Die Gräfin Mariza, Act I: Glück ist ein schöner Traum

Recording by Emmerich Kálmán.

Recording identifiers

ISRC
ATMA40501465
CopyrightID (CopyrightChains transaction hash)
0x3097a6f71a027160f0508a5dd53564fada14e21f57e80cf509d0574a806d865a
Copyright registration time
2026-07-07T11:42:25+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:d7fad0b9e352a14c21dd6bf76e77c7f5cd695ab69edb392136d1ae20a2b131c9

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.