ISRC QZFYZ2253481
Verified recording
QZFYZ2253481 is “Laura” by Mark Grundhoefer,
registered on the CopyrightChains blockchain with CopyrightID
0xb69762565b165b9d46a2e86e3715c541e8a5a1eba9935e5b59287aa18a14ad3f and independently timestamped
in Bitcoin block 960368 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYZ2253481.
Recording identifiers
- ISRC
- QZFYZ2253481
- Title
- Laura
- Artist
- Mark Grundhoefer
- CopyrightID (CopyrightChains transaction hash)
0xb69762565b165b9d46a2e86e3715c541e8a5a1eba9935e5b59287aa18a14ad3f
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T08:26:41+00:00
- Bitcoin block
- 960368
- Canonical record hash
sha256:3ad40528a36517a6de553613f26e7bbd37f2741d3630ff8399bb7cf851be0613- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYZ2253481
- Bitcoin block existence check
- https://blockstream.info/api/block/960368