Ernste Gesänge: III. Traurigkeit

Recording by Hanns Eisler.

Recording identifiers

ISRC
FRZ141202030
CopyrightID (CopyrightChains transaction hash)
0xd0a04fd4b698607fe205a53938275cba025787740216b4e9d8e4491fdfce2a4e
Copyright registration time
2026-08-01T03:55:20+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-08-01T04:30:37Z
Bitcoin block
960509
Canonical record hash
sha256:2ee990a5be2c8e8b493f5025cfc4491f6a2e8a80251aff0c3b75dd1451ca1baa

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.