ISRC DEF054302440
Verified recording
DEF054302440 is “Mazurka No. 49 in A Minor Op. 68 No. 2: Lento” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x282831aa8c8f6951086a81ee7698bc3e48889e76f3adc895190609f397ff35cf and independently timestamped
in Bitcoin block 956302 on 2026-07-02.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF054302440.
Recording identifiers
- ISRC
- DEF054302440
- Title
- Mazurka No. 49 in A Minor Op. 68 No. 2: Lento
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x282831aa8c8f6951086a81ee7698bc3e48889e76f3adc895190609f397ff35cf
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-02T03:30:09+00:00
- Bitcoin block
- 956302
- Canonical record hash
sha256:9b1dc26c0f562c979f963cb5da7b2f505592c5da6737dda39d63d52093c95c13- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF054302440
- Bitcoin block existence check
- https://blockstream.info/api/block/956302
Full record
Track page: Mazurka No. 49 in A Minor Op. 68 No. 2: Lento · Machine-readable JSON-LD