ISRC DEF057502340
Verified recording
DEF057502340 is “Polonaise No. 6 in A-Flat Major, Op. 53 "Heroic"” by Frédéric Chopin,
registered on the CopyrightChains blockchain with CopyrightID
0x69781b067ca0486e121197ecbaa190bc987c93525e1a3b7ec49d89421ebe3623 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/DEF057502340.
Recording identifiers
- ISRC
- DEF057502340
- Title
- Polonaise No. 6 in A-Flat Major, Op. 53 "Heroic"
- Artist
- Frédéric Chopin
- CopyrightID (CopyrightChains transaction hash)
0x69781b067ca0486e121197ecbaa190bc987c93525e1a3b7ec49d89421ebe3623
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:20:19+00:00
- Bitcoin block
- 957118
- Canonical record hash
sha256:db43a3ad26f2b226dfd212397e74b043faf5d795833ec7a4ce4d2ea5f350d88a- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057502340
- Bitcoin block existence check
- https://blockstream.info/api/block/957118
Full record
Track page: Polonaise No. 6 in A-Flat Major, Op. 53 "Heroic" · Machine-readable JSON-LD