Die Fledermaus / Act 2: "Mein Herr Marquis"

Recording identifiers

ISRC

NLA508901832

Release date of the album this recording appears on

2002-01-01

CopyrightID (CopyrightChains transaction hash)

0xf8cfd4e07ce30c93359f8bd17ab114a92dcbba250a195a7083a2cef334f8afc6

Copyright registration time

2026-07-06T18:13:28+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-14T18:13:17Z

Bitcoin block

958041

Canonical record hash

sha256:4eac2f4988a1738e69fb10983572ea82d184e4696e6b9c38e09753f1f1fca4bb

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC NLA508901832

What this proof establishes

This recording was released in 2002, 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.