Rückert-Lieder: Um Mitternacht

Recording by Gustav Mahler.

Recording identifiers

ISRC
GBF075210053
CopyrightID (CopyrightChains transaction hash)
0xb6d6dd79f77aa13597580375b2de94c7290c32ddd8f7ccd562e46f63e6e27731
Copyright registration time
2026-07-07T14:30:08+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:94691cc65a8777164b56c21e418cd753bcd7ae031b6fab910313ac79091de581

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. 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.