ISRC FR50X1523205
Verified recording
FR50X1523205 is “Little Suite: II. Hurra polka (Vivace)” by Witold Lutosławski,
registered on the CopyrightChains blockchain with CopyrightID
0xa622717e7d88374aee93dd57783f97afc75f47134e4eb5539ba2e6eb5f3854f5 and independently timestamped
in Bitcoin block 960397 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1523205.
Recording identifiers
- ISRC
- FR50X1523205
- Title
- Little Suite: II. Hurra polka (Vivace)
- Artist
- Witold Lutosławski
- CopyrightID (CopyrightChains transaction hash)
0xa622717e7d88374aee93dd57783f97afc75f47134e4eb5539ba2e6eb5f3854f5
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T12:24:41+00:00
- Bitcoin block
- 960397
- Canonical record hash
sha256:b31b1854a85b905ce97d3024a57cb6fa65fbbe36248a9e4d66187bdfdb6d694d- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1523205
- Bitcoin block existence check
- https://blockstream.info/api/block/960397
Full record
Track page: Little Suite: II. Hurra polka (Vivace) · Machine-readable JSON-LD