ISRC CZA540685303
Verified recording
CZA540685303 is “Ryba Rybě” by Janek Ledecky,
registered on the CopyrightChains blockchain with CopyrightID
0x5edd80e3c4ca22180d98e5c0211a5dc4bb9dd5e2b024f9a91304d03216dee5be and independently timestamped
in Bitcoin block 953520 on 2026-06-13.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA540685303.
Recording identifiers
- ISRC
- CZA540685303
- Title
- Ryba Rybě
- Artist
- Janek Ledecky
- CopyrightID (CopyrightChains transaction hash)
0x5edd80e3c4ca22180d98e5c0211a5dc4bb9dd5e2b024f9a91304d03216dee5be
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-06-13T13:32:09+00:00
- Bitcoin block
- 953520
- Canonical record hash
sha256:651e3a535b7375fe7d7ae615e58ab1b8f3cb4f666371c9358fd9ef5549ff8f43- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA540685303
- Bitcoin block existence check
- https://blockstream.info/api/block/953520