Die Zauberflöte, K. 620, Act I: No. 5, Hm! hm! hm! hm!

Recording identifiers

ISRC

GBF076940106

Release date of the album this recording appears on

1970-01-01

CopyrightID (CopyrightChains transaction hash)

0x5c74cce564febd04e802593caec5d9dff67d00afd9413caa4b62150c7389332e

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T18:46:00Z

Bitcoin block

960294

Canonical record hash

sha256:b6c6cc4c425a1e8a7417afc277f08decc9eaefbf23cec4a26df773a966112471

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBF076940106

What this proof establishes

This recording was released in 1970, 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.