Bedřich Tylšar (born 9 July 1939 in Vrahovice, Prostějov, Czechoslovakia) is a Czech horn player and music pedagogue. He is the brother of hornist Zdeněk Tylšar, and a long-term member of the Czech Ph
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 0x23bc8e10645d2e309b92cefa6e20fcff2d5b94b8a0a63ee0f0d54ec80cd36f3d. Chain 2 (Bitcoin): anchored in block 953627 (2026-06-14T11:43:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f38f562-1a6d-4ad9-bef9-82f9bd16b52b.json and https://artists.proofprofile.net/proofs/artist/2f38f562-1a6d-4ad9-bef9-82f9bd16b52b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beethoven, Mozart & Danzi: Works for French Horn and Piano
Beethoven, Barsanti, Händel, Mozart: Compositions with Two French Horns
Fiala / Pokorny / Rosetti: Concertos for 2 Horns
Rejcha: 12 Wind Trios - Beethoven: Wind Sextet & Quintet
Fiala, Rössler-Rosetti, Rejcha: Concertos for French Horns and Orchestra
Haydn, Vivaldi, Telemann: Concertos for 2 French Horns and Orchestra
Concerto for Two Horns and Strings in F Major, RV 538: III. Allegro non molto
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 0xfd9fafe216752ef76ebe52b02ab8d26f7dca075390e986ef7bd4f90a5b117035. 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/CZA167203933.
Concerto for 2 Horns in E-Flat Major, TWV 52:Es1: I. Maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbbd9388f7237f8c74ee5924d857fa7007cc27500fdf3a400417c1e388baa6f. 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/CZA167201934.
Concerto for 2 Horns in E-Flat Major, TWV 52:Es1: III. Grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bee76b5bc0ddc1c9e4fd3783e95014d5a4b531f73e68c507da6e716b6e2114b. 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/CZA167203934.
Concerto for 2 Horns in E-Flat Major, Hob. VIId:2: I. Allegro maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86e0b8a761212f52f198f70aa811487132e69e808fa1de91dbe544ac13ffb3e. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/CZA167201932.
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
Concerto for 2 Horns in E-Flat Major, Hob. VIId:2: II. Romanza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab5cd6973bd5c8f4b32fc3b638ed8d08ea64f6e7e1d709515d039afb6bfb8c8. 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/CZA167202932.
Concerto for 2 Horns in E-Flat Major, Hob. VIId:2: III. Rondo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b333d8d057ba68998f10b6cc42a1c16ee166ab20cfa6f2d37c3e98705742b1c. 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/CZA167203932.
Concerto for Two Horns and Strings in F Major, RV 538: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc1bd49d6863489c7f31312ad32e3f5c6bd5478ae42c84771f271e84bca1bee. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CZA167201933.
Concerto for Two Horns and Strings in F Major, RV 538: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3ee448a09e853b0b4cf19555a4018a7dc532110513b6bb3ab88018a15c5243. 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/CZA167202933.
Concerto for 2 Horns in E-Flat Major, TWV 52:Es1: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465763fd1fb550c1bb41deb72b1ab430dafe1ccffb2c1aef0318d4c727e9311f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CZA167202934.
Concerto for 2 Horns in E-Flat Major, TWV 52:Es1: IV. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76954ea9f2208290b16823a2751749b230b850bdaf1d9249e5ce1b927b40fbbd. 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/CZA167204934.
Musique de table, Part III: Concerto for 2 horns in E-Flat Major, TWV 54:Es1: III. Grave
Telemann: Recorder Suite in A minor - Viola Concerto - Tafelmusik: 2 Concerti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7b3cbb51fbd869a4a582a001f9c04778d5ac344b9df24f6ab1d9446a8271e4. 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/HKI199319118.
Musique de table, Part III: Concerto for 2 horns in E-Flat Major, TWV 54:Es1: I. Maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd011cefe6a17b58808b7d036b65807edf9b39aeaae55d9d33290a8c67e26601d. 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/HKI199319116.
Musique de table, Part III: Concerto for 2 horns in E-Flat Major, TWV 54:Es1: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba9bee6a551b320eebd9fbf0c556199b82fdff447627c6553060da835b05b96. 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/HKI199319117.
Musique de table, Part III: Concerto for 2 horns in E-Flat Major, TWV 54:Es1: IV. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b92f3d5936d44c34a9678731797d8caa270863e3a56833d39f3f1471712077. 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/HKI199319119.
Concertpiece for Four Horns and Orchestra in F Major, Op. 86: III. Sehr lebhaft
Weber: Concertino in E Minor - Strauss: Horn Concerto in C Minor - Saint-Saëns: Morceau de concert - Schumann: Concertstück
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6abacc7ff3de5924ecf1dea678647165b2349d8ccd00b053e0085a784c0aec. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CZA168603600.
Concertpiece for Four Horns and Orchestra in F Major, Op. 86: I. Lebhaft
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cb12b983ac612b868495dca86266223e4ad22f41af30c730d68e74dffa2be3. 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/CZA168601600.
Concertpiece for Four Horns and Orchestra in F Major, Op. 86: II. Romanza. Ziemlich langsam, doch nicht schleppend
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2453e72ea5026bd405ca312bc47f5ef710906d0ac55b246b54b18bbdb2aeae. 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/CZA168602600.
Musique de table, Part III: Concerto for 2 horns in E-Flat Major, TWV 54:Es1: Tafelmusik, Part III: Concerto for 2 horns in E-Flat Major, TWV 54:Es1: IV. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464bee3f56b1b7b82f60b8bb8f42ec4fc741b8dc3623f7348edea940f0139347. 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/HKI199242605.