ISRC USHM81377710
Verified recording
USHM81377710 is “Catboy” by Mark Lettieri,
registered on the CopyrightChains blockchain with CopyrightID
0x4f318dcdde6a8e85bec76e759e57227fc9b764450b4395f188a0dba5afe20855 and independently timestamped
in Bitcoin block 957055 on 2026-07-07.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81377710.
Recording identifiers
- ISRC
- USHM81377710
- Title
- Catboy
- Artist
- Mark Lettieri
- CopyrightID (CopyrightChains transaction hash)
0x4f318dcdde6a8e85bec76e759e57227fc9b764450b4395f188a0dba5afe20855
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-07T15:12:44+00:00
- Bitcoin block
- 957055
- Canonical record hash
sha256:2f5778b5019c575b563b3ee68330a59e382284903e7a7b472238ca809bfcdb0b- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81377710
- Bitcoin block existence check
- https://blockstream.info/api/block/957055