ISRC USC4R2218711
Verified recording
USC4R2218711 is “Unthinkable” by Irwin Kostal,
registered on the CopyrightChains blockchain with CopyrightID
0x5a1b023186ce3932bd5c3f68decb96778f411a1ecee964b36659c93785fa84b2 and independently timestamped
in Bitcoin block 960108 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USC4R2218711.
Recording identifiers
- ISRC
- USC4R2218711
- Title
- Unthinkable
- Artist
- Irwin Kostal
- CopyrightID (CopyrightChains transaction hash)
0x5a1b023186ce3932bd5c3f68decb96778f411a1ecee964b36659c93785fa84b2
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T13:09:35+00:00
- Bitcoin block
- 960108
- Canonical record hash
sha256:afa1be1c56a9aa313ed5c33a022288687d30b7b092be469df2717bd9aa15cf88- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USC4R2218711
- Bitcoin block existence check
- https://blockstream.info/api/block/960108