Tragic Overture, Op. 81

Recording by Johannes Brahms.

Recording identifiers

ISRC
DEF058300020
CopyrightID (CopyrightChains transaction hash)
0x60f1effaf0fa88ca0311d1f1d248a08922457a29066c50b4b691afbb97af32be
Copyright registration time
2026-07-29T20:57:43+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-29T23:23:05Z
Bitcoin block
960164
Canonical record hash
sha256:0e86c92e6111309d9aa23613b7d237f28d14c87b1e8835f1ef3d52b38e7108d9

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.