ISRC QZ4JJ1607639
Verified recording
QZ4JJ1607639 is “U Let Me Down” by Sorrow,
registered on the CopyrightChains blockchain with CopyrightID
0x1d1407abdcea568bb3934d76638381083018595167bd84c24c9abaf5705a4d3b and independently timestamped
in Bitcoin block 960429 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ4JJ1607639.
Recording identifiers
- ISRC
- QZ4JJ1607639
- Title
- U Let Me Down
- Artist
- Sorrow
- CopyrightID (CopyrightChains transaction hash)
0x1d1407abdcea568bb3934d76638381083018595167bd84c24c9abaf5705a4d3b
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T16:07:24+00:00
- Bitcoin block
- 960429
- Canonical record hash
sha256:4c40140a2684fbfbf24c09e7866bdc428245978d0cda627f325ed34ff249593a- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ4JJ1607639
- Bitcoin block existence check
- https://blockstream.info/api/block/960429