ISRC USBC16800132
Verified recording
USBC16800132 is “Etude in E "Tristesse," Op. 10 No. 3” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xc9aad0fbdb41c1830bebb8b9b184c81f4d6628e4c8e8f9620fe2dfbd9ac7863e and independently timestamped
in Bitcoin block 960368 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC16800132.
Recording identifiers
- ISRC
- USBC16800132
- Title
- Etude in E "Tristesse," Op. 10 No. 3
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xc9aad0fbdb41c1830bebb8b9b184c81f4d6628e4c8e8f9620fe2dfbd9ac7863e
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T08:26:41+00:00
- Bitcoin block
- 960368
- Canonical record hash
sha256:a22a7d53352427e3af2e7dfa6a0a1786cf742270b70015a535a5d5314644d9d6- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBC16800132
- Bitcoin block existence check
- https://blockstream.info/api/block/960368
Full record
Track page: Etude in E "Tristesse," Op. 10 No. 3 · Machine-readable JSON-LD