Répons: Introduction

Recording by Pierre Boulez.

Recording identifiers

ISRC
DEF059632601
CopyrightID (CopyrightChains transaction hash)
0x3575c1d293a27707285fefe8e754b3d71a77d873ba45a24b7d0ed87fd402216a
Copyright registration time
2026-06-24T13:29:07+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:6f24252304fd107a5d7a318a5bc8aef4bcccbee04a887d393342850e7ead08cc

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.