thumb|Séverac by Jean Diffre (1913) Marie-Joseph Alexandre Déodat de Séverac (; 20 July 1872 – 24 March 1921) was a French composer. thumb|Birth home in Saint-Félix-Lauragais. thumb|Tomb of Séverac.
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0aaf1841245b30bf6c7a5910d75b196bc337f2b9fd91ff5785f4db1b949aee9. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/117622a4-1380-47cf-8d28-6cbd35b4deab.json and https://artists.proofprofile.net/proofs/artist/117622a4-1380-47cf-8d28-6cbd35b4deab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sévérac: Complete Piano Works, Vol. 4 – Sévérac as a Mediterranean
Sévérac: Complete Piano Works, Vol. 3 – Mature Works in Catalonia
Sévérac: Complete Piano Works, Vol. 2 – An Up-and-Coming Composer in Paris
Sévérac: Complete Piano Works, Vol. 1 – Youthful Passion
Déodat de Séverac: La vasque aux colombes
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f099949f8640adaf77240de3f3f9cc4e0a5747b26062bdcf897fe5c3702f7df. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/FR0W69930385.
Déodat de Séverac: Melodies for Voice & Piano
En vacances (Book 1): V. Ronde dans le parc
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea8e5c9a39669d326c1065cbcadb94c0844999254cee51bc6d53802ff2be339. 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/FRY831405250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bdfcb6d5bda7d6ab9004e1ecd4615458a837a18bae98c18f28f7844305fe4c. 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/HKI191209003.
Piano Sonata in B-Flat Minor: II. Elegie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4a40b74b89f651613d34943e7e935197246dca748726044f697403e144612d. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/HKI191209011.
Severac: Piano Music, Vol. 1: Cerdana - En Languedoc
Severac, D. De: Cerdana, 5 Etudes Pittoresques / Sous Les Lauriers Roses / Les Naiades Et Le Faune Indiscret / Baigneuses Au Soleil
Déodat de Séverac: Cerdanya & En Vacances
Séverac: Songs (Hyperion French Song Edition)
Panis angelicus – Favourite Motets from Westminster Cathedral
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d7163fdc23a39b1d803ac5ad64d0dc5bd881b569923d465f69a98817af9d90. 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/GBAJY9366901.
Herz und Mund und Tat und Leben, BWV 147: Jesu, Joy of Man's Desiring (Arr. Whittaker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adcbf80e9aee26c1d37d36b69a580577fd6618af8a15bfbdbe77cc2bc9d4762. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBAJY9366902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90028e2b7d22898fd7dc7919ed6536d83c4978009947b9d96c92c635200ff754. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBAJY9366903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e98044f4f2a1f7eb847a50912e81fa3223026856022bc5bdb1ef20a14ec121. 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/GBAJY9366904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad1ca58df87e272d63443bd26acee77e6ba50244ff3309b8fb7b9bfc0abeaad. 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/GBAJY9366905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b92ae5d920b4a22f554fcdbb790ee15d71938e0d28b9e211408072885632a74. 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/GBAJY9366906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82c590db870c1b800268d694f82bf700cb922490a93dd44d8708903f022f3f2. 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/GBAJY9366907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8dafd154369d6e14275a6cd2effd0e2bbb3b393c2bcc2195383d879c2c0e07. 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/GBAJY9366909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa878fa34857d28df634fadd34536c352284eb12e543922c48d9ca55fa17aed3e. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/GBAJY9366911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61868d07bff4acac45615ffb02b94674c03943f6759c3c96cfb269ce218dee3. 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/GBAJY9366912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2ea2f1d8da3198f8b623b614197616215d6d1c96b8b7b8ac44bd6a04561290. 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/GBAJY9366913.
Psalm 23 "The Lord Is My Shepherd", D. 706
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db976a390dc584666ee0fa735b3fe5f2b1d6fe200eed36a7ab8529825094b97. 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/GBAJY9366915.
Symphony No. 2 in B-Flat Major, Op. 52 "Hymn of Praise": I Waited for the Lord (Sung in English)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb146bd9904868acfba331086e3843694a98364c3cf71add6fc2010bc1607fa09. 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/GBAJY9366916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8451d9938f0577888213e694c3ba2de2c19a727149eb1974793e6af3a3e5a3. 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/GBAJY9366917.
Séverac: L'œuvre de piano. Cerdaña, Sous les lauriers-roses, Le chant de la terre
Séverac: Le chant de la terre "Poème géorgique": Épilogue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be5e26cae65f381f8fe3432e8e118a787c0246d34054546eea7a109e4870ce8. 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/FRZ110901793.
De Séverac: Baigneuses au Soleil - Suite Cerdana
Séverac: En vacances, Premier recueil: Invocation à Schumann
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0b75d07c309527b510659b002bc66c3be84446208ba8779c70274eedc9fd0a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FRZ110901768.
Séverac: En vacances, Premier recueil "Au château et dans le parc": V. Ronde dans le parc
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e8f6aa89f499bcc06358a4e01a6d3974520612ac2b64a8da8a230373f2d864. 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/FRZ110901773.
Séverac: En vacances, Premier recueil "Au château et dans le parc": VII. Valse romantique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0e666dee1f1885b4f1368dbf9c03ccdb8af7e95e623aae3236d5492ec28748. 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/FRZ110901775.
Déodat de Séverac: En Languedoc: II. Sur l'étang, le soir
Severac: Holiday Time, 12 pieces, Vol. 1: VI. An Old Music Box
En vacances, Book 1, No. 7: Valse Romantique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a82714f5efbe11903eda04c7f93bb3957441fd2d34e328f349a2ceaa13506f. 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/FR9W12214752.
Hommage à Déodat de Séverac (Mono Version)