Die Fledermaus, Act II: No. 6, Introduction. Ein Souper heut uns winkt

Recording identifiers

ISRC

DEF057530606

Release date of the album this recording appears on

1976-01-01

CopyrightID (CopyrightChains transaction hash)

0xff0e6c9a725b40762a2240310fc6824f2ed18ba4c388b1e0c7028944d39f9de5

Copyright registration time

2026-06-18T14:03:45+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:30:09Z

Bitcoin block

956302

Canonical record hash

sha256:22166c46c85f79f062092dea7a5cd63c71700114350c3cf3ac308123569a5213

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEF057530606

What this proof establishes

This recording was released in 1976, 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.