Speak Low

Recording by Kurt Weill.

Recording identifiers

ISRC
DEN961304310
CopyrightID (CopyrightChains transaction hash)
0x078c3360fe40944212b8e1a371e36bd610abc342cf913ef261195b9823e32928
Copyright registration time
2026-07-06T01:19:36+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-06T01:26:17Z
Bitcoin block
956857
Canonical record hash
sha256:fa95c6308aa0e27a6a99a59476217873709b1a18a3f6f239e6ced0eacc67b288

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.