ISRC QZFZ42322288
Verified recording
QZFZ42322288 is “Pierwsza pocztówka” by Cira,
registered on the CopyrightChains blockchain with CopyrightID
0x3f7fbcfaed704a4ac4c5c41e7147c9bdbd7e1e9136ee69a92f5caabed8fd806f and independently timestamped
in Bitcoin block 960509 on 2026-08-01.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ42322288.
Recording identifiers
- ISRC
- QZFZ42322288
- Title
- Pierwsza pocztówka
- Artist
- Cira
- CopyrightID (CopyrightChains transaction hash)
0x3f7fbcfaed704a4ac4c5c41e7147c9bdbd7e1e9136ee69a92f5caabed8fd806f
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-08-01T04:30:37+00:00
- Bitcoin block
- 960509
- Canonical record hash
sha256:b90bf8778dc03a1cbd136207215f58c856ae82c13040116f6f60997cf0949bb8- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ42322288
- Bitcoin block existence check
- https://blockstream.info/api/block/960509