ISRC HKI190834209
Verified recording
HKI190834209 is “Hohe Schule des Violoncello-Spiels (High School of Cello Playing), Op. 73: Etude No. 9 in E-Flat Major” by David Popper,
registered on the CopyrightChains blockchain with CopyrightID
0x4875ad61886f1d8b565a2d661aba163a3b91028c9f040e4831483ecddfe45922 and independently timestamped
in Bitcoin block 960327 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190834209.
Recording identifiers
- ISRC
- HKI190834209
- Title
- Hohe Schule des Violoncello-Spiels (High School of Cello Playing), Op. 73: Etude No. 9 in E-Flat Major
- Artist
- David Popper
- CopyrightID (CopyrightChains transaction hash)
0x4875ad61886f1d8b565a2d661aba163a3b91028c9f040e4831483ecddfe45922
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T00:26:26+00:00
- Bitcoin block
- 960327
- Canonical record hash
sha256:828ac6f2d6c20321bc97f6a550d9ffe8a28a8975ecb3c64da46b2e6ddf85b536- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190834209
- Bitcoin block existence check
- https://blockstream.info/api/block/960327
Full record
Track page: Hohe Schule des Violoncello-Spiels (High School of Cello Playing), Op. 73: Etude No. 9 in E-Flat Major · Machine-readable JSON-LD