ISRC DEF056507111
Verified recording
DEF056507111 is “Waltz No. 7 in C-Sharp Minor, Op. 64 No. 2: Tempo giusto - Pt. 1” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x04caec887e014876ff7dc359a870e239fbd027db52e112542162c65cc043c375 and independently timestamped
in Bitcoin block 960337 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056507111.
Recording identifiers
- ISRC
- DEF056507111
- Title
- Waltz No. 7 in C-Sharp Minor, Op. 64 No. 2: Tempo giusto - Pt. 1
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x04caec887e014876ff7dc359a870e239fbd027db52e112542162c65cc043c375
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T02:51:48+00:00
- Bitcoin block
- 960337
- Canonical record hash
sha256:ca5423b570682716ca9bd23efd88d0770d8178e203d8d5fd2ce13d9e4e797539- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056507111
- Bitcoin block existence check
- https://blockstream.info/api/block/960337
Full record
Track page: Waltz No. 7 in C-Sharp Minor, Op. 64 No. 2: Tempo giusto - Pt. 1 · Machine-readable JSON-LD