Adivin Prediction Market
An EVM based prediction market. Users deposit their wager in an Escrow contract in exchange for an ERC1155 token representation of their bet. Prediction tokens are tradable on any secondary market (ex: opensean). Once the market expires, an Oracle submits the winning result. Users can then cash out their winnings from the Escrow contract. Cashing out a wager results in the user burning their ERC1155 token and receiving their winnings from the Escrow contract.
Set up environment
Assuming you already have Foundry installed on your computer, update it to the latest version:
foundryup
Also, make sure to run yarn
to install all the dependencies.
Finally, yarn build
to build the project.
How to Deploy
Create a .env
file in the root directory. Use .env.example
as a template
source .env
to load the environment variables
Deploy the contract factory
# load the environment variables
source .env
forge script script/FactoryDeployer.s.sol:FactoryDeployer --rpc-url $MUMBAI_RPC_URL --broadcast --optimizer-runs 2000 -vv --sig "deploy()"
# OR deploy it with a test market and test erc20
forge script script/FactoryDeployer.s.sol:FactoryDeployer --rpc-url $MUMBAI_RPC_URL --broadcast --optimizer-runs 2000 -vv --sig "deployWithTestMarket()"
MUMBAI_RPC_URL
can be replaced with MAINNET_RPC_URL
if you want to deploy to mainnet.
How to verify source code on polygonscan
Contract source code verification will have to be done manually on Polygonscan.
First, run yarn flatten
to flatten the contracts. This will create a flattened
directory with the flattened contracts.
Then, go to Polygonscan and verify the contracts. Make sure to select "Single File", "Solidity Compiler" 0.8.17
for the compiler version, and "Optimized".
When prompted for the source, copy and paste the contents of flattened/Factory.flattened.sol
into the text box.
Design Spec
Actors
- Administrator
- User
- Oracle
Administrator
Actions
- Create Market
- Open Market
- Pause Market
- Set Oracle
- Set Escrow
User
Actions
- Place Bet
- Cashout Bet
Oracle
Actions
- Set Market Result (MarketState == FINISHED)
Contracts
- Factory: Creates markets
- PredictionMarket: ERC1155 wrapper representing a prediction
- Escrow: Holds all wagers