ISRC USUM71903955
Verified recording
USUM71903955 is “Blue Smile” by Sonny Stitt Quartet,
registered on the CopyrightChains blockchain with CopyrightID
0xc508be1c73f1e5c3a77200a3731f50fa3e0235a84e6e14b0077545aab3c9b93e and independently timestamped
in Bitcoin block 960155 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71903955.
Recording identifiers
- ISRC
- USUM71903955
- Title
- Blue Smile
- Artist
- Sonny Stitt Quartet
- CopyrightID (CopyrightChains transaction hash)
0xc508be1c73f1e5c3a77200a3731f50fa3e0235a84e6e14b0077545aab3c9b93e
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T22:13:32+00:00
- Bitcoin block
- 960155
- Canonical record hash
sha256:21736aa681efcab327797502f8cc33bc8a6864b4bb4d1a2c5af20aecbaa5df5c- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71903955
- Bitcoin block existence check
- https://blockstream.info/api/block/960155