Jean-Rodolphe Kars (born 1947) is an Indian-born French pianist of Austrian Jewish origin, who became a Catholic priest of the Catholic Emmanuel Community.Billboard, 6 November 1971 Biography The
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 0xd41f8e1933bf8b6f9b888d7b765acfa61eb012f45f53c566eb6f06b8d350b15f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d0a3c99-d19c-495d-9386-3ccaeed8c901.json and https://artists.proofprofile.net/proofs/artist/7d0a3c99-d19c-495d-9386-3ccaeed8c901.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Messiaen: Vingt regards sur l'Enfant Jésus
Préludes / Book 1, L. 117: 1. Danseuses de Delphes
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 0xa2da9f7cc7546e5e7e04de0cee3d337a67d35a9c73c95d77cbe879212cc59ea9. 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/GBBBA7171301.
Préludes / Book 1, L. 117: 6. Des pas sur la neige
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4077a5e323638313019092c49f29133d413571ef0b6ebe110c31713aca1625. 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/GBBBA7171306.
Préludes / Book 1, L. 117: 8. La fille aux cheveux de lin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ebb62c3a22e378e14a5383b7693c30695910f30ef451923949baba93db008b. 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/GBBBA7171308.
Préludes / Book 2, L. 123: 1. Brouillards
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5112fb9f4731e7f3d2c58cf79cee094039e83f7550e71d75f42dd11af06dd2. 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/GBBBA7171401.
Préludes / Book 2, L. 123: 3. La puerta del vino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29755bbc550275d4ca3a47d14f506628a300e52b355cc1fa26893876de1bbb69. 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/GBBBA7171403.
Préludes / Book 2, L. 123: 7. La terrasse des audiences du clair de lune
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1959fbda02271f234cbc3922459b3e3d8d9c1f62ef24fcce4a9c8f9322be5a62. 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/GBBBA7171407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e20487b8e89005c9c31863c4959144a59ad90e4a4efb350e9a940c1892ac39. 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/GBBBA7171408.
Préludes / Book 2, L. 123: 12. Feux d'artifice
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8464b3388f1c0f1eaba1fc2b3d127f8cb8768650a53aaf50dfa55e287a8c6a4f. 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/GBBBA7171412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eacfcc854b35f28c052e10c8db838094023a8a7b9c8a05b14a44347750b8f40. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBBBA7171302.
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
Préludes / Book 1, L. 117: 3. Le vent dans la plaine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0467aa357c6b23578de368e61ed05ac2fcbfb9e12d2413de5e85d2a27d900cd1. 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/GBBBA7171303.
Préludes / Book 1, L. 117: 4. Les sons et les parfums tournent dans l'air du soir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e9124944d27380c5ae5dcec0fdddbc785902039b6fc0b33696a4f62ad6dd9d. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/GBBBA7171304.
Préludes / Book 1, L. 117: 5. Les collines d'Anacapri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac350a525f0c1589bded7dcdc8b55def1c4ac1f96860acf776330e1ca101f1bf. 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/GBBBA7171305.
Préludes / Book 1, L. 117: 7. Ce qu'a vu le vent d'ouest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fddf117717cb307437d1c2657555450a7a744954002b06415dffafda341309. 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/GBBBA7171307.
Préludes / Book 1, L. 117: 9. La sérénade interrompue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ade3a029cec0a3105b138d4d5a53571eaf3568c7b1574d995e09dfecadafa6. 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/GBBBA7171309.
Préludes / Book 1, L. 117: 10. La cathédrale engloutie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78a8c61279df0242576c5a6f4c010bce4b18906840b75f5d81399038907ed51. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBBBA7171310.
Préludes / Book 1, L. 117: 11. La danse de Puck
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cc9107a45ce3b7a0719087a5328be4cb76e3c6a6adddd0d7be5758c8da0e6a. 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/GBBBA7171311.
Préludes / Book 1, L. 117: 12. Minstrels
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093db6ec9226675e404a4892f03652a403d60a1920331842b4fbb4117d9a28ea. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/GBBBA7171312.
Préludes / Book 2, L. 123: 2. Feuilles mortes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ab65a8d8af2d160cdc9405998e6014766dc1026c9bd95d89fe8315bb1253d1. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/GBBBA7171402.
Préludes / Book 2, L. 123: 4. "Les fées sont d'exquises danseuses"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c79d56015b2ba16936785581acd90385ef2ddaabfef31a05317c1d00cd6c7bb. 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/GBBBA7171404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fa716062e9e3d0268412a44c70088729f84af75b4febf56c1717f6b9de6a3c. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/GBBBA7171405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf24016fdf58fe5f05a89fa3a268631082ac4fa31cc213c92856ab39b1332a33. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBBBA7171410.
Liszt: Sonata ∙ Années de pèlerinage ∙ Études ∙ Légende No. 2
Liebestraum No. 3 in A flat, S.541 No. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a49b933c968e3d96fd4052dec2e3c5621ce6da9202523c3fa90d50ffbaaf56b. 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/GBF076910180.