ISRC USUM72017462
Verified recording
USUM72017462 is “Smile - Marshall Jefferson Remix” by Katy Perry,
registered on the CopyrightChains blockchain with CopyrightID
0x6cc2fb80ce4f78f900cbdb1ba3e43bbf2bd548d3d87d126fd183c61a72aa41cf and independently timestamped
in Bitcoin block 956302 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72017462.
Recording identifiers
- ISRC
- USUM72017462
- Title
- Smile - Marshall Jefferson Remix
- Artist
- Katy Perry
- CopyrightID (CopyrightChains transaction hash)
0x6cc2fb80ce4f78f900cbdb1ba3e43bbf2bd548d3d87d126fd183c61a72aa41cf
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:30:09+00:00
- Bitcoin block
- 956302
- Canonical record hash
sha256:deefe4e509974874e44eaff6ba84a1d0c2acc74c0c1c16412b3440e42227dd73- Verification API (seven-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72017462
- Bitcoin block existence check
- https://blockstream.info/api/block/956302
Full record
Track page: Smile - Marshall Jefferson Remix · Machine-readable JSON-LD