Only Heart

Recording by John Mayer.

Recording identifiers

ISRC
USSM10310155
CopyrightID (CopyrightChains transaction hash)
0xefb80fd73f8659905979c6f808bee7152f2c374fbc855ca76a5596e4f12a469a
Copyright registration time
2026-06-04T12:58:58+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T12:47:07Z
Bitcoin block
953513
Canonical record hash
sha256:cb0358f3e5692ed7520b935a366255d7d70f6b1c80e63fac5dac666b68bccaef

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.