ISRC USUM72013803
Verified recording
USUM72013803 is “Smile” by Katy Perry,
registered on the CopyrightChains blockchain with CopyrightID
0x81f1882f58ff9cffef3719296d54d2389e9dfbb39cbf481a4c9e8301efa2aec2 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/USUM72013803.
Recording identifiers
- ISRC
- USUM72013803
- Title
- Smile
- Artist
- Katy Perry
- CopyrightID (CopyrightChains transaction hash)
0x81f1882f58ff9cffef3719296d54d2389e9dfbb39cbf481a4c9e8301efa2aec2
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T12:47:07+00:00
- Bitcoin block
- 953513
- Canonical record hash
sha256:83397af2a90e4a35bf4308bc79fb8ffb9951bb6b944e81e6f1fd83f81147b55b- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72013803
- Bitcoin block existence check
- https://blockstream.info/api/block/953513