ISRC USC4R2003707
Verified recording
USC4R2003707 is “Who Cares?” by Bill Evans,
registered on the CopyrightChains blockchain with CopyrightID
0x040091575d5f8214ff6d7685b255a1c35f22db1099fa07487676a2dd367e1b99 and independently timestamped
in Bitcoin block 960273 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USC4R2003707.
Recording identifiers
- ISRC
- USC4R2003707
- Title
- Who Cares?
- Artist
- Bill Evans
- CopyrightID (CopyrightChains transaction hash)
0x040091575d5f8214ff6d7685b255a1c35f22db1099fa07487676a2dd367e1b99
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T15:42:38+00:00
- Bitcoin block
- 960273
- Canonical record hash
sha256:f49725b0023144049548eaba4775f2a9569df52ce98f63d3469a28b9ab498ffe- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USC4R2003707
- Bitcoin block existence check
- https://blockstream.info/api/block/960273