Have You Heard - Mono

Recording by John Mayall.

Recording identifiers

ISRC
GBF076623580
CopyrightID (CopyrightChains transaction hash)
0xbdc5305dbd0abfde110591a6ef0c6491d2c0c3ddbeed0084d8a2b90d25017bab
Copyright registration time
2026-06-09T16:17:46+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:1ef10e8de2ac6fc7d9c8d3b617f3217f8d93b2cf97961af88a8efa86925c4f42

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.