Brass Quintet, Op. 65: I. —

Recording by Jan Koetsier.

Recording identifiers

ISRC
DET900914202
CopyrightID (CopyrightChains transaction hash)
0x38a7379f6ce3a6ec3c55342c5ea7de58f15bf4418e4ba3df1ba6038c42a5adca
Copyright registration time
2026-06-23T10:08:01+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:0280950cb1845c57720f1eeefd9c6bef874344737fcaff4f9151797ccabc37c8

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.