Piano Concerto No. 6, Op. 74: II. Larghetto

Recording by Nikolai Kapustin.

Recording identifiers

ISRC
DEB262400509
CopyrightID (CopyrightChains transaction hash)
0xac531d6f011b7124a7a9f8eb0698c2dc8dbe364c3a205a4102009cd7b5c9c41c
Copyright registration time
2026-06-23T09:23:44+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:622c350e368e73aedb15bddcbe0ef3745059197bf0718ab33dd710a47b892eba

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.