ISRC US4R31334340
Verified recording
US4R31334340 is “Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto” by Sergei Rachmaninoff,
registered on the CopyrightChains blockchain with CopyrightID
0x66a8fe01fa5c8c5b65cb7f7451a4ee3088fb9f891f169d7d2b1fb7fd529764cc and independently timestamped
in Bitcoin block 960337 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R31334340.
Recording identifiers
- ISRC
- US4R31334340
- Title
- Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto
- Artist
- Sergei Rachmaninoff
- CopyrightID (CopyrightChains transaction hash)
0x66a8fe01fa5c8c5b65cb7f7451a4ee3088fb9f891f169d7d2b1fb7fd529764cc
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T02:51:48+00:00
- Bitcoin block
- 960337
- Canonical record hash
sha256:f0e072a560101a4a0281b1e7bf175967549adf960a61c9885e25f6d3ddd1588c- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R31334340
- Bitcoin block existence check
- https://blockstream.info/api/block/960337
Full record
Track page: Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto · Machine-readable JSON-LD