The Leipzig Gewandhaus Orchestra (Gewandhausorchester; also previously known in German as the Gewandhausorchester Leipzig) is a German symphony orchestra based in Leipzig, Germany. The orchestra is n
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 0xed4b9bfc69472b1373f8be989e6b41a8ee07e57db4547d77f18aac6993f94eeb. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03876f55-94b2-445a-98d4-ce8678acf927.json and https://artists.proofprofile.net/proofs/artist/03876f55-94b2-445a-98d4-ce8678acf927.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hanns Eisler: Orchestral Music, Vol. 2 - Kleine Sinfonie / 5 Orchestral Pieces / Scherzo / Rhapsodie / Winterschlacht-Suite / Wilhelm Tell
EISLER, H.: Orchestral Music, Vol. 1 - Suite Nos. 1-4 / Kammersinfonie / Der lange Marsch (Pommer, Rogner)
Beethoven: Symphony No. 3 "Eroica" & Leonore Overture No. 3
Mozart: Horn Concertos Nos. 2 & 3 / Concert Rondo for Horn & Orchestra
A Saga Night in Vienna with Johann Strauss II
Beethoven: Symphony No. 7 in A Major, Op. 92
Schumann: Cello Concerto, Op. 129 - Tchaikovsky: Variations on a Rococo Theme, Op. 55
Mahler: Kindertotenlieder / Lieder eines fahrenden Gesellen / Ruckert-Lieder / Des Knaben Wunderhorn (Excerpts)
Dvořák: Symphony No. 9 & Slavonic Dances
George Gershwin: Rhapsody in Blue / Porgy and Bess / Cuban Overture / An American in Paris (Stockigt, Leipzig Gewandhaus Orchestra, Masur)
Mussorgsky: Pictures at an Exhibition & A Night on the Bare Mountain
Pictures at an Exhibition: III. The Old Castle
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 0x2527d9025e7539ff0f4379d1d71f62f2d77805aa501ae2e2b8040938abd41b80. 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/DES380746004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b24d0dbd13ad6ce925a8cef47f8a9656dc6a3df2d1ad4b0796d25489d81d40. 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/DES380746015.
Mendelssohn Bartholdy: Die Erste Walpurgisnacht / Infelice / Ouverture zum Marchen von der schonen Melusine
Die erste Walpurgisnacht, Op. 60: Ouverture: Der Ubergang zum Fruhling
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb804a0ae60f125e1e2fe83f7396c9045bba6d959659bd7f1f95c830da6557d2e. 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/DES380005709.
Die erste Walpurgisnacht, Op. 60: Konnt ihr so verwegen handeln (Alto, Female Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa56fbd5dc881d96c808666b77480e4f27e81f2d8217f365400618254cbaf58. 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/DES380005711.
Die erste Walpurgisnacht, Op. 60: Wer Opfer heut' zu bringen scheut (Baritone, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e05277abd4f4631c2d33380ee8d3730717b0abe70905fa263252040afee303. 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/DES380005712.
Die erste Walpurgisnacht, Op. 60: So weit gebracht, dass wir bei Nacht (Baritone, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675fbcc22b75c39298d0f6b9143aed04c9de4483bb69d9d183e018d26317ed63. 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/DES380005716.
Die erste Walpurgisnacht, Op. 60: Die Flamme reinigt sich vom Rauch (Baritone, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dbdb1212ea8fe40eaadc76b5398d35d948858b6bd4c260cf1d940dbf60305f. 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/DES380005718.
Die erste Walpurgisnacht, Op. 60: Ouverture: Der schlechte Wetter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65215dc0aaf6e041ce8f3c08d00c544d91a1a5d0b8ac77b94a25065dee6667c5. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DES380005708.
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
Die erste Walpurgisnacht, Op. 60: Es lacht der Mai (Tenor, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1ceb4539e0cdde15b5de81004f1e2f3b4578690f1ce93fafba3907320780bd. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DES380005710.
Die erste Walpurgisnacht, Op. 60: Verteit euch, wack're Manner, hier (Male Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518a607815788272e4423e0707126acebedcf32a1efb26ac444d8dab533bcedf. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/DES380005713.
Die erste Walpurgisnacht, Op. 60: Hilf, ach hilf mir, Kriegsgeselle (Tenor, Male Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5153a8faf0811cd84d1940e83a02522aee1e0c1ffe4d889ac9a81777c068ff61. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380005717.
MENDELSSOHN, F.: String Symphony No. 8 (Original version and version with winds) [Leipzig Gewandhaus Orchestra, Masur]
GERSHWIN, G.: Rhapsody in Blue / Piano Concerto in F Major / RAVEL, M.: Piano Concerto for the Left Hand (Rapp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf644d5cb7f4c810d00079c68b1f1ef92b7c86921abbc77093f704fe10509e0b0. 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/DES380009745.
Smetana: Mein Vaterland (Cycle of Symphonic Poems)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79b94cad32227e197e47c8142edf2f58ba9c3b979ffb39c2086d01e1c495106. 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/DES380822002.
Ma Vlast: IV. From Bohemia's Woods and Fields
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4901900e6be0d25d7f4c8f70be63b416cff193ab9547e52360f04efb573766ca. 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/DES380822004.
Vocal Recital: Hannelore Kuhse - WAGNER/ STRAUSS/ BERG/ REGER
Dessau: Orchestral Music, Vol. 1 (KulturSpiegel - Eterna - Über Grenzen Hinaus)
Bach: Motets, BWV 225-230 (KulturSpiegel - Eterna - Über Grenzen hinaus)
Mendelssohn Bartholdy: Symphony No. 3, "Scottish" / Schumann.: Cello Concerto
Georg Friedrich Händel: Organ Concertos Nos. 1-6 (Kohler, Kastner, Leipzig Gewandhaus Orchestra, Thomas)
Bach: Violin Concertos BWV 1042, 1043, 1052 & Vivaldi: Concerto for 2 Violins
Violin Concerto No. 2 in E Major BWV 1042: 1. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9913d83430782dc0ef7c4cd9b42545eeaaea5d13ef06acb6053650f5ab723bc. 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/DES380019540.
Sarasate, Wieniawski & Paganini: Gypsy Airs
Gypsy Airs for Violin and Orchestra, Op. 20
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890529144d0f91adf4def0522a0b9cb61fb2428836129c64b75d8ac2e2d0faa0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DES380014225.
Beethoven: Symphony No. 8 in F Major, Op. 93
Beethoven: Symphony No. 9 in D Minor, Op. 125 - 2nd Movement