ISRC DEF055802013
Verified recording
DEF055802013 is “4 Impromptus, Op. 90, D.899: No. 4 in A flat: Allegretto” by Franz Schubert,
registered on the CopyrightChains blockchain with CopyrightID
0x42fdf0fd0418660409c694815137d1091850fb612f76b93c87b1a218f658b26f 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/DEF055802013.
Recording identifiers
- ISRC
- DEF055802013
- Title
- 4 Impromptus, Op. 90, D.899: No. 4 in A flat: Allegretto
- Artist
- Franz Schubert
- CopyrightID (CopyrightChains transaction hash)
0x42fdf0fd0418660409c694815137d1091850fb612f76b93c87b1a218f658b26f
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T00:26:26+00:00
- Bitcoin block
- 960327
- Canonical record hash
sha256:4bfa6ca45194d82ffc08741f06c14fb87d08ebcf22aa89e323087ebf88f869b3- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF055802013
- Bitcoin block existence check
- https://blockstream.info/api/block/960327
Full record
Track page: 4 Impromptus, Op. 90, D.899: No. 4 in A flat: Allegretto · Machine-readable JSON-LD