Maurice Ohana (12 June 1913 – 13 November 1992) was a French composer. Ohana's output includes choral works, string quartets, suites for ten-string guitar, a Tiento for six-string guitar, and operas.
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 0x37fb0c277e841bacec0d61dcdf6c3a53a2e9aca5950455cd020ed18b7fa109a0. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce46c668-856c-4569-a357-cb5831445dae.json and https://artists.proofprofile.net/proofs/artist/ce46c668-856c-4569-a357-cb5831445dae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Respighi: Gli uccelli, P. 154: II. La colomba
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 0x2db96f809525c7cb5aae24e1fbe7c4dd97fbe76b5e0ad512525828dff40d5d3f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:07:58Z), 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/DEA809411302.
Vivaldi: Flute Concerto in D Major, Op. 10 No. 3, RV 428 "Il gardellino": I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6a8a99054e25f29e40cffb2a838ba88a6df4c7091a17cdd203f20bf7495ca3. 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/GBAYC0501764.
Vivaldi: Flute Concerto in D Major, Op. 10 No. 3, RV 428 "Il gardellino": II. Cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66f9dd7bd396085bb11bd29a422cb61d4a38384e26a227969e63d3a988b24e0. 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/GBAYC0501765.
Vivaldi: Flute Concerto in D Major, Op. 10 No. 3, RV 428 "Il gardellino": III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe3440afe64275e712f002a374cc97478959271c76e3ac99232c745a73b096a. 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/GBAYC0501766.
Saint-Saëns: Le carnaval des animaux: XIII. Le cygne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc732b94df772ddb355fc2b53ff1b50b1c4541a0423f3577d8b874db5cec026ac. 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/GBAYC0302211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0362025fce133d477ed47f12f24d38a43ca95276338a5a9a46a176d663060a. 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/GBAYC9603232.
Rameau: Second livre de pièces de clavecin, Suite en mi: V. Le rappel des oiseaux
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce778e050d40533cded1ecfaeee64629761ee0b62cd56a5124565db1a6a1050c. 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/GBAYC1900673.
Sibelius: Lemminkäinen Suite, Op. 22 "Legends of the Kalevala": No. 2, The Swan of Tuonela
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989fdbe29a5ebbe7210d81ac13396e81be5875f7f1b269137f36b6236d42ffc2. 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/GBAYD1200143.
Stravinsky: Le Chant du rossignol: III. Chant du rossignol
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f17d40774a386d1708680fc1eab8deda661d47ff87c8d917d02eebce41505f. 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/GBAYC9105108.
Sauguet: Tableaux de Paris: III. Quai aux fleurs, marché aux oiseaux
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cd5a931d57461ddb1ec1aa2594faf59ea36907b130f105c5ac1b81a6501ece. 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/FRZ117700630.
Mozart: Oiseaux, si tous les ans, K. 307
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2264948ba965e59c64718b05c0d460111e363bd4367159b27897fbce784b05f. 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/DEA341100704.
Tchaikovsky: Swan Lake, Op. 20, Act II: No. 13d, Dance of the Swans. Dance of the Little Swans
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a4ac2dbd9d94a46ed2477debbaebab13601ec108eba49432482a24d40a942e. 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/GBAYC8701439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87eb52db27b31b281f9efbd28fdcc174c30858dba76105eccdcd15e2bfe605bb. 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/GBAYC8704396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6eb9bd21d7b38d52ff148d8fa50eda53575f72543fca5c64847ed84da9dfb57. 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/FRX749899308.
Han de Vries: The Almost Last Recordings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185fecf691eb5081d10f7a13e15a86c3401f28c5b048b169d06c6ba8974993ee. 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/NL3UC2301862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6346db42eba52aa268c8a49d74fb96f76a5d28067a1c76668168aaa7f2f0f631. 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/FIABA1300038.
Maurice Ohana: Dans les jardins des Hespérides (complete works for ten string guitar)
Maurice Ohana: Dans les jardins des Hespérides
Ohana, M.: Guitar Music - Tiento / Si Le Jour Parait… / Cadran Lunaire
Ohana, M.: Tombeau De Claude Debussy / Chiffres De Clavecin / Silenciaire
Ohana, M.: Miroir De Celestine / 2 Pieces / So Tango / Sacral D'Ilx / Carillons / Sarabande
Ohana, M.: In Dark and Blue / T'Haran-Ngo / Piano Concerto
Ohana: Images de Don Quichotte (Mono Version)
Dutilleux: Sonate pour piano - Ohana: Sonatine monodique & 3 Caprices (Mono Version)
Ohana: Llanto por Ignacio Sanchez Mejías & Sarabande pour clavecin et orchestre (Mono Version)
Ohana : Collected Works [The Erato Recordings]
Ohana, M.: 4 Improvisations / Neumes / Syrtes / Sarc / Noctuaire / Satyres / Kypris
Bartók / Arr. Levering for Flute and Guitar: 6 Romanian Folk Dances, Sz. 56: No. 1, Jocul cu bâtă
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55eb25d785089d01e39c86d75c2b098bb20bce07e765090f86b4a2a4f02ba8a. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBAYC1302375.
Bartók / Arr. Levering for Flute and Guitar: 6 Romanian Folk Dances, Sz. 56: No. 6, Măruntel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc62f78ecd8c93f63a7d0ae5efca7633e96e0f2c3ce79def3ae6381a7c0010a. 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/GBAYC1302380.
Shankar: L' Aube Enchantée - based on the Raga "todi"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e3cf46a3e95ff4a217d19cf11ed0de30850bb99106e334bcc8853786de48a1. 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/GBAYC1302381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e7399b36b36f639d9cd11707c52267d91a8e0f7c5150a22e19f02e20f77975. 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/GBAYC1302384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba09f9ed1e64f45ac67c05aafbbbc1c7b9295c9bb01806bc90ee4340d23196e. 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/GBAYC1302385.
Handel: Recorder Sonata in G Minor, Op. 1 No. 2, HWV 360: III. Adagio (Version for Flute and Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa344b892a50faf23b56a8aba60a88ca81835ab918ffa41fa0602e13291a2e75f. 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/GBAYC1302391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1d968a153c1569ac98e20f8c2cc370d0acafe091e9e1f7586636a84617d822. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAYC1302438.
Piazzolla: Histoire du tango: I. Bordel 1900
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291c0d49523c2ca758b9b4e0ea80289f0150c4e4af43134fd96c3a5ef46bab73. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBAYC1302427.
Piazzolla: Histoire du tango: II. Café 1930
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76805ba88f09710696a8b35d4fd98d5cc0d003468baadc7b2e10e6209dd9da57. 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/GBAYC1302428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07604bea26b1cf70154ebbda49a89be0777a1ca289bfe95b31c60f2875386d7d. 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/FR50X1626104.
Cantigas de Santa Maria: Quen na virgen groriosa (Cantiga No. 256)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9d717bd3f183b0df85123505412b74986488d3a829adc8a1bc1fcc74ffdaa4. 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/FR50X1626113.
Barrios Mangoré, Craeyvanger & Others: Guitar Works
Trois Chansons de Charles d’Orléans, CD 99: III. Yver, vous n’estes qu’un villain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65dbd69ed9ec577b057d72e4b601f6d63ed19ee3868deb62accf66121f67872a. 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/FR6V51001040.
Four Shakespeare songs: I. Come Away, Death
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417e093355db12c34c4b792150a573d5f9c2f3fb4a0dca7f0210ed1c6ace57e7. 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/FR6V51001060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0957371e19e4938989d0ee4420d379d5a6d89bf3dda05a7e531897789cd7233. 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/FR6V51001230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec5fa5ae3950dc5a1ef29c30cf6181d38e1a854467e721dc9ba3cba7a1aa303. 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/FR6V51001240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34ed4709b91e839f095b5920cec3b262bc118da13bc0c6abcdeffdfeee51dfa. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR50X1670203.
Music of Spain, Vol. 7 - A Celebration of Andrés Segovia
Guitar Recital: Aguirre, Rafael - Sor, F. / Ibert, F. / Poulenc, F. / Ohana, M. / Rautavaara, E. / Villa-Lobos, H. / Clerch, J. / Tarrega, F.
Highlights from the Julian Bream Edition The Ultimate Guitar Collection