Rosita Renard (real name Rosa Amelia Renard Artigas, February 8, 1894, in Santiago de Chile – May 24, 1949, in Santiago de Chile) was a Chilean classical pianist. Early life Rosa Amelia Renard Arti
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 0x7c13801e9c5b1e48107c3107b3987fcf5867740c2698cc362d88576342b1ba29. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07dc5ca6-dbd5-4e2d-9ce0-501f4eda3141.json and https://artists.proofprofile.net/proofs/artist/07dc5ca6-dbd5-4e2d-9ce0-501f4eda3141.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Characterstucke. Heritage Piano Music of Bach, Mendelssohn and Sibelius
Charakterstucke, Op. 7: No. 7, Leicht Und Luftig (Light and Airy) - Duo-Art 0200 Br
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 0xac3addfa921ef06101dd6fa3d54f75d425b9eca7d5a76cc507d80aac717f76c9. 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/DEPI82422544.
The Peter Phillips Roll Edition: Novus Promusica Favourites, Vol. 1
Blue Danube Arabesques (Arr. For Piano by Adolf Schulz-Evler) - Duo-Art 6006
Blue Danube Arabesques: Brilliant Piano from the Golden Age
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe026f66144cbd1974c94ea60aefe8eaadffe957f5b93a10b39fe5fb8cc3a86d7. 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/DEPI82305656.
Fantasiestucke. Op. 12: No. 7, Dream Visions - Duo-Art 6031
'Atalia' - Contemporary & Classical Masterworks, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ff3eefc0be3fc91164feeebe946abc4977565cc4da67d166c974d488962722. 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/DEPI82439039.
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