Toccata, Op. 11

Recording identifiers

ISRC

DEF056000060

Release date of the album this recording appears on

2017-04-14

CopyrightID (CopyrightChains transaction hash)

0x9842169eeaea60932b4c4a2cfcee64871e2050501d27e01f3d265ec2c9679d39

Copyright registration time

2026-07-31T07:04:52+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T08:26:41Z

Bitcoin block

960368

Canonical record hash

sha256:597f8b13cc5e88c02ff210ca0b845bd98ecabf3e8b72b583be0946719b7ae0ad

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Download the anchored registration record (its SHA-256 is the canonical record hash above)
• Recording evidence summary for ISRC DEF056000060

What this proof establishes

This recording was released in 2017, 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.