Guitar Sonata No. 5 "Ars combinatoria": I. Toccata

Recording identifiers

ISRC

ES59G1971416

CopyrightID (CopyrightChains transaction hash)

0xcaf85cadd84c4b9bddf4df5ec3693736249e0047bb47c4b1129345dc66a450d4

Copyright registration time

2026-07-31T20:07:53+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T20:22:46Z

Bitcoin block

960459

Canonical record hash

sha256:bf9a27ef8bc3cf446556063e0b52b33494c2a9283c251ff1f49ad14746c9d203

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. 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.