Ludwig August Lebrun (baptized 2 May 1752 – 16 December 1790) was a German oboist and composer. Life Lebrun was born in Mannheim. The well-known and celebrated oboe virtuoso (a contemporary describe
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 0x32034964d56a58d2c1cc6a33a3b177a29ed0d892caffc5db8cdf22e1b60f9023. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf324e6e-8131-42dc-805d-0388c0df1ae0.json and https://artists.proofprofile.net/proofs/artist/cf324e6e-8131-42dc-805d-0388c0df1ae0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lebrun: Oboe Concerto No. 1 in D Minor: III. Allegro
Oboe Concerto No. 1 in D Minor: III. 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 0xa4e5aa2e3bae7e2955bb50ad532aec96f379221873a0706d8083dbc5b61241d0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:43:26Z), 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/DEF058904323.
Concerto for Oboe and Orchestra no.1 in D Minor: 2. Grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76a6f30285ba454bc910b750a321f645f6e13d57552a267c562476a647ff84e. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEF057902802.
Concerto for Oboe and Orchestra no.1 in d minor: 1. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1529bf0f7fda63211bbb29b4fe5beaf897f1505f3cffd8d9b766072b9abf5961. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/DEF057902801.
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 Oboe and Orchestra no.1 in d minor: 3. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d32e27c1fc612e1d703fcd8b39f1188993b7c0b232ad4f769cd1f0765481adc. 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/DEF057902803.
Lebrun: Oboe Concertos No. 2 in G Minor, No.7 in F Major, No. 3 in F Major & No. 1 in D Minor
Lebrun & Beethoven: Oboe Concertos Vol. 2
Oboe Concerto No. 1 in D Minor: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d3019f7881ce758b27a0b88066365d1006d8b26b453c287ced54f93a4385b6. 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/NLA460610076.
Oboe Concerto No. 4 in B-Flat Major: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b392b06cb86688f383f9495e815e79c8105c2951ebe25bcce04683962a3c56. 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/NLA460610079.
Oboe Concerto No. 4 in B-Flat Major: III. Rondo. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e936bd6b302a3365bea8df80cdfd035c2799f2d61406ce6abed62ac1e835dd4. 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/NLA460610081.
Oboe Concerto No. 2 in G Minor: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5a5b111603a13ae94bd1a4b6487449a09407e7b2567c850c40f4f30ba74523. 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/NLA460610082.
Oboe Concerto No. 1 in D Minor: II. Grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e883e6036bee2ad998371821a5a0ca7a21869aa64f0942c7366e6b007ee04a5. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:04:30Z), 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/NLA460610077.
Oboe Concerto No. 1 in D Minor: III. Rondo. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2e790c62d8e912fb48009c075ff53d9bb79c375da58c8f8de90e48f5b69259. 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/NLA460610078.
Oboe Concerto No. 4 in B-Flat Major: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe303e359703de48b2b0258282b9a96a5defa2f31fd0f27260436a180e8e2b690. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/NLA460610080.
Oboe Concerto No. 2 in G Minor: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb2886e4d83e28aeef60ae37352e3462b0adcf259ad6ba1a235bcce7276c811. 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/NLA460610083.
Lebrun, Haydn: 6 Concertos pour flûte (Première intégrale mondiale)
Lebrun: Oboe Concertos No. 2 in G Minor, No. 7 in F Major, No. 3 in F Major & No. 1 in D Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101f500f4cf2fc6699eb7e3ce1d6bc8df880070c3a5ff9b27577f214c71b71d4. 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/DEN120404103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bba3afb2974f383000b20a38c60173370aaf55d98175d83c41ecd897caac8f. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEN120404104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377af200cb5492af6804d6bae0d8bb1522b0adaed5707a19922200dfc74d4437. 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/DEN120404106.