ISRC QZK6N2333931
Verified recording
QZK6N2333931 is “City” by 1stClass,
registered on the CopyrightChains blockchain with CopyrightID
0x13487618172add37a5576dcfc212898785fcb06e694af266b8281d5354920099 and independently timestamped
in Bitcoin block 957120 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6N2333931.
Recording identifiers
- ISRC
- QZK6N2333931
- Title
- City
- Artist
- 1stClass
- CopyrightID (CopyrightChains transaction hash)
0x13487618172add37a5576dcfc212898785fcb06e694af266b8281d5354920099
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:22:41+00:00
- Bitcoin block
- 957120
- Canonical record hash
sha256:5880ca51a78c9442acd9b067165bd8d5545b1947bdafd9b51a07a53ff4ee70cb- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6N2333931
- Bitcoin block existence check
- https://blockstream.info/api/block/957120