6 Quartets, Op. 112: No. 1. Sehnsucht

Recording by Johannes Brahms.

Recording identifiers

ISRC
DEAD70602111
CopyrightID (CopyrightChains transaction hash)
0x3aac7c4deff588e8bab134cd0ea8e504f5893277ed53d60fb1e740addcc93963
Copyright registration time
2026-07-31T22:49:19+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T23:30:38Z
Bitcoin block
960478
Canonical record hash
sha256:4e4b7aeaae2506329c2cad8e4fb781a09bfd83e52f1247eb6720b94ff642a2c5

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.