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
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad693ff850d5f6b8db1d20fb9abf3ed9a063ac9d1e2480d6fbcc4ee0795888a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/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 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/DEAD61603041.
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 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/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 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/DEAD61603014.
Beethoven: Piano Sonatas, Piano Concerto No. 3, 8 Bagatelles & Choral Fantasy
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 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/DEAD61900033.
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]