ISRC USUPK0721702
Verified recording
USUPK0721702 is “Keep Smiling” by CRUCIFIX,
registered on the CopyrightChains blockchain with CopyrightID
0x72e12c6e1690b355c437708edd02b7a9e025fa78115fbb239aa81f4f0873cedc 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/USUPK0721702.
Recording identifiers
- ISRC
- USUPK0721702
- Title
- Keep Smiling
- Artist
- CRUCIFIX
- CopyrightID (CopyrightChains transaction hash)
0x72e12c6e1690b355c437708edd02b7a9e025fa78115fbb239aa81f4f0873cedc
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:30:09+00:00
- Bitcoin block
- 956302
- Canonical record hash
sha256:64132d60397cc63e7cc2f8505c48012ac42e496b8edf58623fc7a0ae1e7bcb66- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUPK0721702
- Bitcoin block existence check
- https://blockstream.info/api/block/956302