ISRC USPR90009703
Verified recording
USPR90009703 is “When Johnny Comes Marching Home” by Mark Schatz,
registered on the CopyrightChains blockchain with CopyrightID
0xa328e9d1be690d0de326911b4636dd386a588e8549f73ba0e8e7ddc940f645d4 and independently timestamped
in Bitcoin block 960506 on 2026-08-01.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USPR90009703.
Recording identifiers
- ISRC
- USPR90009703
- Title
- When Johnny Comes Marching Home
- Artist
- Mark Schatz
- CopyrightID (CopyrightChains transaction hash)
0xa328e9d1be690d0de326911b4636dd386a588e8549f73ba0e8e7ddc940f645d4
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-08-01T03:50:58+00:00
- Bitcoin block
- 960506
- Canonical record hash
sha256:92939e6ead3ff93cd2df37a60cf00501185384212a2c741cb1e9b0b1c4429bc0- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USPR90009703
- Bitcoin block existence check
- https://blockstream.info/api/block/960506
Full record
Track page: When Johnny Comes Marching Home · Machine-readable JSON-LD