Ballad Medley - Norman Granz Jam Session

Recording by Oscar Hammerstein II.

Recording identifiers

ISRC
USGR10401429
CopyrightID (CopyrightChains transaction hash)
0x1e021e561dfa781ee9e8491abe337f66112b5f4ddbb4bba7d7582c2ccfd59fda
Copyright registration time
2026-07-07T10:58:19+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:760016348137a21681dd013a9f61360f33a5d30b116671d3f193d3166f568dc6

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.