ISRC USHM21784136
Verified recording
USHM21784136 is “F.U.” by Claas,
registered on the CopyrightChains blockchain with CopyrightID
0x0b8566b8a1120431d2a33be61ef90d0743926d7c234753e0fcaabee42871b5ad and independently timestamped
in Bitcoin block 960459 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21784136.
Recording identifiers
- ISRC
- USHM21784136
- Title
- F.U.
- Artist
- Claas
- CopyrightID (CopyrightChains transaction hash)
0x0b8566b8a1120431d2a33be61ef90d0743926d7c234753e0fcaabee42871b5ad
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T20:22:46+00:00
- Bitcoin block
- 960459
- Canonical record hash
sha256:70387a4a5be711287c6263b739dce7d0f9d1d67000d80b54068ba9c31fe81d1e- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21784136
- Bitcoin block existence check
- https://blockstream.info/api/block/960459