ISRC QZTAT2172264

Verified recording

QZTAT2172264 is “Caroline” by John Mackk, registered on the CopyrightChains blockchain with CopyrightID 0x831b6d61b106fcafe7a6684e647127ee27b4c40b9efac9109e6ef8ea2705c651 and independently timestamped in Bitcoin block 957025 on 2026-07-07. Verify the canonical record, hash, and Bitcoin attestation at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAT2172264.

Recording identifiers

ISRC
QZTAT2172264
Title
Caroline
Artist
John Mackk
CopyrightID (CopyrightChains transaction hash)
0x831b6d61b106fcafe7a6684e647127ee27b4c40b9efac9109e6ef8ea2705c651

Dual-chain proof evidence

Bitcoin-attested timestamp
2026-07-07T10:59:31+00:00
Bitcoin block
957025
Canonical record hash
sha256:2273b245435021138bbb350d056e55dcbbc690b3b7020cb4df18c907727365cb
Verification API (6-check server-side result)
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAT2172264
Bitcoin block existence check
https://blockstream.info/api/block/957025

Full record

Track page: Caroline · Machine-readable JSON-LD