Die Dreigroschenoper: Akt II, Die Zuhälterballade ("In einer Zeit, die nun vergangen ist")

Recording identifiers

ISRC

USSM10007720

Release date of the album this recording appears on

1958

CopyrightID (CopyrightChains transaction hash)

0xf85678d656047490ec25d749fd27db56bdb89303028268d4fd01932c8ad3619a

Copyright registration time

2026-06-24T14:48:25+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:55:08Z

Bitcoin block

956304

Canonical record hash

sha256:af282175c56e587f30e2e381849d02393a9db95d8215f1aa4349b770da386cd8

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC USSM10007720

What this proof establishes

This recording was released in 1958, 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.