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RISC Zero View Call Proofs ERC20 Example Ethereum Deployment Guide

Note: This software is not production ready. Do not use in production.

Welcome to the RISC Zero View Call Proofs ERC20 Example Ethereum Deployment guide!

You can either:

Deploy on a local devnet

You can deploy your contracts and run an end-to-end test or demo as follows:

  1. Start a local testnet with anvil by running:

    anvil

    Once anvil is started, keep it running in the terminal, and switch to a new terminal.

  2. Set your environment variables:

    Note: This requires having access to a Bonsai API Key. To request an API key complete the form here.

    Alternatively you can generate your proofs locally, assuming you have a machine with an x86 architecture and Docker installed. In this case do not export Bonsai related env variables.

    # Anvil sets up a number of default wallets, and this private key is one of them.
export ETH_WALLET_PRIVATE_KEY=0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80
export BONSAI_API_KEY="YOUR_API_KEY" # see form linked in the previous section
export BONSAI_API_URL="BONSAI_API_URL" # provided with your api key

  3. Build the Project:

    cargo build

  4. Deploy the Counter contract. During creation, the Counter gets linked with an ERC20 token. To also deploy such a new token, you need to specify any TOKEN_OWNER address which will get funded with Toyken ERC20 tokens, for example the address of the private key:

    export TOKEN_OWNER=0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266

    Then, deploy the contracts running the following script:

    forge script --rpc-url http://localhost:8545 --broadcast DeployCounter

    This command should output something similar to:

    ...
== Logs ==
Deployed ERC20 TOYKEN to 0x5FbDB2315678afecb367f032d93F642f64180aa3
Deployed RiscZeroGroth16Verifier to 0xe7f1725E7734CE288F8367e1Bb143E90bb3F0512
Deployed Counter to 0x9fE46736679d2D9a65F0992F2272dE9f3c7fa6e0
...

    Save the ERC20 Toyken contract address to an env variable:

    export TOYKEN_ADDRESS=#COPY ERC20 TOYKEN ADDRESS FROM DEPOLY LOGS

    You can also use the following command to set the contract address if you have jq installed:

    export TOYKEN_ADDRESS=$(jq -re '.transactions[] | select(.contractName == "ERC20FixedSupply") | .contractAddress' ./broadcast/DeployCounter.s.sol/31337/run-latest.json)

    Save the Counter contract address to an env variable:

    export COUNTER_ADDRESS=#COPY COUNTER ADDRESS FROM DEPLOY LOGS

    You can also use the following command to set the contract address if you have jq installed:

    export COUNTER_ADDRESS=$(jq -re '.transactions[] | select(.contractName == "Counter") | .contractAddress' ./broadcast/DeployCounter.s.sol/31337/run-latest.json)

Interact with your local deployment

  1. Query the state:

    cast call --rpc-url http://localhost:8545 $COUNTER_ADDRESS 'get()(uint256)'

  2. Publish a new state

    RUST_LOG=info cargo run --bin publisher -- \
    --eth-wallet-private-key=$ETH_WALLET_PRIVATE_KEY \
    --eth-rpc-url=http://localhost:8545 \
    --counter-address=$COUNTER_ADDRESS \
    --token-contract=$TOYKEN_ADDRESS \
    --account=$TOKEN_OWNER

  3. Query the state again to see the change:

    cast call --rpc-url http://localhost:8545 $COUNTER_ADDRESS 'get()(uint256)'

Deploy your project on a public network

You can deploy the Counter contract on any Ethereum network such as Sepolia (in this example we will be using PublicNode) and run an end-to-end test or demo as follows:

Note: we'll be using an existing ERC20 contract for this example, specifically the USDT ERC20 contract deployed on Sepolia at address 0xaA8E23Fb1079EA71e0a56F48a2aA51851D8433D0.

  1. Get access to Bonsai and an Ethereum node running on a given testnet, e.g., Sepolia and export the following environment variables:

    Note: This requires having access to a Bonsai API Key. To request an API key complete the form here.

    Alternatively you can generate your proofs locally, assuming you have a machine with an x86 architecture and Docker installed. In this case do not export Bonsai related env variables.

    export BONSAI_API_KEY="YOUR_API_KEY" # see form linked in the previous section
export BONSAI_API_URL="BONSAI_API_URL" # provided with your api key
export ETH_WALLET_PRIVATE_KEY="YOUR_WALLET_PRIVATE_KEY" # the private hex-encoded key of your Sepolia testnet wallet
export TOKEN_CONTRACT=0xaA8E23Fb1079EA71e0a56F48a2aA51851D8433D0 # Sepolia USDT

  2. Build the project:

    cargo build

  3. Deploy the Counter contract by running:

    forge script --rpc-url https://ethereum-sepolia-rpc.publicnode.com --broadcast DeployCounter

    This command should output something similar to:

    ...
== Logs ==
Using ERC20 USDT at 0xaA8E23Fb1079EA71e0a56F48a2aA51851D8433D0
Deployed RiscZeroGroth16Verifier to 0x5a1677454B5530a15536EF662C6b27b14F699aBd
Deployed Counter to 0xb0827e4F251d29685170837C2C0eE204Dfef522c
...

    Save the Counter contract address to an env variable:

    export COUNTER_ADDRESS=#COPY COUNTER ADDRESS FROM DEPLOY LOGS

Interact with your testnet deployment

  1. Query the state. It should return 0 for a newly deployed Counter contract:

    cast call --rpc-url https://ethereum-sepolia-rpc.publicnode.com $COUNTER_ADDRESS 'get()(uint256)'

  2. Publish a new state

    RUST_LOG=info cargo run --bin publisher -- \
    --eth-wallet-private-key=$ETH_WALLET_PRIVATE_KEY \
    --eth-rpc-url=https://ethereum-sepolia-rpc.publicnode.com \
    --counter-address=$COUNTER_ADDRESS \
    --token-contract=$TOKEN_CONTRACT \
    --account=0x9737100D2F42a196DE56ED0d1f6fF598a250E7E4

  3. Query the state again to see the change:

    cast call --rpc-url https://ethereum-sepolia-rpc.publicnode.com $COUNTER_ADDRESS 'get()(uint256)'