ISRC USUM71702212
Verified recording
USUM71702212 is “100 Letters” by Halsey,
registered on the CopyrightChains blockchain with CopyrightID
0xe73279114b75299332e93f9b62cf96fd6e579963b8de4903339e0b5c6affd910 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/USUM71702212.
Recording identifiers
- ISRC
- USUM71702212
- Title
- 100 Letters
- Artist
- Halsey
- CopyrightID (CopyrightChains transaction hash)
0xe73279114b75299332e93f9b62cf96fd6e579963b8de4903339e0b5c6affd910
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T12:47:07+00:00
- Bitcoin block
- 953513
- Canonical record hash
sha256:7f00878377643d575927ba686e4115e52c331dcd4e25bb59e1141807eba6b589- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM71702212
- Bitcoin block existence check
- https://blockstream.info/api/block/953513