Diminuendo and Crescendo in Blue

Recording by Duke Ellington.

Recording identifiers

ISRC
DKEFA2400413
CopyrightID (CopyrightChains transaction hash)
0xa31f2312f1a3bdcf8709aeabf60f0256bf05a159eecc00e74188fff6d2eb1e61
Copyright registration time
2026-07-30T05:53:23+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T06:39:12Z
Bitcoin block
960216
Canonical record hash
sha256:acb1e69f1fa3c6d0d031c9f8f358f84b1a1a3fedebb8ae8207a434d07af91364

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.