how long does a vanity onion take?

each extra character multiplies the work by 32. one or two characters appear in seconds, three in minutes, four in hours on an average machine. five or more is a job for dedicated hardware.

is a custom prefix proof of identity?

no - quite the opposite. scammers routinely generate lookalike prefixes of well-known services. treat any vanity address claiming to be a famous site as hostile until verified via pgp.

home / tools / vanity onion generator

vanity onion generator

mine your own v3 address that starts with letters you pick. the miner runs entirely in your browser - one worker per cpu core, keys generated, hashed and checked locally. nothing is ever uploaded: there is no server endpoint for this tool at all. fair warning about the math below.

javascript is required - key generation is real cryptographic work, and it happens on your device only.

choose your pattern

only the characters a-z and 2-7 exist in base32 - the digits 0, 1, 8 and 9 do not.

...appearing anywhere in the address (much faster)

odds are brutal: every extra character costs ×32. exact tries needed on average: 2 chars = 1,024 · 3 chars = 32,768 · 4 chars = 1,048,576 · 5 chars = 33,554,432. "appearing anywhere" is roughly 48× easier because the pattern can land in any of ~48 slots. anyone selling instant 6-character prefixes is lying - there is no shortcut.

mine it - all cpu cores, nothing leaves your device

faq

why so slow?: a v3 address is derived from an ed25519 key pair. finding a chosen prefix means generating key pairs until one happens to match - pure luck, ×32 per character. there is no shortcut; anyone selling instant 6-character prefixes is lying.
how does it use my cpu?: the miner spawns one web worker per cpu core, each grinding out keypairs in a tight loop. prefix checking reads 5-bit groups straight off the public key, so the slow checksum hash only runs for actual winners. hit stop whenever - your machine, your rules.
is this how phishing addresses are made?: yes - exactly this technique, pointed at copying famous prefixes. which is why a matching prefix proves nothing: always verify addresses through official channels and check them with the validator.
does mining send anything anywhere?: no - and that is structural, not a promise: there is no server endpoint for this tool. key generation, hashing and comparison all happen on your device; watch the network tab stay silent while it runs.
my fan is loud now: that is your cpu doing tens of thousands of ed25519 operations per second across all cores. hit stop whenever - you can resume later and the attempt count carries over.
how do i actually use the mined keys?: the result gives you ready-made file contents: save them as hs_ed25519_public_key and hs_ed25519_secret_key inside your hidden service directory, point your torrc HiddenServiceDir at it, and reload tor. the address will be exactly the one shown here.
can someone steal my vanity address?: only if they get the secret key. the prefix itself proves nothing and grants nothing - keep the secret key offline and never paste it into a website or chat.