Die Fledermaus / Act 2: Mein Herr Marquis

Recording identifiers

ISRC

GBBBA1045340

Release date of the album this recording appears on

2011-01-01

CopyrightID (CopyrightChains transaction hash)

0x028c72a2499f2e522657fcd5e7ecb504e71a2c25abb623dcab816c6c9c4380ee

Copyright registration time

2026-07-31T01:37:09+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T02:19:15Z

Bitcoin block

960334

Canonical record hash

sha256:1a5047ebfd5af1b6640d9745fdaab1f176c5756570d92194ee2c4bdf96c2193a

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBBBA1045340

What this proof establishes

This recording was released in 2011, 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.