ISRC USUM72215155
Verified recording
USUM72215155 is “Muffin Man - Live In Zagreb, November 21, 1975” by Frank Zappa,
registered on the CopyrightChains blockchain with CopyrightID
0x7b5d8ffa4c0a9244d0533bf5a2c972cdf50e25af9fecedc01fdff3e7b8c845d8 and independently timestamped
in Bitcoin block 960144 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72215155.
Recording identifiers
- ISRC
- USUM72215155
- Title
- Muffin Man - Live In Zagreb, November 21, 1975
- Artist
- Frank Zappa
- CopyrightID (CopyrightChains transaction hash)
0x7b5d8ffa4c0a9244d0533bf5a2c972cdf50e25af9fecedc01fdff3e7b8c845d8
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T21:09:47+00:00
- Bitcoin block
- 960144
- Canonical record hash
sha256:88ac4b55099835fd7a90c0dd620d9fb12e7aa2c92e84a47c47ffe25a96ff4a72- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72215155
- Bitcoin block existence check
- https://blockstream.info/api/block/960144
Full record
Track page: Muffin Man - Live In Zagreb, November 21, 1975 · Machine-readable JSON-LD