ISRC QMBZ91354689
Verified recording
QMBZ91354689 is “Calcutta” by Lawrence Welk,
registered on the CopyrightChains blockchain with CopyrightID
0xa2f0f991c7c7d97e478d07fdd06021f578f8136a7a9752ecc757cb906c25d039 and independently timestamped
in Bitcoin block 956304 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91354689.
Recording identifiers
- ISRC
- QMBZ91354689
- Title
- Calcutta
- Artist
- Lawrence Welk
- CopyrightID (CopyrightChains transaction hash)
0xa2f0f991c7c7d97e478d07fdd06021f578f8136a7a9752ecc757cb906c25d039
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:4491d789f4aed6ac13e813b0ff549108f0e0745c3bdb27713f1acf600d733a48- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91354689
- Bitcoin block existence check
- https://blockstream.info/api/block/956304