300px|thumb|Hermann Abendroth Hermann Paul Maximilian Abendroth (19 January 1883 – 29 May 1956) was a German conductor. Early life Abendroth was born on 19 January 1883, at Frankfurt, the son of a bo
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 0x625c39a27dac7f6ac6d0ea202cd4aa3306e9655d354ece71d962d34653f53403. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/580f73b6-1554-42e9-a8b9-aaaddf939fdc.json and https://artists.proofprofile.net/proofs/artist/580f73b6-1554-42e9-a8b9-aaaddf939fdc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Piano Sonata No. 19 in G Minor, Op. 49, No. 1: I. Andante
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 0xdad693ff850d5f6b8db1d20fb9abf3ed9a063ac9d1e2480d6fbcc4ee0795888a. 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/DEAD61603049.
Piano Sonata No. 17 in D Minor, Op. 31 No. 2 "Tempest": III. Allegretto (Recorded 1951)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe145831be74342780b72d31c6db1c8e811b3f217155e0a86a603ee557091368d. 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/DEAD61603041.
Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": I. Grave - Allegro di molto e con brio (Recorded 1947)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15a8d0f1e217f7b188d39ec468d0dc586eb7458b6b1740ae21069c8b2261c4d. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD61603009.
Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile (Recorded 1947)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fc536a37100a2782f1be4119ed7850042d944a85f95f1ef56bf17321212f7f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD61603010.
Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": III. Rondo. Allegro (Recorded 1947)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d67c744b33f3373a79160a6b7488a9fa504edf37f45d3fcbc496ee6685c357. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DEAD61603011.
Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": I. Grave - Allegro di molto e con brio (Recorded 1959)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985aff376cbb70731c746ae6861b221a7ae5ed6237cf725d9a9647633bef11bf. 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/DEAD61603012.
Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": III. Rondo. Allegro (Recorded 1959)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8651d23df66652ac910672b8cd0419385a71c8e9b40c4b212c86ac2eb9766d8f. 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/DEAD61603014.
Beethoven: Piano Sonatas, Piano Concerto No. 3, 8 Bagatelles & Choral Fantasy
Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d8c17a62771c8aa9f475d54728f0b19bfaf13b3d18d3efdc6ec2147c6a0d97. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITCC51100445.
Hermann Abendroth the Supraphon Recordings (1951-1952)
Haydn & Mozart: Orchestral Works (Remastered 2022)
Beethoven: Orchestral Works (Live) [Remastered 2022]
Beethoven, Symphonie n° 9 "Chorale", op. 125 en ré mineur
Beethoven, Brahms & Bruckner: Orchestral Works
Symphony No. 3 in F Major, Op. 90: III. Poco allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e84de423d7c7955fdb6a581c78043eadca82645fe8e4022439b36f71def7a5. 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/DEAD61900033.
Piano Concerto No. 20 in D Minor, K. 466: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ee9d1a820d3be9b3d501e5f71ab8ba024c9d5f2275b8cebf8905a8dce2b128. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USB8U1517483.
Wagner: Die Meistersinger von Nürnberg (Live)
Humperdinck: Hänsel und Gretel (Hansel & Gretel) [Recorded 1944]
Wagner, R.: Wesendonck Lieder / Schumann, R.: Symphony No. 4 / Tchaikovsky: Variations On A Rococo Theme in A Major
Beethoven: Symphonies Nos. 3 and 9 / Piano Concerto No. 4 / Schumann, R.: Symphony No. 4 / Brahms: Symphony No. 4 (Abendroth) (1939-1950)
Beethoven / Brahms / Bruckner: Symphonies (Abendroth) (1939-1949)
Schumann: Violin Sonata No. 2, Symphony No. 4
Beethoven: Violin Concerto, Violin Romance No. 1, Violin Sonata, No. 7
Beethoven: Violin Concerto in D Major, Op. 61 & Violin Sonata No. 7 in C Minor, Op. 30 No. 2 (Live)
Hermann Abendroth Conducts Beethoven and Tchaikowsky
Beethoven: Symphony No. 9 in D Minor, Op. 125 "Choral" (Live)
Sibelius, Bruch, Schubert & Paganini: Violin Works
Sviatoslav Richter: Great Piano Concertos (Live)
Sviatoslav Richter Plays Piano Concertos
Beethoven: Symphony No. 9 in D Minor, Op. 125 (Live)
Sviatoslav Richter Plays Piano Works by Beethoven: Triple Concerto, Op. 56 & Piano Concerto No. 3, Op. 37
BRAHMS, J.: Symphony No. 1 / Variations on a Theme by Haydn, "St. Anthony Variations" (Leipzig Radio Symphony, Abendroth) [1949]
Beethoven: Symphonies Nos. 9 & 1 (Mono Version)
Tchaikovsky: Symphony No. 6 & Orchestral Suite No. 3 (Excerpts) - Schubert: Symphony No. 8 [Remastered 2024]
Triple Concerto for Viloin, Cello & Piano in C Major, Op. 56: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40a7b2d81b1f342ac29c8247b2eceae939756207ba740061a72d40ed547e7d4. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/CZH401107772.
Triple Concerto for Viloin, Cello & Piano in C Major, Op. 56: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c9221a345e6ff6725fa6c378144aff00997e896d43334c66ed07b11e9fad74. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZH401107773.
Triple Concerto for Viloin, Cello & Piano in C Major, Op. 56: III. Rondo alla polacca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d6c0d07767af20118c4c7ec181f6e78690c121b887263158eb9b412add9cb1. 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/CZH401107774.
Piano Concerto No. 3 in C Minor, Op. 37: I. Allegro con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c4c2c512eba54fdf9934af9b715e47fc03f91c2c7d3c4191fe4d292b634a2f. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZH401107775.
Piano Concerto No. 3 in C Minor, Op. 37: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30717a654dcbfe15c6ae7ef9d13edd68acb877f1fd67b3da7811dc28d9d66b0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZH401107776.