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