Khovanshchina / Act 1: "Cto takoe?"

Recording by Modest Mussorgsky.

Recording identifiers

ISRC
NLA509005410
CopyrightID (CopyrightChains transaction hash)
0xe091b0c8f65ea1e74197bdd7217cc2e544d02cfa34ea71b1a15a02b1b345e6f5
Copyright registration time
2026-07-30T16:09:05+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T17:23:26Z
Bitcoin block
960284
Canonical record hash
sha256:5222cd47628fce9c55f47764a242adeb4a68992f38e2789d7f7b1751207e5b3f

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.