ISRC DEF066810800
Verified recording
DEF066810800 is “Gräfin Mariza - Operetta in 3 Acts: Komm, Czigany” by Emmerich Kálmán,
registered on the CopyrightChains blockchain with CopyrightID
0x62c9a2cdeba94b164b8fbfc59bb340ec22198374b23827ac1715b16e02e521d8 and independently timestamped
in Bitcoin block 960418 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066810800.
Recording identifiers
- ISRC
- DEF066810800
- Title
- Gräfin Mariza - Operetta in 3 Acts: Komm, Czigany
- Artist
- Emmerich Kálmán
- CopyrightID (CopyrightChains transaction hash)
0x62c9a2cdeba94b164b8fbfc59bb340ec22198374b23827ac1715b16e02e521d8
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T15:20:15+00:00
- Bitcoin block
- 960418
- Canonical record hash
sha256:14f4080479322d403de69b0f0ba03ac20a0d68ab91ffd54dab3c87c79a69ee95- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066810800
- Bitcoin block existence check
- https://blockstream.info/api/block/960418
Full record
Track page: Gräfin Mariza - Operetta in 3 Acts: Komm, Czigany · Machine-readable JSON-LD