ISRC QZS7J2225107
Verified recording
QZS7J2225107 is “Letter Under” by Lil Double 0,
registered on the CopyrightChains blockchain with CopyrightID
0x2d809f17e1992e301c719d0ec38adae504143d92bff997631ab01ef6cf83da3f and independently timestamped
in Bitcoin block 953520 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS7J2225107.
Recording identifiers
- ISRC
- QZS7J2225107
- Title
- Letter Under
- Artist
- Lil Double 0
- CopyrightID (CopyrightChains transaction hash)
0x2d809f17e1992e301c719d0ec38adae504143d92bff997631ab01ef6cf83da3f
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T13:32:09+00:00
- Bitcoin block
- 953520
- Canonical record hash
sha256:2354afef5197f98568b4c6b243ad0fd8d3f679ee1e0f5c2c9e0dbb1fbd5ee316- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS7J2225107
- Bitcoin block existence check
- https://blockstream.info/api/block/953520