How Long

Recording by John Fahey.

Recording identifiers

ISRC
USFI86400084
CopyrightID (CopyrightChains transaction hash)
0xfe48c2cb0d3a4ec163a5f658fd692f2463f118e1d174364a6f4fdcd3d810f09d
Copyright registration time
2026-06-09T12:33:12+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:4e12524d90a11f05a725f82d741c45a479d807d43e829829318c728680244f3e

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.