6 Morceaux, Op. 11: IV. Valse

Recording by Sergei Rachmaninoff.

Recording identifiers

ISRC
GBELX1706574
CopyrightID (CopyrightChains transaction hash)
0x8bd3205598400c30f169499e1d70e0bfecdd181712235d3b68b3d6fd5ec6ac37
Copyright registration time
2026-08-01T01:33:35+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-08-01T02:22:04Z
Bitcoin block
960497
Canonical record hash
sha256:acb59ece804ed21a63a237180d88a8604a4e224b5cc267c575d89599f34e1be0

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.