Instrument 03 · base64url / claims / signature

JWT Inspector

COMPACT TOKEN159 chars

Sample token loaded.

header.payload.signature

Decoded header 36 encoded chars

{
  "alg": "HS256",
  "typ": "JWT"
}

Decoded payload 4 claims

{
  "sub": "regaan",
  "role": "researcher",
  "scope": [
    "lab:read"
  ],
  "iat": 1770000000
}

Signature not verified

Decoding shows structure only. Verification requires the correct key and algorithm policy.

signature-not-verified