12 Etudes, Book 2, L. 136: Etude No. 2, "Pour les tierces" (For thirds)

Recording identifiers

ISRC

HKI190007302

Release date of the album this recording appears on

2001-04-16

CopyrightID (CopyrightChains transaction hash)

0x07f3f41d6f286791e58f66c6219484e67b02ef57d1e180607f34be38ac308f44

Copyright registration time

2026-07-07T19:29:05+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:39:04Z

Bitcoin block

957122

Canonical record hash

sha256:34e6519c4d958c7e02c8ba9421de7b865b8a7a57e995b013cf79649ebe9236b3

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC HKI190007302

What this proof establishes

This recording was released in 2001, 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.