ISRC DEF059404000
Verified recording
DEF059404000 is “Piano Quartet in A minor (1876) Quartet for piano, violin, viola and cello: 1. Nicht zu schnell” by Gustav Mahler,
registered on the CopyrightChains blockchain with CopyrightID
0x0c8dafc248e48ce4496e63e5b29e968e6d23d91e131991e75fa9b0b306db6cbd and independently timestamped
in Bitcoin block 956302 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059404000.
Recording identifiers
- ISRC
- DEF059404000
- Title
- Piano Quartet in A minor (1876) Quartet for piano, violin, viola and cello: 1. Nicht zu schnell
- Artist
- Gustav Mahler
- CopyrightID (CopyrightChains transaction hash)
0x0c8dafc248e48ce4496e63e5b29e968e6d23d91e131991e75fa9b0b306db6cbd
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:30:09+00:00
- Bitcoin block
- 956302
- Canonical record hash
sha256:1b737a0b62350260afaabe3f51b85260b2b1523066c2998f0e1c2446577b04b1- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059404000
- Bitcoin block existence check
- https://blockstream.info/api/block/956302
Full record
Track page: Piano Quartet in A minor (1876) Quartet for piano, violin, viola and cello: 1. Nicht zu schnell · Machine-readable JSON-LD