September Song

Recording by Kurt Weill.

Recording identifiers

ISRC
CAM460429077
CopyrightID (CopyrightChains transaction hash)
0x890f5bdafa6a2a9c1b7a9d6644455c66061a61082fc347e0da7f2e4294514982
Copyright registration time
2026-07-31T00:44:29+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T02:19:15Z
Bitcoin block
960334
Canonical record hash
sha256:ca7ef9d68679da62bc99cc82ab1b25b705e4c098e98063a46af4a8a87dbf5d6a

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.