Sonata for Alto Saxophone & Piano: I. Two-Part Invention

Recording identifiers

ISRC

QZ27R2000008

Release date of the album this recording appears on

2020-07-24

CopyrightID (CopyrightChains transaction hash)

0xcf4630fccec81fcbb4eadaf7ecfe91a26a46491599ef6e15d7d174711ad8df99

Copyright registration time

2026-07-30T18:30:28+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T18:46:00Z

Bitcoin block

960294

Canonical record hash

sha256:efb4cf256e9c5e23c63e1ad2ecd730fa76611f24d943ec2950226c512f86e152

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC QZ27R2000008

What this proof establishes

This recording was released in 2020, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.