Sentimental Waltz, Op. 51 No.6

Recording by Sergei Oskolkov.

Recording identifiers

ISRC
DEBL61016792
CopyrightID (CopyrightChains transaction hash)
0x703f636a82d590f4d7b3950a582a8bb2aeedcd098906e0cb13c72ae800f032a6
Copyright registration time
2026-07-06T10:50:14+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T11:43:09Z
Bitcoin block
957032
Canonical record hash
sha256:3a406c30eb0d3175b55de8e47fc7d96311e4ec04e928fd51cd1b8d048ddab3f2

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.