ISRC DEF056501711
Verified recording
DEF056501711 is “4 Impromptus, D. 935 (Op. 142): No. 2 in A-Flat Major. Allegretto” by Franz Schubert,
registered on the CopyrightChains blockchain with CopyrightID
0xd4d1d6604849481f496f499fb264775e10629284d8b117a9f66c9d30f49a2f7d and independently timestamped
in Bitcoin block 960468 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056501711.
Recording identifiers
- ISRC
- DEF056501711
- Title
- 4 Impromptus, D. 935 (Op. 142): No. 2 in A-Flat Major. Allegretto
- Artist
- Franz Schubert
- CopyrightID (CopyrightChains transaction hash)
0xd4d1d6604849481f496f499fb264775e10629284d8b117a9f66c9d30f49a2f7d
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T21:25:57+00:00
- Bitcoin block
- 960468
- Canonical record hash
sha256:821a5389287bf44df6d86a3a11178210ad4c33d83792c52496f3d3e5422641c7- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056501711
- Bitcoin block existence check
- https://blockstream.info/api/block/960468
Full record
Track page: 4 Impromptus, D. 935 (Op. 142): No. 2 in A-Flat Major. Allegretto · Machine-readable JSON-LD