Die lustige Witwe, Act I: No. 4, O Vaterland – Da geh' ich zu Maxim

Recording identifiers

ISRC

DEF057230404

Release date of the album this recording appears on

1985

CopyrightID (CopyrightChains transaction hash)

0x94ea7955cb0061dac8e54837ba5ea41ada8836c52646e3f52c4a3499092bcc1d

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T16:10:47Z

Bitcoin block

960277

Canonical record hash

sha256:9b05444a4f46a78a5390b1a5e768c380ca2e2f9fb6ea3366bd341ffe5e0bff04

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEF057230404

What this proof establishes

This recording was released in 1985, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.