ISRC DEF066810690
Verified recording
DEF066810690 is “Gräfin Mariza - Operetta in 3 Acts: Juliska, Rosika, sagen dir "Grüß Gott"” by Emmerich Kálmán,
registered on the CopyrightChains blockchain with CopyrightID
0xcc0af6117efc70f366f627d69f2931611278903a40945d2907a9611baf5e704d and independently timestamped
in Bitcoin block 957118 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066810690.
Recording identifiers
- ISRC
- DEF066810690
- Title
- Gräfin Mariza - Operetta in 3 Acts: Juliska, Rosika, sagen dir "Grüß Gott"
- Artist
- Emmerich Kálmán
- CopyrightID (CopyrightChains transaction hash)
0xcc0af6117efc70f366f627d69f2931611278903a40945d2907a9611baf5e704d
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:76e46b5ce1ba30695e9da22490551aa3860ab38d2aad52c2c180f9a4ed1b8981- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066810690
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Gräfin Mariza - Operetta in 3 Acts: Juliska, Rosika, sagen dir "Grüß Gott" · Machine-readable JSON-LD