When Day Is Done

Recording by Al Cohn.

Recording identifiers

ISRC
NLHR52069021
CopyrightID (CopyrightChains transaction hash)
0xe5f2e1dc13d4b9766dcc3e7f7e7f1383dedde60a7cd9b06641fb1b404e1de7d1
Copyright registration time
2026-07-07T13:32:21+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:0b137b0a6f181e55aac85f9b9ca6997bb6cdeadd479f2d4e90d5cecc87bd5622

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.