ISRC DEF066509950
Verified recording
DEF066509950 is “Gräfin Mariza - Operetta in 3 Acts: Braunes Mädel von der Puszta” by Emmerich Kálmán,
registered on the CopyrightChains blockchain with CopyrightID
0x49f047c5c3b8f5211cc77c9d5083fa48f484c1f625d0fc221cbbdf5ce3b07d6a 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/DEF066509950.
Recording identifiers
- ISRC
- DEF066509950
- Title
- Gräfin Mariza - Operetta in 3 Acts: Braunes Mädel von der Puszta
- Artist
- Emmerich Kálmán
- CopyrightID (CopyrightChains transaction hash)
0x49f047c5c3b8f5211cc77c9d5083fa48f484c1f625d0fc221cbbdf5ce3b07d6a
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:bc5da4b3b3e455f23be635e022dd115dbb52da28ef5f6297d5c3aeba14b2f676- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066509950
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Gräfin Mariza - Operetta in 3 Acts: Braunes Mädel von der Puszta · Machine-readable JSON-LD