ISRC USBC19300508
Verified recording
USBC19300508 is “Mazurka No. 2 in D Major, Op. 33” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x33e7f6a9bc16a1e4e00a681af38d1a6d43ce43d72dc70a4fed770128efdb1398 and independently timestamped
in Bitcoin block 960125 on 2026-07-29.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC19300508.
Recording identifiers
- ISRC
- USBC19300508
- Title
- Mazurka No. 2 in D Major, Op. 33
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x33e7f6a9bc16a1e4e00a681af38d1a6d43ce43d72dc70a4fed770128efdb1398
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-29T15:38:18+00:00
- Bitcoin block
- 960125
- Canonical record hash
sha256:88dbab01a7f8ab393f4b96e4c64b9096d6bd36765d37c6c108a4b2076b7de8ce- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC19300508
- Bitcoin block existence check
- https://blockstream.info/api/block/960125
Full record
Track page: Mazurka No. 2 in D Major, Op. 33 · Machine-readable JSON-LD