So Long Eric

Recording by Charles Mingus.

Recording identifiers

ISRC
USBN20700389
CopyrightID (CopyrightChains transaction hash)
0x67547038d22e1b1b395b73b1c7d90aa65c15e33012b830cbfc06e0d677d2d8fc
Copyright registration time
2026-06-20T08:22:07+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:ee7bf4a2d9c4f4eba0429f12381c159239eec5f8ac4c809eac76de01ee0b4a26

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.