ISRC USSM11000341
Verified recording
USSM11000341 is “Captain Jack - Live April 1972 At Sigma Sound Studios, WMMR Radio, Philadelphia, PA” by Billy Joel,
registered on the CopyrightChains blockchain with CopyrightID
0xe4623bf65f4f415c095be002198eb92aebf02f9813119bb956829bb666b880da and independently timestamped
in Bitcoin block 956302 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11000341.
Recording identifiers
- ISRC
- USSM11000341
- Title
- Captain Jack - Live April 1972 At Sigma Sound Studios, WMMR Radio, Philadelphia, PA
- Artist
- Billy Joel
- CopyrightID (CopyrightChains transaction hash)
0xe4623bf65f4f415c095be002198eb92aebf02f9813119bb956829bb666b880da
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:30:09+00:00
- Bitcoin block
- 956302
- Canonical record hash
sha256:1a8a4b2013d37c653013bee063256379037d043ecd19dc9d3abe540845c9a1ca- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11000341
- Bitcoin block existence check
- https://blockstream.info/api/block/956302
Full record
Track page: Captain Jack - Live April 1972 At Sigma Sound Studios, WMMR Radio, Philadelphia, PA · Machine-readable JSON-LD