ISRC DEF066509990
Verified recording
DEF066509990 is “Gräfin Mariza - Operetta in 3 Acts: Komm mit nach Varasdin” by Emmerich Kálmán,
registered on the CopyrightChains blockchain with CopyrightID
0xe73bc4044477a3f73574ddc305ccef2010cd90d619e2914651201d9050f5a76f and independently timestamped
in Bitcoin block 956312 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066509990.
Recording identifiers
- ISRC
- DEF066509990
- Title
- Gräfin Mariza - Operetta in 3 Acts: Komm mit nach Varasdin
- Artist
- Emmerich Kálmán
- CopyrightID (CopyrightChains transaction hash)
0xe73bc4044477a3f73574ddc305ccef2010cd90d619e2914651201d9050f5a76f
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T05:09:12+00:00
- Bitcoin block
- 956312
- Canonical record hash
sha256:8ce378c7cda0c92deac09d520211c6fface76064391e3cefcd4ba552410f8f51- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066509990
- Bitcoin block existence check
- https://blockstream.info/api/block/956312
Full record
Track page: Gräfin Mariza - Operetta in 3 Acts: Komm mit nach Varasdin · Machine-readable JSON-LD