Roland Pidoux (29 October 1946 – 21 September 2025) was a French cellist and academic teacher. He was principal cellist of the Orchestre national de France from 1978 to 1987 and professor at the Conse
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 0xee6981926c14a53828e50fcd0707732dc90f9e7796ab794386042aae88a62efa. 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/0a462b3a-35f6-44c2-8c1d-53fce9dfd306.json and https://artists.proofprofile.net/proofs/artist/0a462b3a-35f6-44c2-8c1d-53fce9dfd306.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Saint-Saëns: Romance pour cor et orchestre, Op. 36 (Version for Cello and 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a0e54a1f5747dbbff80e1aec072822ca259190d002fa36eb14e6e922734bab. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRZ209109700.
Fauré: Cello Sonata No. 1 in D Minor, Op. 109: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b8c78e949165a6b34b7a484ec678caaf290487f48d996ad529ca9525a1201a. 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/FRZ208803202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa381215da0949b6cf51455bf2fc16e2aabd4c9feadfc866ca39bac13c2ae0b6f. 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/FRZ208803400.