ISRC QZNJX2328270
Verified recording
QZNJX2328270 is “Catucadão” by Kalef Castro,
registered on the CopyrightChains blockchain with CopyrightID
0xc34b70b5671523d93a10d9fd8df8271a1001f5a7117bdb462f75ab0b737dc940 and independently timestamped
in Bitcoin block 960291 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2328270.
Recording identifiers
- ISRC
- QZNJX2328270
- Title
- Catucadão
- Artist
- Kalef Castro
- CopyrightID (CopyrightChains transaction hash)
0xc34b70b5671523d93a10d9fd8df8271a1001f5a7117bdb462f75ab0b737dc940
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T18:23:33+00:00
- Bitcoin block
- 960291
- Canonical record hash
sha256:21192cf48c3e9fb080c2ec7dbf5be0fc8ff06809257d0d483b126bd49b9d3095- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2328270
- Bitcoin block existence check
- https://blockstream.info/api/block/960291