ISRC DEF059232021
Verified recording
DEF059232021 is “24 Préludes, Op. 28: No. 21 in B-Flat Major” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x4e125e18d0fd4e98a66e1c998b9217da1dad4207129f783eb7e0fc5e10567761 and independently timestamped
in Bitcoin block 960468 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059232021.
Recording identifiers
- ISRC
- DEF059232021
- Title
- 24 Préludes, Op. 28: No. 21 in B-Flat Major
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x4e125e18d0fd4e98a66e1c998b9217da1dad4207129f783eb7e0fc5e10567761
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T21:25:57+00:00
- Bitcoin block
- 960468
- Canonical record hash
sha256:3d250d209f7405ca6006c3a7fed0d1526d1e52376a97742eaac5ff06665bba55- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF059232021
- Bitcoin block existence check
- https://blockstream.info/api/block/960468
Full record
Track page: 24 Préludes, Op. 28: No. 21 in B-Flat Major · Machine-readable JSON-LD