ISRC USSM10310155
Verified recording
USSM10310155 is “Only Heart” by John Mayer,
registered on the CopyrightChains blockchain with CopyrightID
0xefb80fd73f8659905979c6f808bee7152f2c374fbc855ca76a5596e4f12a469a and independently timestamped
in Bitcoin block 953513 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10310155.
Recording identifiers
- ISRC
- USSM10310155
- Title
- Only Heart
- Artist
- John Mayer
- CopyrightID (CopyrightChains transaction hash)
0xefb80fd73f8659905979c6f808bee7152f2c374fbc855ca76a5596e4f12a469a
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T12:47:07+00:00
- Bitcoin block
- 953513
- Canonical record hash
sha256:cb0358f3e5692ed7520b935a366255d7d70f6b1c80e63fac5dac666b68bccaef- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10310155
- Bitcoin block existence check
- https://blockstream.info/api/block/953513