ISRC QZQAY2236823
Verified recording
QZQAY2236823 is “O Mar” by Dorival Caymmi,
registered on the CopyrightChains blockchain with CopyrightID
0xfe918619652c8c83e1503267b2860acd68c819633e301e5c4af754a5187c45d4 and independently timestamped
in Bitcoin block 957118 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQAY2236823.
Recording identifiers
- ISRC
- QZQAY2236823
- Title
- O Mar
- Artist
- Dorival Caymmi
- CopyrightID (CopyrightChains transaction hash)
0xfe918619652c8c83e1503267b2860acd68c819633e301e5c4af754a5187c45d4
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:680919b3fb60fb7f068520cb50032f893f13d2f2f74f71cf66575947026f31a6- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQAY2236823
- Bitcoin block existence check
- https://blockstream.info/api/block/957118