12 Études, Op. 10: No. 7 in C Major "Toccata"

Recording identifiers

ISRC

DEF057230006

Release date of the album this recording appears on

2009-01-01

CopyrightID (CopyrightChains transaction hash)

0x7d76756e65729385299258ef9ab8b33a323c25f4b57613ccb99c1520b4b22ec5

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T15:42:38Z

Bitcoin block

960273

Canonical record hash

sha256:7831df1ec3ef4f7db035ac64150a1515f303bd51dfd52a30c868ce0c5fb1f386

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEF057230006

What this proof establishes

This recording was released in 2009, 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.