ISRC FR50X1523208
Verified recording
FR50X1523208 is “Symphony No. 4” by Witold Lutosławski,
registered on the CopyrightChains blockchain with CopyrightID
0xa833cee77477bfe2898f7f80d2e2aa573ad782a8774a6d70ea98de0c1786219c and independently timestamped
in Bitcoin block 960455 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1523208.
Recording identifiers
- ISRC
- FR50X1523208
- Title
- Symphony No. 4
- Artist
- Witold Lutosławski
- CopyrightID (CopyrightChains transaction hash)
0xa833cee77477bfe2898f7f80d2e2aa573ad782a8774a6d70ea98de0c1786219c
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T19:53:13+00:00
- Bitcoin block
- 960455
- Canonical record hash
sha256:a80f7244f0ba3ce4e4a25046daac7ac353f189c89e8981ec3d619978f43ea69f- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X1523208
- Bitcoin block existence check
- https://blockstream.info/api/block/960455