ISRC USBC19800521
Verified recording
USBC19800521 is “Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funebre. Lento” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x95e2b9be1bcb8dc593af8064b2f107a49997e92c3e728bad93d0b1bf25952820 and independently timestamped
in Bitcoin block 960220 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC19800521.
Recording identifiers
- ISRC
- USBC19800521
- Title
- Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funebre. Lento
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x95e2b9be1bcb8dc593af8064b2f107a49997e92c3e728bad93d0b1bf25952820
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T07:28:30+00:00
- Bitcoin block
- 960220
- Canonical record hash
sha256:eb2bd37563bbb20ebc76293be27cde6b6c66394cd7d5823b5e0744ff398235f8- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC19800521
- Bitcoin block existence check
- https://blockstream.info/api/block/960220
Full record
Track page: Piano Sonata No. 2 in B-Flat Minor, Op. 35: III. Marche funebre. Lento · Machine-readable JSON-LD