ISRC DEF056502064
Verified recording
DEF056502064 is “Introduction and Variations on a German National Air Op. posth. (KK 925-927) - Pt. 4” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x30299724653b8001869afb0c8988926a5b2a2e9493cf9a0f207ce66afb3aafaf 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/DEF056502064.
Recording identifiers
- ISRC
- DEF056502064
- Title
- Introduction and Variations on a German National Air Op. posth. (KK 925-927) - Pt. 4
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x30299724653b8001869afb0c8988926a5b2a2e9493cf9a0f207ce66afb3aafaf
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:55:08+00:00
- Bitcoin block
- 956304
- Canonical record hash
sha256:c8f202295ecd0a9c7120fd3e147c04d2708f407c75959197d22daa028449e341- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056502064
- Bitcoin block existence check
- https://blockstream.info/api/block/956304
Full record
Track page: Introduction and Variations on a German National Air Op. posth. (KK 925-927) - Pt. 4 · Machine-readable JSON-LD