Violin Sonata: II. Ballada

Recording by Leoš Janáček.

Recording identifiers

ISRC
GBVVQ1026979
CopyrightID (CopyrightChains transaction hash)
0xcc17b88121a471078b550e04c0b8170d54c451779b43f4c1bcdcba54dcbab4bc
Copyright registration time
2026-06-10T04:55:03+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:ac6609fd77261d04798831c6060c7415fdd9104c52b52642607705b2885f559d

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.