ISRC DEN961002120
Verified recording
DEN961002120 is “Waltz No. 4 in F Major, Op. 34 No. 3” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x1a17e75b89262781a03f307ff4ade45014ed4fedfc67aa6da2e30a8c80d01a42 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/DEN961002120.
Recording identifiers
- ISRC
- DEN961002120
- Title
- Waltz No. 4 in F Major, Op. 34 No. 3
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x1a17e75b89262781a03f307ff4ade45014ed4fedfc67aa6da2e30a8c80d01a42
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:f33c7ae7e9d90bbaa4e1447cccf6647de5a2acee65d5af14aef0d85bf3f3264f- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961002120
- Bitcoin block existence check
- https://blockstream.info/api/block/956304
Full record
Track page: Waltz No. 4 in F Major, Op. 34 No. 3 · Machine-readable JSON-LD