ISRC PLB381300248
Verified recording
PLB381300248 is “Rzeczka” by Witold Lutosławski,
registered on the CopyrightChains blockchain with CopyrightID
0x5add022bb1979412f3ac22853b504b2d7da8162b1f3f807ccc8bff66c223e3b2 and independently timestamped
in Bitcoin block 960296 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLB381300248.
Recording identifiers
- ISRC
- PLB381300248
- Title
- Rzeczka
- Artist
- Witold Lutosławski
- CopyrightID (CopyrightChains transaction hash)
0x5add022bb1979412f3ac22853b504b2d7da8162b1f3f807ccc8bff66c223e3b2
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T19:11:09+00:00
- Bitcoin block
- 960296
- Canonical record hash
sha256:27a45a237a8cf6d631bac9aecf2e5e71462620a3a7cfee0e1d239696580eca02- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLB381300248
- Bitcoin block existence check
- https://blockstream.info/api/block/960296