{"copyright_id":"0xd23a444f4abd64bbf173612ef8fd26bcc99412bafd961e4dadc73ffa60d063ed","name":"Ronald Van Spaendonck","registered_at":"2026-06-14T19:03:57Z","symbol":"NIM0547356","token_address":"0x55dd3edec7d1e41ed25b925a883a3708d9b6c87b","type":"artist","uuid":"8bbf1717-177f-4afc-9e4e-0ad139ebbba3"}
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 0xd23a444f4abd64bbf173612ef8fd26bcc99412bafd961e4dadc73ffa60d063ed. Chain 2 (Bitcoin): anchored in block 953721 (2026-06-15T01:12:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8bbf1717-177f-4afc-9e4e-0ad139ebbba3.json and https://artists.proofprofile.net/proofs/artist/8bbf1717-177f-4afc-9e4e-0ad139ebbba3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
XXth Century Belgian Works for clarinet and Piano
Musique française pour clarinette et harpe
Leave Me Alone (Minimalist Music for Clarinets)
Arnold, Bacri, Chevreuille, Horovitz, Martinu, Poot & Sancan: Sonatinas for Clarinet & Piano
Sonatina for Clarinet and Piano: I. Allegro con brio
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 0xc620c3c6d50523ef4061a4e75746025aae2042ea783dad802b16c60357f35561. 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/BER180955801.
Sonatina for Clarinet and Piano: II. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64280e6074ca2a7be9d71ee2f3be3daa7ea47a4a8a36916268c27d9312c27d8. 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/BER180955802.
Sonatina for Clarinet and Piano: III. Furioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3bc72f000db49658decd022289c3dd8e6d3d7142e32546f900800802688583. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BER180955803.
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
Sonatina pour clarinette et piano: I. Moderato - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c53010bca494b1840b810e3387acc4535013bc6c24d17680f4e5e9e3a83294. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/BER180955804.
Poulenc: Sonata for Two Pianos / Clarinet Sonatas
Poulenc: Violin Sonata / Clarinet Sonata / Cello Sonata
Beethoven: String Quartet "Razumovsky" - Mozart: Quintet "Stadler-Quintet"
Ludwig van Beethoven - Chamber Music for Wind Instruments
Clarinet Sonata, FP 184: I. Allegro tristemente: Allegretto - tres calme - tempo allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0b81f335fb1e04f8d862142101b2799b1e3f89e95a510578be2ed7035ee016. 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/USB8U1611904.