Paste your full Identity header or a raw JWT token below. The decoder splits the JWT, parses header and payload, fetches the signing certificate referenced by x5u when reachable, and verifies the signature against the certificate chain. If certificate retrieval is blocked by CORS, you'll be prompted to paste the chain manually.
Manual Certificate Chain Input
It appears that downloading the certificate failed (likely a CORS issue). Please paste the full public certificate chain below and click "Decode with Pasted Certificate Chain".