The Merry Widow: Act I, "O Vaterland du mächst bei Tag"

Recording identifiers

ISRC

GBJ2F1010742

Release date of the album this recording appears on

2003

CopyrightID (CopyrightChains transaction hash)

0xbd8e453147925fb5b42a9fbb75af9585bad09c0a3f171988ab67ccbaa9111057

Copyright registration time

2026-07-07T03:04:39+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:b645ab2294ed86f31d8feeb199b9eceef1f7670b14ede6c718dc2d3bbd6f89cd

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBJ2F1010742

What this proof establishes

This recording was released in 2003, 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.