Maurice Allard (January 2, 1922 – September 14, 1988) was a Canadian politician, as well as a law professor and a lawyer. Born in Sherbrooke, Quebec, he was elected in 1958 as a member of the Progress
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 0x01f587b21be5eb35d4e4bef2177fa9e4dcb81d80e7b025f6f736e37e95ba237f. 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/078d5cc3-be49-45b6-b7bb-05671afc84ec.json and https://artists.proofprofile.net/proofs/artist/078d5cc3-be49-45b6-b7bb-05671afc84ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart: Bassoon Concerto, K. 191; Haydn: Sinfonia concertante; Cimarosa: Concerto for two flutes; Schubert: Symphony No. 3 (Igor Markevitch – The Deutsche Grammophon Legacy: Volume 3)
Bassoon Concerto in B-Flat Major, K. 191: III. Rondo (Tempo di menuetto)
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 0x0d4c5b8c2c4d996c7b516b92ac2a682e589891df8545ed43e255b81ae1c57869. 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/DEF055801333.
Bassoon Concerto in B-Flat Major, K. 191: I. Allegro - Cadenza: Edouard Flament
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9235c570f1a67b589e2373ab28cd55c3fd5ec3950c828a817ce90d9aee272a3f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEF055801331.
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
Bassoon Concerto in B-Flat Major, K. 191: II. Andante ma adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c8e5e724df13e3fd3b5d4cc72f6991d720821a35c295dbbf03f28c7a1e7c59. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/DEF055801332.
Mozart, W.A.: Clarinet & Bassoon Concerto; Weber: Clarinet Concerto
Berthomieu: Jardins de Paris (Gardens of Paris)
Saint-Saens: Musique de chambre avec vents (Saint-Saens: Chamber Music With Winds)
Cavantine pour trombone et piano, Op. 144
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406eabe26f64c880eb73aa4f60f160a049e8d1cad93bdf083ad785be08002f46. 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/FR3KD1100305.
Poulenc-Un bal masqué-Sonate pour flute-Elegie pour cor-Trio pour piano hautbois et basson
Beethoven: Septuor, Op. 20 (Mono Version)
Vivaldi: Bassoon Concerto in B-Flat Major, RV 501 "La notte": V. Sorge l'aurora. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0439f91369e1751ffb6d6cd6b695a92244965a097b647503d47020af03d89d. 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/FRZ201902138.
Mozart: Messe in C Major & Concerto pour basson in B-Flat Major (Mono Version)
Mozart: Concerto pour basson & Concerto pour cor No. 2 (Mono Version)
Les contemporains écrivent pour les instruments à vent (Mono Version)
Beethoven: Septuor pour cordes et vents, Op. 20 (Mono Version)
Henri Druart / Maurice Allard / Aimee Van De Wiele play: Carl Philipp Emanuel Bach: Trio-Sonate (Wq 92 Nr. 1 / Wq 92 Nr. 4)
Vivaldi: Concerto pour basson, RV 484 - Single (Mono Version)
Jolivet: Concerto pour basson, orchestre à cordes, harpe et piano (Mono Version)
Les instruments à vent : le basson au XXe siècle (Mono Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678843fa88b266cddfc252d43752528883bd51d9079fa724b2bc22d06446feca. 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/BEC999734903.
Sonate, Op. 168: III. Molto adagio - Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b74c4e49ee4862000d78fbdba90514f32271284a69ff0216dfff4de00a9629. 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/BEC999734904.
Variations pour basson seul sur un thème de Paganini
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f3508e6d1a5f0e81462de44c8007af995d9f3bfa668873011f047ab4a38b9a. 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/BEC999734907.
Vivaldi: Concerti solenni, RV 212, 286, 556, 579 & 581
Vivaldi: Violin Concerto in D Major, RV 212 "Fatto per la Solennità della S. Lingua di S. Antonio in Padua, 1712": I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1445e352037f69a3896c11255d2c750a63511daf0ae1a8643eb5497c33e873. 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/FRZ207503101.
Vivaldi: Violin Concerto in F Major, RV 286 "Per la Solennità di San Lorenzo": III. Allegro non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f50d3bf0d564d6de042773745888ed0148f2c5e78be9dceb7b9e1b0df96056. 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/FRZ207503303.
Poulenc: Sonate pour flûte et piano & Trio pour piano, hautbois et basson (Mono Version)
Flute Sonata, FP 164: I. Allegro malinconico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b514983d7edbb236c4ad544ac6bd0396befda849d61d091e6eecfde28e64a5. 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/FRS181519280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a20d3912ebfc4747f3853abafb00d00c54d1ea1f3a3a77684c78024532bd2d0. 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/FRS181519281.
Hommage à Félix Passerone (Mono Version)
Couperin: Pièces pour clavecin (Mono Version)
Suite dans le goût espagnol (Mono Version)
Cantiques, vol. 1: Cycle de Noël (Mono version)
Livre d'or des chants populaires allemands (Mono Version)
Hommage à Pablo Casals, vol. 14 (Mono Version)
Arvay: La fête fantastique, La forêt d'ombres & Images symphoniques (Stereo Version)
Arvay: La fête fantastique, La forêt d'ombres & Images symphoniques (Mono Version)
Cantiques, vol. 2: Cycle de Pâques (Mono version)
Handel: Concerto grosso - EP (Formerly Attributed to George Frideric Handel as Op. 3 No. 4, Mono Version)
Mozart: Messe, K. 317 "Couronnement" & Concerto pour basson, K. 191 (Stereo Version)
Cantiques pour le temps présent, vol. 1 (feat. Stanislas Staskiewiez, Christian Lardé, André Chevalet, Maurice Allard) [Stereo Version]