ISRC USUM71705500
Verified recording
USUM71705500 is “Last Thing” by Jack & Jack,
registered on the CopyrightChains blockchain with CopyrightID
0x19ffae5841f1250db9bf77126486dfe22c2352e6385e32a7ef796f363a794fb4 and independently timestamped
in Bitcoin block 953515 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71705500.
Recording identifiers
- ISRC
- USUM71705500
- Title
- Last Thing
- Artist
- Jack & Jack
- CopyrightID (CopyrightChains transaction hash)
0x19ffae5841f1250db9bf77126486dfe22c2352e6385e32a7ef796f363a794fb4
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T12:53:06+00:00
- Bitcoin block
- 953515
- Canonical record hash
sha256:f00a713e4334c44196be4d2d41310a93e13bd7fa6c14a54c739e60ed934b8e72- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71705500
- Bitcoin block existence check
- https://blockstream.info/api/block/953515