Ralph van Raat (born 1978) is a Dutch classical pianist. Biography and career Pianist and musicologist Ralph van Raat appears as a recitalist in Europe, Asia, Australia and the United States. Augme
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 0xfedd2e6c62a0d4a4c9d930e9558545fa64da5348580a2c5d67bfe3083edd31c8. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31382cde-d3ae-417d-9688-eec54747108b.json and https://artists.proofprofile.net/proofs/artist/31382cde-d3ae-417d-9688-eec54747108b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stravinsky: The Rite of Spring (Arr. V. Leyetchkiss for Piano) - Debussy: La mer, L. 109 (Arr. L. Garban for Piano)
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 0xb6c8748c0010f026a7556b48a448561239dc4307f3480234fc1d8ad3c0bf3829. 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/HKI191092906.
Les heures persanes, Op. 65: No. 1. Sieste, avant le depart: Lent
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6732fc469f691c8de88871cf8b1fb5996c7786f8356433bd5003ec7e675cea. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI191074701.
Les heures persanes, Op. 65: No. 2. La caravane (reve, pendant la sieste): Pas vite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa2bec3a1a2b8c5b764b6eac26302b83fd7b52c9c27bb21b7bac2e9f7603059. 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/HKI191074702.
Les heures persanes, Op. 65: No. 3. L'escalade obscure: Adagio (non troppo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc227778b809924011e267fc9873f6d1e7bdb4d3361648156a9a8a986e28e33. 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/HKI191074703.
Les heures persanes, Op. 65: No. 4. Matin frais, dans la haute vallee: Pas trop lent
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4a6bc2dcb701e75905ead1c8c78ad54218b80109b397190d92c6f4ca4213f4. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/HKI191074704.
Les heures persanes, Op. 65: No. 5. En vue de la ville: Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b4cca7eb23e2471856e213c24b3598f192612edee476a8c7ed3787dfc60a90. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKI191074705.
Les heures persanes, Op. 65: No. 6. A travers les rues: Allegro vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92682da57d5379cfbaa2886e52ebff5e866ed935f1ac45becceabd8e093e5212. 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/HKI191074706.
Les heures persanes, Op. 65: No. 10. Roses au soleil de midi: Presque adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cec975b90ef60663af2222f3c6965fe57075807d32c445fb8a5771330114c09. 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/HKI191074710.
Les heures persanes, Op. 65: No. 11. A l'ombre, pres de la fontaine de marbre: Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc598b32428e1ce026330588e57b9cc38ae6df3840ff6814ad1a62cfde6d977a. 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/HKI191074711.
Les heures persanes, Op. 65: No. 13. Les collines, au coucher du soleil: Tres calme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836bdc39f3255145732c3c44c794a6cd8a2220629595bf7eda4287ea8622afd4. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/HKI191074713.