Die Gräfin Mariza, Act I: Ouvertüre

Recording by Emmerich Kálmán.

Recording identifiers

ISRC
ATMA40501464
CopyrightID (CopyrightChains transaction hash)
0x5e8a352a05877913fd1205fdf7f166cc12bbe5e50b80655659f170e33df67b34
Copyright registration time
2026-07-07T16:17:44+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:53:27Z
Bitcoin block
957124
Canonical record hash
sha256:c53019c1782f5470d45c51d14bec4c71c2d3d122f7a15819c25f6c7bdcfe6557

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.