ISRC QZZEC2319138
Verified recording
QZZEC2319138 is “natsuka” by sonsofu,
registered on the CopyrightChains blockchain with CopyrightID
0xb21a8d9a0a3f6a32fcb89f1a7734f86313f9d4d8cf54de171a092be9b997a777 and independently timestamped
in Bitcoin block 960410 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZEC2319138.
Recording identifiers
- ISRC
- QZZEC2319138
- Title
- natsuka
- Artist
- sonsofu
- CopyrightID (CopyrightChains transaction hash)
0xb21a8d9a0a3f6a32fcb89f1a7734f86313f9d4d8cf54de171a092be9b997a777
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T13:50:38+00:00
- Bitcoin block
- 960410
- Canonical record hash
sha256:50d0ac239d90d1aeb4bfae811c593ef8e88ed81840916e69a4104d63e736d642- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZEC2319138
- Bitcoin block existence check
- https://blockstream.info/api/block/960410