ISRC HKI190834301
Verified recording
HKI190834301 is “Hohe Schule des Violoncello-Spiels (High School of Cello Playing), Op. 73: Etude No. 21 in A Minor” by David Popper,
registered on the CopyrightChains blockchain with CopyrightID
0xbb1ac906431370d1eabc6b5d6626fa6879067696f54e61cfdb8a3dccb981e99b and independently timestamped
in Bitcoin block 960334 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190834301.
Recording identifiers
- ISRC
- HKI190834301
- Title
- Hohe Schule des Violoncello-Spiels (High School of Cello Playing), Op. 73: Etude No. 21 in A Minor
- Artist
- David Popper
- CopyrightID (CopyrightChains transaction hash)
0xbb1ac906431370d1eabc6b5d6626fa6879067696f54e61cfdb8a3dccb981e99b
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T02:19:15+00:00
- Bitcoin block
- 960334
- Canonical record hash
sha256:f13125d6e109e208dd990c1ecc3e1c80638022a5c3b357a61cd387719de9daf1- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190834301
- Bitcoin block existence check
- https://blockstream.info/api/block/960334
Full record
Track page: Hohe Schule des Violoncello-Spiels (High School of Cello Playing), Op. 73: Etude No. 21 in A Minor · Machine-readable JSON-LD