ISRC QMVCZ1200002
Verified recording
QMVCZ1200002 is “Waltz, Op. 64 No 2 (Arr. for Cello and Piano)” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xc6535b4bb936b1cf09df90dfbbe4ae105e01eb45600f3cb2257e8e107e5579f1 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/QMVCZ1200002.
Recording identifiers
- ISRC
- QMVCZ1200002
- Title
- Waltz, Op. 64 No 2 (Arr. for Cello and Piano)
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xc6535b4bb936b1cf09df90dfbbe4ae105e01eb45600f3cb2257e8e107e5579f1
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:36dce4dc3c7cd58d5daa797c4c5abdbeb32cb76a785fcafd3947ab27eae75033- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVCZ1200002
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Waltz, Op. 64 No 2 (Arr. for Cello and Piano) · Machine-readable JSON-LD