String Quartet No. 2, Op. 18: II. Andante - Adagio

Recording by Ivan Wyschnegradsky.

Recording identifiers

ISRC
FR50X2411011
CopyrightID (CopyrightChains transaction hash)
0x17dcf4bd16d82d85e2158dd779346826eed327a1e08545bf49982b46214c71f6
Copyright registration time
2026-06-27T07:27:50+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:294facdbfa194a98cb86816b9cc1e755030119fa2e54b262f0e67cf902643a44

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.