ISRC USAT20403226
Verified recording
USAT20403226 is “Them Changes - Live at Fillmore West, San Francisco, CA, 3/7/1971” by King Curtis,
registered on the CopyrightChains blockchain with CopyrightID
0xde446e49812cf235b8ef9594ae17d23d0607a503fecece96bb9333816507d192 and independently timestamped
in Bitcoin block 960481 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USAT20403226.
Recording identifiers
- ISRC
- USAT20403226
- Title
- Them Changes - Live at Fillmore West, San Francisco, CA, 3/7/1971
- Artist
- King Curtis
- CopyrightID (CopyrightChains transaction hash)
0xde446e49812cf235b8ef9594ae17d23d0607a503fecece96bb9333816507d192
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T23:51:35+00:00
- Bitcoin block
- 960481
- Canonical record hash
sha256:394b6031a6b596d7144387e55cd411bdd2d2be43174905b7ab3bbc27a7b6e1f3- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USAT20403226
- Bitcoin block existence check
- https://blockstream.info/api/block/960481
Full record
Track page: Them Changes - Live at Fillmore West, San Francisco, CA, 3/7/1971 · Machine-readable JSON-LD