ISRC USUM71903954
Verified recording
USUM71903954 is “Two Bad Days Blues” by Sonny Stitt Quartet,
registered on the CopyrightChains blockchain with CopyrightID
0x4d5ee1e8c2c7a157d6813281136c2becd503fd995ddf028e0c932e649ce85b72 and independently timestamped
in Bitcoin block 960121 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71903954.
Recording identifiers
- ISRC
- USUM71903954
- Title
- Two Bad Days Blues
- Artist
- Sonny Stitt Quartet
- CopyrightID (CopyrightChains transaction hash)
0x4d5ee1e8c2c7a157d6813281136c2becd503fd995ddf028e0c932e649ce85b72
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T15:22:21+00:00
- Bitcoin block
- 960121
- Canonical record hash
sha256:79cb440e45066d3c5f6a9d39e22acf3bb4e88d0d47fbd6c1b9640a487a0f73c3- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71903954
- Bitcoin block existence check
- https://blockstream.info/api/block/960121