It Ain’t Necessarily So

Recording by Mary Lou Williams.

Recording identifiers

ISRC
USSF10481602
CopyrightID (CopyrightChains transaction hash)
0x9f9f5f831c35d910a85d567fa6adf5981811a7aacff5023ec120739cb5e6be72
Copyright registration time
2026-06-04T13:35:51+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T15:41:10Z
Bitcoin block
953528
Canonical record hash
sha256:c7630a811d5e1d8506ed0917189cca383f2306a126b217ba4f9cf58ad839c8c5

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.