String Quartet No. 1, The Kreutzer Sonata: II. Con moto

Recording by Leoš Janáček.

Recording identifiers

ISRC
NOEHX1706020
CopyrightID (CopyrightChains transaction hash)
0xd34f1176bbf36b2276f9ebb39315539ab16d2c5aa36fdc578025b78c6b67cc36
Copyright registration time
2026-07-07T19:13:40+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:87d5169df8f09229de2f850237bef8e57c0994496296e43809b8e31e46e1788e

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.