Sonata for Violin and Piano: II. Largo sostenuto

Recording identifiers

ISRC

ITUM72000045

CopyrightID (CopyrightChains transaction hash)

0xb85ff1bc15bc39045766c0e445a6e4acde7d36e0aec993b8f4d09c7e1ab33e21

Copyright registration time

2026-07-06T03:37:57+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-06T06:56:49Z

Bitcoin block

956889

Canonical record hash

sha256:2e910b128f538921a0141de1cbfe9c610d82f7978ec5e227fb8db25d16e4f00d

• 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.