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A firewall for your crypto

Your key can be stolen.
Your funds can't.

A smart-contract vault for anyone holding crypto on Robinhood Chain. Everyday sends go through instantly; risky ones wait in a timed hold, so a stolen key gives you time to stop the thief.

01 The night of a theft Example

The night of a theft, step by step

It's 3 a.m. Someone has your private key.

Vault activity
  1. 03:12A thief imports your stolen keysigned
  2. 03:120.2 ETH out, under your instant limitsent
  3. 03:134.2 ETH to a never-seen addressheld 24h
  4. 03:14Unlimited token approval to a drainerheld 24h
  5. 03:15Raise the instant limit to 5 ETHwaits 24h
  6. 07:40You wake up and open Noxawake
  7. 07:41Cancel all three, rescue to your safe harborrescued
Vault
4.4 ETH
Thief
0.0 ETH
Safe harbor
0.0 ETH

02How it works

Three steps between a thief and your funds.

On a blockchain, whoever holds your key can move your money, and nothing undoes it. Nox adds a timed hold.

Read the docs
  1. 01Once, at set-up

    Create your vault

    A contract only you own, made from your usual wallet. You name a safe harbor: the backup wallet a rescue goes to.

    Safe harbor namedset
  2. 02On every send

    Risky sends wait

    Small sends and saved addresses go through at once. Big sends, approvals and contract calls wait out your hold, 24 hours by default.

    4 ETH to a new addressheld
  3. 03During a hold

    You stop the thief

    Cancel the send, freeze the vault, or move everything to your safe harbor. Nobody can release a hold early.

    Everything to safe harborrescued

03Instant or held

Every send is checked first.

Pick a transaction to see how the Balanced preset treats it. You set your own limits.

Every rule
Rules engineBalanced preset

Transactions

Transaction

Send 4 ETH to a new address

  1. Saved address, or under your instant limitRecipient is not on your saved addresses and the amount is above your instant limit.fails
  2. Within your 24-hour limitThis would go over your 24-hour outflow limit for this token.fails
  3. Not a call to another contractA plain send to a wallet.passes
  4. Vault isn't frozenYour vault is open for sends.passes

Held for 24 hours

If it wasn't youCancel it, or rescue everything to your safe harbor.
If nobody actsIt runs once the 24-hour hold has passed.

04Safety net

Two addresses look after your funds.

Your safe harbor is where a rescue lands. A Guardian can step in for you, and can never take anything.

Who can do what

Required

Your safe harbor

A backup wallet you name at set-up. Keep it on a different device, with its own seed phrase.

  • The only place a rescue can send to
  • Changing it waits 7 days
  • A Guardian can cancel that change

Optional

Your Guardian

A second address you trust, like a wallet you keep elsewhere. It only gets the powers that protect you.

  • Cancel a held send
  • Freeze the vault
  • Rescue to your safe harbor
  • Send funds anywhere else
  • Change your rules
  • Release a hold early

05Get started

Make a thief wait.

Protect your funds in minutes, or see how it works first.