x24bcffb1afaf7d39a8777460930660bc84932480da753dee52355fef3962a92e. 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/ee6db78e-5391-4df6-804c-e3bc1bca29b8.json and https://artists.proofprofile.net/proofs/artist/ee6db78e-5391-4df6-804c-e3bc1bca29b8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart: Piano Concertos Nos. 15 & 17 (Remastered)
Piano Concerto No. 15 in B-Flat Major, K. 450: 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 0xe5f693d6c88be9b6b1228c5d74c3532c7cff06f2da4fa4ddf397186a7f6afb72. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11703704.
Piano Concerto No. 15 in B-Flat Major, K. 450: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf256d29bf00ed83ffb832dea39dfd3fdf0ef2f1299803a44daa421f0c7fc6d4a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11703706.
Piano Concerto No. 17 in G Major, K. 453: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaea1b0e28078461d32ed7f134f257621737658bdfec4f2f9419c3f06004fc25. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/USSM11703708.
Piano Concerto No. 15 in B-Flat Major, K. 450: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a1da9523a5af3c07cc5d83ca7e7a126356866aa75f7f49070675d0d2e1ef40. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11703705.
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
Piano Concerto No. 17 in G Major, K. 453: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd458afb148282edbf4da3993e57ea5951ed809a7813ea9ab8e4d1f212785c0e3. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11703709.
Piano Concerto No. 17 in G Major, K. 453: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4e9af102ee4f1386d95caa71d96f03a65904bf2ba1eb3ac01189532508d077. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11703710.
Handel Favourites – Arrival of the Queen of Sheda, Water Music, and more – Mackerras, Szell, Menuhi,n Somary
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34745598d88242434c7bdd7c0e7b74bb47943d62ad58879f470b183842fb19b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX761734003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1088264d2418b88feb666da4cfea833266c8d0515e1fc47060086814eb1590ec. 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/USX761734006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa1969e4edd23a84fbbcf1092cb67b44c2f358821a9c40169fc80af23d4c92d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX761734002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5be54fd2ea7aa0b62cf9f4c0a6277940c74c0e76207c900a0defc982005105. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX761734004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda09509a1d14c4f8de0a1b7731945c19eb28ffb58f5b7ef0224145c909a6bcd2. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX761734007.
Mozart: Symphony No. 40 in G Minor, K. 550 – Brahms: Symphony No. 4 in E Minor, Op. 98 (Live)
Mozart: Clarinet Concerto in A Major, K. 622 - Strauss: Horn Concerto No. 1, Op. 11
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Horn Concerto No. 1, Op. 11: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9561ead718d3dd5ebc78e3bddee963f378133ac182be5867321a12e08aba40b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM16100136.
Clarinet Concerto in A Major, K. 622: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0512986fdbf0d91277475d8514efb03c5887cdaf6b8fbe1efe954024097cad2. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10412818.
Clarinet Concerto in A Major, K. 622: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171cb8d6e3dc54656748e071f4a3b95ea6bd22d87ff3bd2053f99bf89ff62085. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/USSM10412819.
Clarinet Concerto in A Major, K. 622: III. Rondo. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33579db032cbdcf4d259a2466b9b5ef83aa9ec80974b4ca03082e99658ce476a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10412820.
Horn Concerto No. 1, Op. 11: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe787eaa1e520a0cfaf6ffcaa8148c6b3ad0db59025ef979b22dd897fea9d7709. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM16100137.
The Richard Tauber Collection, Vol. 10: Opera Scenes (1927-1946)
Beethoven: Violin Concerto in D Major, Op. 61 - Lalo: Symphonie espagnole, Op. 21
Weber, Barber & Beethoven: Orchestral Works (Remastered 2023) [Live]
Slavonic Dances, Op. 72, B. 147: No. 2, Dumka
Mozart in the Jungle, Season 3 (An Amazon Original Series Soundtrack)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77dd3bfa89c9efe375bfadacc6854784db9914175f20189cb28d592c57a8233. 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/USSM16600669.
Polovetsian Dances from Prince Igor: Introduzione
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e777a871fe7c048271dbbf245b221de184644d9199f38fe5f1997d5aa8fb9c. 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/USSM10014577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b4be5d82eec9cfffc08ec839045ef6bb65b5c6977a0c4007bd4a7f2071db76. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076912591.
Piano Concerto No. 20 in D Minor, K. 466: II. Romance
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Eine kleine Nachtmusik - Serenade in G Major, K. 525: IV. Rondo. Allegro
Ich mag keine Klassik, aber das gefällt mir! Vol. 3
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