ISRC ATTE41700319
Verified recording
ATTE41700319 is “High School of Violoncello Playing, Op. 73: Etude No. 19 in E-Flat Major, "Lohengrin Study" - Allegro” by David Popper,
registered on the CopyrightChains blockchain with CopyrightID
0xba3e04fe716fe29c8b533ee287ac9c6acf706bdd1cafb79295025ff9a8b660c5 and independently timestamped
in Bitcoin block 960441 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATTE41700319.
Recording identifiers
- ISRC
- ATTE41700319
- Title
- High School of Violoncello Playing, Op. 73: Etude No. 19 in E-Flat Major, "Lohengrin Study" - Allegro
- Artist
- David Popper
- CopyrightID (CopyrightChains transaction hash)
0xba3e04fe716fe29c8b533ee287ac9c6acf706bdd1cafb79295025ff9a8b660c5
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T17:29:52+00:00
- Bitcoin block
- 960441
- Canonical record hash
sha256:b8855d6e3b4ab1e98fe51f3eec8cf3a35fab0f050a39b87461ee81ac864070ab- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATTE41700319
- Bitcoin block existence check
- https://blockstream.info/api/block/960441
Full record
Track page: High School of Violoncello Playing, Op. 73: Etude No. 19 in E-Flat Major, "Lohengrin Study" - Allegro · Machine-readable JSON-LD