12 Notations for Piano: IV. Rythmique

Recording by Pierre Boulez.

Recording identifiers

ISRC
DEF059331204
CopyrightID (CopyrightChains transaction hash)
0x07000557c51d3fa490d320db1fce009b2b9029385244ab2f406c5ffd2cef213f

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-08-01T00:10:46Z
Bitcoin block
960485
Canonical record hash
sha256:19e40c3bfd65486ba574e12d7e025a30202d2d2757b0857aff1e3701fc3d8c84

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.