ISRC USUM70740305
Verified recording
USUM70740305 is “Underclass Hero” by Sum 41,
registered on the CopyrightChains blockchain with CopyrightID
0x424b5fdeb88a1a339ac278fcd9a65c410d13ea36b7c7607dd4a95dd138aa7490 and independently timestamped
in Bitcoin block 953513 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM70740305.
Recording identifiers
- ISRC
- USUM70740305
- Title
- Underclass Hero
- Artist
- Sum 41
- CopyrightID (CopyrightChains transaction hash)
0x424b5fdeb88a1a339ac278fcd9a65c410d13ea36b7c7607dd4a95dd138aa7490
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T12:47:07+00:00
- Bitcoin block
- 953513
- Canonical record hash
sha256:24d319a71477a70ede95e24d303c243737e5e0e596a8be6a29e9354e5982b08f- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM70740305
- Bitcoin block existence check
- https://blockstream.info/api/block/953513