ISRC DEF057100430
Verified recording
DEF057100430 is “Mazurka No. 19 in B Minor, Op. 30 No. 2: Allegretto” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x981ba1f1de40b4e6015d9352c7065e21bcc0a814d301ca18bf8810e92e592e93 and independently timestamped
in Bitcoin block 960403 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057100430.
Recording identifiers
- ISRC
- DEF057100430
- Title
- Mazurka No. 19 in B Minor, Op. 30 No. 2: Allegretto
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x981ba1f1de40b4e6015d9352c7065e21bcc0a814d301ca18bf8810e92e592e93
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T13:04:34+00:00
- Bitcoin block
- 960403
- Canonical record hash
sha256:a1ba25adb954f15f4ea3cbf98bfc8fd25bb37e0c299247d996346676589c910a- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057100430
- Bitcoin block existence check
- https://blockstream.info/api/block/960403
Full record
Track page: Mazurka No. 19 in B Minor, Op. 30 No. 2: Allegretto · Machine-readable JSON-LD