ISRC DEN960800953
Verified recording
DEN960800953 is “Waltz No. 4 in F Major, Op. 34 No. 3” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x376ca8435436833178a16a8d38b9ca152cc34a892f6ebe2cd07507c05d66481a and independently timestamped
in Bitcoin block 960321 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800953.
Recording identifiers
- ISRC
- DEN960800953
- Title
- Waltz No. 4 in F Major, Op. 34 No. 3
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x376ca8435436833178a16a8d38b9ca152cc34a892f6ebe2cd07507c05d66481a
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T22:27:30+00:00
- Bitcoin block
- 960321
- Canonical record hash
sha256:7cf5a366996e4abfb2f8650c055dc983d37c98513feb8a8526f46eeee4a7b83f- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960800953
- Bitcoin block existence check
- https://blockstream.info/api/block/960321
Full record
Track page: Waltz No. 4 in F Major, Op. 34 No. 3 · Machine-readable JSON-LD