Tragic Overture, Op. 81

Recording by Johannes Brahms.

Recording identifiers

ISRC
DEF058903450
CopyrightID (CopyrightChains transaction hash)
0x8728c0281454354d8f7f7ce29d4768eb9387038420b3abf7a28ace1a87976f8b
Copyright registration time
2026-07-07T07:54:22+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:d17a84639bcad6fa745f3b1697a08c416cba6176becc0fd4db9d94a0511c2dee

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.