September Song

Recording by Kurt Weill.

Recording identifiers

ISRC
DEA891200969
CopyrightID (CopyrightChains transaction hash)
0x17f41fc34f5cdf22c2d8695e351068081619b5a9a6969943ea63c391a827d660
Copyright registration time
2026-07-22T08:59:15+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-22T10:01:58Z
Bitcoin block
959118
Canonical record hash
sha256:9d1d77fda942cce7e3d3cf014b51d6a0d701db1d34962cffac5bd62d020751f7

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.