ISRC DEF066519710
Verified recording
DEF066519710 is “Gräfin Mariza - Operetta in 3 Acts: Grüß mir mein Wien” by Emmerich Kálmán,
registered on the CopyrightChains blockchain with CopyrightID
0x9c1f325de668dba182bb4c494f4abbad2da1629e6a1c9a8d95e14651ab66ef67 and independently timestamped
in Bitcoin block 957120 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066519710.
Recording identifiers
- ISRC
- DEF066519710
- Title
- Gräfin Mariza - Operetta in 3 Acts: Grüß mir mein Wien
- Artist
- Emmerich Kálmán
- CopyrightID (CopyrightChains transaction hash)
0x9c1f325de668dba182bb4c494f4abbad2da1629e6a1c9a8d95e14651ab66ef67
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:22:41+00:00
- Bitcoin block
- 957120
- Canonical record hash
sha256:00372111345274bba155f27c56795ceb2175044afb0feb971389071e3c835b0d- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066519710
- Bitcoin block existence check
- https://blockstream.info/api/block/957120
Full record
Track page: Gräfin Mariza - Operetta in 3 Acts: Grüß mir mein Wien · Machine-readable JSON-LD