ISRC DEF057502310
Verified recording
DEF057502310 is “Polonaise No. 3 in A Major, Op. 40 No. 1 "Military"” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xeb86b6ef3ef7a2c008943cb709649208e9f082d593a0f78c6209a69c02d4fd1e and independently timestamped
in Bitcoin block 960277 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057502310.
Recording identifiers
- ISRC
- DEF057502310
- Title
- Polonaise No. 3 in A Major, Op. 40 No. 1 "Military"
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xeb86b6ef3ef7a2c008943cb709649208e9f082d593a0f78c6209a69c02d4fd1e
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T16:10:47+00:00
- Bitcoin block
- 960277
- Canonical record hash
sha256:c0dfdb7262217c720366e86eefa5a73c29412c36065078e1c311c2aede83a903- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057502310
- Bitcoin block existence check
- https://blockstream.info/api/block/960277
Full record
Track page: Polonaise No. 3 in A Major, Op. 40 No. 1 "Military" · Machine-readable JSON-LD