Rückert-Lieder: Um Mitternacht

Recording by Gustav Mahler.

Recording identifiers

ISRC
CA5KV1310012
CopyrightID (CopyrightChains transaction hash)
0x3b2dfece7c3fb6477e8735b19b1c2a2f6e721771f72e57b9c8035e17afcfff49
Copyright registration time
2026-07-07T14:25:49+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:9711ed05886b409b4537ab24f5c02b716f22524179410d70979be1127c5f5292

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.