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WARNING: This software is still experimental, we do not recommend it for production use.

Prerequisites

To get started, you need to have Rust installed. If you haven't done so, follow the instructions here.

Next, install the cargo risczero tool. We'll use cargo binstall to facilitate this. Detailed instructions can be found at cargo-binstall.

cargo install cargo-binstall
cargo binstall cargo-risczero

Finally, install the risc0 toolchain with the following command:

cargo risczero install

You'll also need access to an Ethereum RPC node, such as through Alchemy.

Run the example

To run the example, which queries the USDT balance of 0x9737100D2F42a196DE56ED0d1f6fF598a250E7E4 on Ethereum, execute the following command:

RPC_URL=https://ethereum-rpc.publicnode.com RUST_LOG=info cargo run --release

The output should resemble the following:

2024-03-12T11:06:14.549457Z  INFO view_call::host: preflight 'balanceOf(address)' method by 0xf08A50178dfcDe18524640EA6618a1f965821715 on 0xaA8E23Fb1079EA71e0a56F48a2aA51851D8433D0
For block 5470081 `balanceOf(address)` returns: 399534748753251
Running the guest with the constructed input:
View call result: 399534748753251
2024-03-12T11:06:17.018205Z  INFO executor: risc0_zkvm::host::server::exec::executor: execution time: 538.5ms
2024-03-12T11:06:17.018224Z  INFO executor: risc0_zkvm::host::server::session: number of segments: 6
2024-03-12T11:06:17.018227Z  INFO executor: risc0_zkvm::host::server::session: total cycles: 5505024
2024-03-12T11:06:17.018229Z  INFO executor: risc0_zkvm::host::server::session: user cycles: 4179903
2024-03-12T11:06:17.018231Z  INFO executor: risc0_zkvm::host::server::session: cycle efficiency: 75%