docs/book/general/guides/post-censorship/index.md

# Tornado Cash post-censorship

This is a guide to using Tornado Cash after the 8th August crisis, when the OFAC decided to sanction the organisation and the smart contracts. This led to a widespread wave of censorship from middleware service providers, resulting in users being vulnerable and unable to access their assets.

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**LANGUAGE:  [ZH](zh.md)  |  [ES](es.md)  |  [RU](ru.md)  **

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### Community build

_The source code for the community build can be found on [the offical community git](https://git.tornado.ws/tornadocash/classic-ui). For a tutorial on how to audit the changes [see Micah's guide](https://notes.ethereum.org/@GW1ZUbNKR5iRjjKYx6_dJQ/Bk8zsJ9xj)_.  

* Current build version: **023c463**
* Stable build version: **023c463**
* [Changelog](https://git.tornado.ws/tornadocash/classic-ui/commits/branch/master)

**See [instructions on RPC configuration](#RPC) if transacting with sanctioned addresses**

The latest community builds are available at:

* Classic:
    * [tornado.ws](https://tornado.ws) 
    * [ipfs.io/ipns/tornadocash.eth](https://ipfs.io/ipns/tornadocash.eth/)
* Nova:
    * [nova.tornado.ws](https://nova.tornado.ws)
    * [ipfs.io/ipns/nova.tornadocash.eth](https://ipfs.io/ipns/nova.tornadocash.eth/)


#### TOR network

**Browser history must be enabled when using TOR browser for event caching**.

How to use Tornado site via Tor: [guide](../tor.md).



#### IPFS details

To get the IPFS content hash and link from the domain details. Visit the ENS application domain page at either:

* Classic: [tornadocash.eth](https://app.ens.domains/name/tornadocash.eth/details)
* Nova: [nova.tornadocash.eth](https://app.ens.domains/name/nova.tornadocash.eth/details)

The IPFS link for Classic (tornadocash.eth) for example, will look like:

```
ipfs://bafybeib4rg5gx7plrvzasrrqa3tcb3tnzm2goxhteaxsbem6hjpzsgihbu
```

The content hash of this link is `bafybeib4rg5gx7plrvzasrrqa3tcb3tnzm2goxhteaxsbem6hjpzsgihbu`


#### Local IPFS deployment (recommended)

* Brave
    * Navigate to the IPFS link in the browser
    * When prompted, choose “Use a Brave local IPFS node”

* Chrome / Firefox
    * Install IPFS Desktop
    * Install IPFS Companion extension ([Chrome](https://chrome.google.com/webstore/detail/ipfs-companion/nibjojkomfdiaoajekhjakgkdhaomnch?hl=en) / [Firefox](https://addons.mozilla.org/en-US/firefox/addon/ipfs-companion/))
    * Ensure IPFS Desktop is open and has an internet connection
    * Navigate to the IPFS link in the browser

#### IPFS gateway usage

* Take the content hash and prefix it followed by a `.` to one of the following IPFS gateways:
    * `ipfs.dweb.link`
        * https://bafybeib4rg5gx7plrvzasrrqa3tcb3tnzm2goxhteaxsbem6hjpzsgihbu.ipfs.dweb.link
    * `ipfs.cf-ipfs.com`
        * https://bafybeib4rg5gx7plrvzasrrqa3tcb3tnzm2goxhteaxsbem6hjpzsgihbu.ipfs.cf-ipfs.com
    * `ipfs.io`
        * https://ipfs.io/ipfs/bafybeib4rg5gx7plrvzasrrqa3tcb3tnzm2goxhteaxsbem6hjpzsgihbu



#### Decentralized sources

All sources (code) of Tornado Cash are also decentralized after [proposal #30](https://tornado.ws/governance/30) and have ENS domains with IPFS contenthash. 
Full guide available at ENS domain [sources.tornadocash.eth](https://app.ens.domains/sources.tornadocash.eth), actual IPFS hash: `bafybeia2s5em2xypmtdifuyj62xwgveujygs4vzoqhbqd2um45wbdxxb6u`.

Gateway (direct link): https://ipfs.io/ipfs/bafybeia2s5em2xypmtdifuyj62xwgveujygs4vzoqhbqd2um45wbdxxb6u


### RPC

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**LANGUAGE:  [ZH](zh.md)  |  [ES](es.md)  |  [RU](ru.md)  **

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* If you want to deposit you may have to change your wallet RPC, as most providers have censored the smart contracts. **The default provider of Metamask, Infura along with Ankr and Alchemy currently do not prohibit transactions to and from the protocol, governance and the TORN token**. 

* Try searching for an alternative working endpoint on [Chainlist](https://chainlist.org/), which could take multiple attempts (take note of the ChainID for network configuration). An example of how to change your RPC provider for MetaMask is shown below. 

![](../../../.gitbook/assets/zOwfk4k.gif)

* Sometimes visiting the application you could be greeted with the following message, to fix this click "OPEN SETTINGS". 

![](../../../.gitbook/assets/xcNzhNG.png)

* You'll then be displayed a dropdown selection, defaulted to a selection. Click on it and select the "Custom" option. 

![](../../../.gitbook/assets/zrY5GEi.png)

* Here enter a non-censoring RPC provider depending on your network and this will resolve application issues.

![](../../../.gitbook/assets/dE13HsA.png)

* Then you are freely able to withdraw, deposit, stake or participate in decentralized governance like nothing ever happened.

## FAQ 

> Why do I keep recieving the error `Failed to fetch relayers`?

* This error is either related to a poor connection or a result of no available relayers on your network. It usually can be solved by refreshing.

> Why do I keep recieving the error `Failed to fetch proving keys`?

* This error is either related to a poor connection, it usually can be solved by refreshing or changing VPN location for better latency.

> Why do I keep recieving the error `Failed to fetch all deposit events from contract` when trying to withdraw?

* This error is related to a poor connection or using a censored RPC endpoint. To resolve this either: 
    * change VPN location for better latency    
    * try a new browser or method of access
    * configure the application RPC configuration to an alternative

> Why can't I make a deposit from my wallet?

* Most RPCs censor transactions to the protocol and governance since the OFAC sanctions, you need to configure your wallet RPC to a uncensored endpoint. .