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Kroma Prover

Kroma is an Ethereum layer 2 network consisting of entities such as Proposer, Validators, Challengers, and more. The detailed explanations about our network and its entities can be found here.

This Prover is a component of the Kroma challenger that generates zkevm-proof for the Kroma blockchain. And the zkevm-proof is used as a fault proof to rectify the validator's misbehavior. The detailed explanations abount Challenge process can be found here.

Requirements

  • Rust(rustc 1.70.0-nightly)
  • Golang (go1.21.0)
  • axel installed for downloading KZG params

Download KZG Params

# Download Params for KZG with degree 21 and 26
> sh download_params.sh

Kroma Prover Binary

Prover server (entry: prover-server/src/server_main.rs)

# build
> cargo build --release --bin prover-server
# or build with Tachyon
> cargo build --release --bin prover-server --features tachyon

# run (default ip: "127.0.0.1:3030")
> CHAIN_ID=<CHAIN_ID> ./target/release/prover-server --endpoint <SERVER_IP>

Mock Prover server (which always return zero proof for test)

# build
> cargo build --release --bin prover-server --features mock-server

# run (default ip: "127.0.0.1:3030")
> CHAIN_ID=<CHAIN_ID> ./target/release/prover-server --endpoint "127.0.0.1:3030"

Mock client for test (entry: prover-grpc/src/mock_client.rs)

# build
> cargo build --release --bin mock-client

# run
> ./target/release/client-mock --prove true
# or
> ./target/release/client-mock --spec true

Legacy Binaries

Setup (entry: bin/src/setup.rs)
It generates parameter(s) for KZG into

# build
> cargo build --release --bin setup

# run (setup KZG parameters with degree 21 and 26 if ommitting `n` option)
> ./target/release/setup --n <DEGREE>

If you run into linking issues during setup you may need to run

> cp `find ./target/release/ | grep libzktrie.so` /usr/local/lib/

to move the zktrielib into a path where your linker can locate it

Prove (entry: bin/src/prove.rs)

# build
> cargo build --release --bin prove
# or build with Tachyon
> cargo build --release --bin prove --features tachyon

# CIRCUIT_TYPE: [evm, state, agg], `gen_sol` can be ommitted (default: true)
> CHAIN_ID=<CHAIN_ID> ./target/release/prove --trace <TRACE_JSON_PATH> --circuit <CIRCUIT_TYPE> --gen_sol true

License

Licensed under either of

at your option.