ISRC QZZ8A2473985
Verified recording
QZZ8A2473985 is “Lacrimosa Requiem - Mozart - Classical Study Music” by Classical Study Music,
registered on the CopyrightChains blockchain with CopyrightID
0x339a4f872be67caf1afe27cf72e02c0d767b902c5ac3968a4f6c553567e14d36 and independently timestamped
in Bitcoin block 960468 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ8A2473985.
Recording identifiers
- ISRC
- QZZ8A2473985
- Title
- Lacrimosa Requiem - Mozart - Classical Study Music
- Artist
- Classical Study Music
- CopyrightID (CopyrightChains transaction hash)
0x339a4f872be67caf1afe27cf72e02c0d767b902c5ac3968a4f6c553567e14d36
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T21:25:57+00:00
- Bitcoin block
- 960468
- Canonical record hash
sha256:a2bd84ac6704103d93f2098f7806703f89a80dcc51f5c8068f4b31104a6863af- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ8A2473985
- Bitcoin block existence check
- https://blockstream.info/api/block/960468
Full record
Track page: Lacrimosa Requiem - Mozart - Classical Study Music · Machine-readable JSON-LD