ISRC USSM11000340
Verified recording
USSM11000340 is “Intro to Captain Jack - Live April 1972 At Sigma Sound Studios, WMMR Radio, Philadelphia, PA” by Billy Joel,
registered on the CopyrightChains blockchain with CopyrightID
0xd65c2f25460b902c2d420013eacaf2e6336f06df9069af71e738e8c2f01bae6c 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/USSM11000340.
Recording identifiers
- ISRC
- USSM11000340
- Title
- Intro to Captain Jack - Live April 1972 At Sigma Sound Studios, WMMR Radio, Philadelphia, PA
- Artist
- Billy Joel
- CopyrightID (CopyrightChains transaction hash)
0xd65c2f25460b902c2d420013eacaf2e6336f06df9069af71e738e8c2f01bae6c
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:30:09+00:00
- Bitcoin block
- 956302
- Canonical record hash
sha256:2e5a6be08b31a7af7b309ca7fd4c24ed44f7d6f4b1cb93ade6a3b5272ec18b21- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11000340
- Bitcoin block existence check
- https://blockstream.info/api/block/956302
Full record
Track page: Intro to Captain Jack - Live April 1972 At Sigma Sound Studios, WMMR Radio, Philadelphia, PA · Machine-readable JSON-LD