Combining the Gnosis Safe with Snapshot, SafeSnap enables decentralized execution of crypto governance proposals, through on-chain execution of off-chain votes.
How does it work?
SafeSnap plugin is an oracle-based solution which works together with Gnosis Safe and Snapshot in the following way:
A Gnosis Safe module, where anyone can create a new proposal: an array of multisend transaction payloads.
Each proposal is a Reality.eth question asking if (1) the linked Snapshot proposal passed, (2) did the proposal include the payload, and (3) does the payload do what the proposal describes.
If the proposal passes on Snapshot, then Reality.eth should resolve to the same outcome, and after a 24 hour cooldown period, the proposal’s transactions are executable by anyone.
Reality uses an ERC-20 token (a given DAO’s governance token) for the bond. The minimum bond can be set by way of a proposal to the DAO.
The UI is a Snapshot plugin, in which users can enter an array of tx-payloads to be executed sequentially by the Gnosis Safe if the proposal passes. Once the proposal has passed, the Reality.eth question has resolved, and the 24 hour cooldown period is over, there is the option on the Snapshot interface to trigger each of the multisend transactions in the proposal.
Setup
Follow the official Zodiac guide on how to setup a SafeSnap for your project.
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Security recommendations
In order to ensure maximal safety we recommend to define several paremeters for your setup:
# Setup Guide: Zodiac Reality ModuleThis is a technical guide that uses command line tools, you can also set up the Reality module using the [Zodiac Safe App](https://gnosis.github.io/zodiac/docs/tutorial-module-reality/get-started).
This guide shows how to setup the Reality module with a Gnosis Safe on the Goerli testnetwork. It will use [Reality.eth](https://reality.eth.link/) and can be used with [Snapshot](https://snapshot.org/).
The Reality Module belongs to the [Zodiac](https://github.com/gnosis/zodiac) collection of tools. If you have any questions about Zodiac, join the [Gnosis Guild Discord](https://discord.gg/wwmBWTgyEq). Follow [@GnosisGuild](https://twitter.com/gnosisguild) on Twitter for updates. For more information on the Reality Module (formerly SafeSnap) please refer to the original [Gnosis blog post](https://blog.gnosis.pm/ea67eb95c34f).
## PrerequisitesTo start the process, you need to create a Gnosis Safe on the Goerli testnetwork, for exampe on [https://gnosis-safe.io/app/gor](https://gnosis-safe.io/app/gor)). This Safe will represent the DAO and hold its assets, such as tokens and collectibles. A Safe transaction is required to set up the Reality Module.
For the hardhat tasks to work, the environment needs to be properly configured. See the [sample env file](../.env.sample) for more information.
The guide will use the Goerli ETH Reality.eth V3 contract at [`0x6F80C5cBCF9FbC2dA2F0675E56A5900BB70Df72f`](https://goerli.etherscan.io/address/0x6F80C5cBCF9FbC2dA2F0675E56A5900BB70Df72f#code). Other network addresses can be found in the [Reality.eth GitHub repo](https://github.com/RealityETH/monorepo/tree/main/packages/contracts/chains/deployments).
DISCLAIMER: Check the deployed Reality.eth contracts before using them.## Setup the Reality.eth templateAs part of the setup, you need to define or choose a template on Reality.eth. More information on how to format templates can be found in [their docs](https://reality.eth.link/app/docs/html/whitepaper.html#structuring-and-fetching-information).
To define your own template, a hardhat task is provided in the repository. It is possible to provide a template to that task via `--template`. Otherwise, the [default template](../src/tasks/defaultTemplate.json) is used.
The template should have roughly the following format:```json{"title":"Did the proposal with the id %s pass the execution of the transactions with hash 0x%s?","lang":"en","type":"bool","category":"DAO Proposal"}```- It is important that the `type` is `bool` as the module expects the outcome reported by Reality.eth to be `true`, `false` or `INVALID`.
- The `category` and `lang` can be freely choosen and are only used in the Reality.eth web interfaces.- The title will also be displayed in the Reality.eth web interface and MUST include two `%s` placeholders. - The first placeholder is for the `id` of the proposal (e.g. an IPFS hash). - The second placeholder is the hash of the concatenation of the EIP-712 transaction hashes. See the [README](../README.md) for more information.
- IMPORTANT: The template should be clearly define how to uniquely identify the given proposal and where to find it, so that the oracle can resolve accordingly.
- An example can be found in [ð¯DAO requirements](https://cloudflare-ipfs.com/ipfs/QmeJwtwdG4mPzC8sESrW7zqixZqdHDYnREz6ar9GCewgz7/).
DISCLAIMER: DO NOT BLINDLY COPY THE REQUIREMENTS. You should check the requirements and make the adjustments for your setup.
Using this template, you can run the task by using `yarn hardhat --network <network> createDaoTemplate --oracle <oracle address> --template <your template json>` and this should provide you with a template id.
For example, on Goerli using the default template this would be:`yarn hardhat --network goerli createDaoTemplate ---oracle 0x6F80C5cBCF9FbC2dA2F0675E56A5900BB70Df72f --template '{ "title": "Did the proposal with the id %s pass the execution of the transactions with hash 0x%s?", "lang": "en", "type": "bool", "category": "DAO Proposal" }'`
For this guide we will assume that the returned template id is `0x0000000000000000000000000000000000000000000000000000000000000dad`.
You can also create your template using the [Reality.eth Template Builder UI](https://reality.eth.link/app/template-generator/). For more info on using it, [use this guide](https://gnosis.github.io/zodiac/docs/tutorial-module-reality/add-template#template-builder).
Now that we have a template, a hardhat task can be used to deploy a Reality Module instance. The Reality Module will be linked to one DAO and an oracle.
The module has ten variables that must be set:- `Owner`: Address that can call setter functions- `Avatar`: Address of the DAO (e.g a Gnosis Safe)- `Target`: Address on which the module will call `execModuleTransaction()`- `Oracle`: Address of the oracle (e.g RealitioV3 contract address)- `Timeout`: Duration that answers can be submitted to the oracle- `Cooldown`: Duration (in seconds) required before the transaction can be executed (after the timeout has expired)- `Expiration`: Duration that a transaction is valid in seconds (or 0 if valid forever) after the cooldown- `Bond`: Minimum bond that is required for an answer to be accepted- `Template ID`: ID of the template used for proposal questions (more information on how to format templates can be found in [their docs](https://github.com/realitio/realitio-dapp#structuring-and-fetching-information)
- `Arbitrator`: The oracle's arbitrator (e.g. see Realitio's arbitrator [requirements](https://realitio.github.io/docs/html/arbitrators.html) and its arbitrators [list](https://github.com/realitio/realitio-contracts/blob/master/config/arbitrators.json)).
Hardhat tasks can be used to deploy the Reality Module instance. There are two different ways to deploy the module, the first one is through a normal deployment, passing arguments to the constructor (without the `proxied` flag), or to deploy the module through a [Minimal Proxy Factory](https://eips.ethereum.org/EIPS/eip-1167) (with the `proxied` flag) to save on gas costs.
The master copy and factory address can be found in the [Zodiac repository](https://github.com/gnosis/zodiac/blob/master/src/factory/constants.ts). These are the addresses used when deploying the module through the factory.
This task requires the following parameters:- `Owner`: Address that can call setter functions- `Avatar`: Address of the DAO (e.g a Gnosis Safe)- `Target`: Address on which the module will call `execTransactionFromModule()` (e.g. the next Zodiac module in the chain or the Avatar address)
- `Oracle`: Address of the oracle (e.g RealityETH contract address)- `template`: the template to be used with RealitioV3- `iserc20` (Optional): If set to true, the module `RealityERC20` is going to be deployed, otherwise `RealityETH` is deployed (false by default)
- `proxied` (Optional): Deploys the module through a proxy factoryThere are more optional parameters, for more information run `yarn hardhat setup --help`.An example for this on Goerli would be:`yarn hardhat --network goerli setup --owner <owner_address> --avatar <avatar_address> --target <target_address> --oracle 0x6F80C5cBCF9FbC2dA2F0675E56A5900BB70Df72f --template 0x0000000000000000000000000000000000000000000000000000000000000dad`
Once the module has been deployed, you should verify the source code. (Note: It is likely that Etherscan will verify it automatically, but just in case, you should verify it yourself.) If you use a network that is Etherscan compatible, and you configure the `ETHERSCAN_API_KEY` in your environment, you can use the provided hardhat task to do this.
An example of this on Goerli would be:`yarn hardhat --network goerli verifyEtherscan --module 0x4242424242424242424242424242424242424242 --owner <owner_address> --avatar <avatar_address> --target <target_address> --oracle 0x6F80C5cBCF9FbC2dA2F0675E56A5900BB70Df72f --template 0x0000000000000000000000000000000000000000000000000000000000000dad`
### Enabling the moduleTo allow the Reality Module to actually execute transactions, you must enable it on the Gnosis Safe to which it is connected. For this, it is possible to use the Zodiac app (enabling a custom module with the address of your newly deployed module above) or the Transaction Builder on https://gnosis-safe.io. For this you can follow our tutorial on [adding a module with the transaction builder](https://help.gnosis-safe.io/en/articles/4934427-add-a-module).
## Snapshot integrationTo setup the newly deployed module on snapshot view our [Snapshot integration guide here.](https://gnosis.github.io/zodiac/docs/tutorial-module-reality/integrate-snapshot).
## Monitoring your moduleBecause anyone can submit proposals to your module, it is strongly recommended to put in place monitoring practices. The Reality Module relies on the oracle (e.g. Reality.eth) to provide the correct answer, so that no malicious transactions are executed. In the worst case, the avatar (e.g. the connected Gnosis Safe) can invalidate a submitted proposal. See the [README](../README.md) for more information on this.
To make sure that all of the involved stakeholders can react in a timely manner, the events emitted by the module contract should be monitored. Each time a new proposal is submitted, the contract will emit a `ProposalQuestionCreated` event with the following parameters:
```event ProposalQuestionCreated( bytes32 indexed questionId, // e.g. Realityeth question id string indexed proposalId // e.g. Snapshot proposal id);```There are different services available for monitoring such as the [OpenZepplin Defender Sentinel](https://docs.openzeppelin.com/defender/sentinel).
## SupportIf you have any questions about the Reality Module or the Zodiac collection of tools, join the [Gnosis Guild Discord](https://discord.gg/wwmBWTgyEq).
## Deploy a master copyThe master copy contracts can be deployed through the `yarn deploy` command. Note that this only should be done if the Reality Module contracts are updated. The ones referred to on the [Zodiac repository](https://github.com/gnosis/zodiac/blob/master/src/factory/constants.ts) should be used.
