ISRC USUM72111743
Verified recording
USUM72111743 is “heart cold” by Toosii,
registered on the CopyrightChains blockchain with CopyrightID
0x8591e5d72e84b769dd7b960d65f606b588f11d42ed9f248cf4a5aa20f0e9e229 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/USUM72111743.
Recording identifiers
- ISRC
- USUM72111743
- Title
- heart cold
- Artist
- Toosii
- CopyrightID (CopyrightChains transaction hash)
0x8591e5d72e84b769dd7b960d65f606b588f11d42ed9f248cf4a5aa20f0e9e229
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T12:47:07+00:00
- Bitcoin block
- 953513
- Canonical record hash
sha256:dddad8cc58fecbf13e819f4266c339981989f4a8af91157023c16dcff3c7d121- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72111743
- Bitcoin block existence check
- https://blockstream.info/api/block/953513