Stage 0 — Base64 Decode checkpoint
Decode this Base64 string and submit the resulting word.
cipher:U09MSURBQkxF
Stage 1 — Base64 Encode checkpoint
Encode this phrase in Base64 and submit exactly as produced.
plain:matrix green
Stage 2 — URL‑Safe Base64 checkpoint
No padding provided. Convert to standard Base64, pad, decode, then submit the plaintext.
urlsafe:loading…
Stage 3 — XOR Token checkpoint
Token is XOR of timezone, fonts, and timestamp (minutes). Enter the token prefixed by xor- in lowercase hex.
tz:…
fonts:…
t:…
preview:…
Stage 4 — Font Detection checkpoint
Submit the name of any detected monospace font from this set: Share Tech Mono, Fira Code, JetBrains Mono, Consolas, Menlo, Monaco, Source Code Pro, Courier New, DejaVu Sans Mono.
detected:see above list; dynamic match required
Stage 5 — IP Inference final
Enter the last octet of your public IP (IPv4). If blocked or offline, type offline.
status:checking…
We fetch your IP once via ipify to verify this step. No IP is stored; validation is local and ephemeral.