Violin Concerto No. 2, Op. 61

Recording by Karol Szymanowski.

Recording identifiers

ISRC
HKI199315402
CopyrightID (CopyrightChains transaction hash)
0x2906cc0b2e0e15cbc7ebcb20e55cb64be5b5e315bf0244363d3f4f9b9c60ecba
Copyright registration time
2026-08-01T00:09:19+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-08-01T00:15:43Z
Bitcoin block
960487
Canonical record hash
sha256:1250fe44df80d45ba6a050a27073dea4e1ab8c060e3ba8cd334f8ef74be5ed8e

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.