12 Etudes, L.136: 11. Pour les Arpèges composés

Recording identifiers

ISRC

NLA508723511

Release date of the album this recording appears on

2018-01-12

CopyrightID (CopyrightChains transaction hash)

0x97b73a7fff73e06d8ac9fb2fa4d0951b0ebfbcedb5d9c000e9e7d8fff0eb6d4c

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T09:54:03Z

Bitcoin block

960384

Canonical record hash

sha256:410419d4c6f0149efdd6e6bfd66864961c4b94040114afa81be9798858e0061a

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC NLA508723511

What this proof establishes

This recording was released in 2018, 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.