Lieder eines fahrenden Gesellen: No. 4, Die zwei blauen Augen

Recording by Gustav Mahler.

Recording identifiers

ISRC
DEN960301694
Release date of the album this recording appears on
2004-01-01
CopyrightID (CopyrightChains transaction hash)
0xe4c38640958e12281a68d609c30ecbadbb8b8dca7a335ac89a2314f252aae243
Copyright registration time
2026-07-06T19:56:54+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:2aea1a5365e005dd520da6b9e7ccf37b604b30e4164aeb4c84ecd753b69bb37a

What this proof establishes

This recording was released in 2004, 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.