Tragic Overture, Op. 81

Recording by Johannes Brahms.

Recording identifiers

ISRC
GBDGQ1223401
CopyrightID (CopyrightChains transaction hash)
0xd2ff38087c0c8351d0b7c14cad1571b46bbb8b2cd94c4394e1dca752f467a89b
Copyright registration time
2026-07-06T07:31:44+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T18:50:38Z
Bitcoin block
957075
Canonical record hash
sha256:70ea4ffcf3d7e486cb9674100f83352f9b10823ab26d38f7ba4d3ddbc449c8af

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.