ISRC DEF057801210
Verified recording
DEF057801210 is “Polonaise No. 3 in A Major, Op. 40 No. 1 "Military"” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0xe910d64c9a09def19b652685e058bf853b65f1d3c6c326291bd95ffdae433e19 and independently timestamped
in Bitcoin block 957118 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057801210.
Recording identifiers
- ISRC
- DEF057801210
- Title
- Polonaise No. 3 in A Major, Op. 40 No. 1 "Military"
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0xe910d64c9a09def19b652685e058bf853b65f1d3c6c326291bd95ffdae433e19
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:55482275bbe0aa8ce788ac178fcaeebe9893ca60f43b140d72fd7bc441b70195- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057801210
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Polonaise No. 3 in A Major, Op. 40 No. 1 "Military" · Machine-readable JSON-LD