The Rach. 3 (Part One)

Recording by Sergei Rachmaninoff.

Recording identifiers

ISRC
NLA509615219
CopyrightID (CopyrightChains transaction hash)
0xcf7550c70cc3a3266a535fc63efa1249b2125fdbc81c741f731f6887b41904a1
Copyright registration time
2026-06-11T12:31:21+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:b6f6f9369f98231a37812ea7b5c9106d95e4babc5b3ddbffacdb530bf6e18068

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.