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🛠️ Supersim

🚀 Getting Started

1. Install prerequisites: foundry

supersim requires anvil to be installed.

Follow this guide to install Foundry.

2. Deploy contract on local l1 node

chmod +x deploy-l1.sh
./deploy-l1.sh http://127.0.0.1:8545

3. Start supersim in vanilla mode

go run ./cmd --l1.host 127.0.0.1 --l1.port 8545

Vanilla mode will start a new chain, with the OP Stack contracts already deployed.

Chain Configuration
-----------------------
L1: Name: Local  ChainID: 900  RPC: http://127.0.0.1:8545  LogPath: /var/folders/y6/bkjdghqx1sn_3ypk1n0zy3040000gn/T/anvil-chain-900-3719464405

L2s: Predeploy Contracts Spec ( https://specs.optimism.io/protocol/predeploys.html )

  * Name: OPChainA  ChainID: 901  RPC: http://127.0.0.1:9545  LogPath: /var/folders/y6/bkjdghqx1sn_3ypk1n0zy3040000gn/T/anvil-chain-901-1956365912
    L1 Contracts:
     - OptimismPortal:         0x73eccD6288e117cAcA738BDAD4FEC51312166C1A
     - L1CrossDomainMessenger: 0x0D4ff719551E23185Aeb16FFbF2ABEbB90635942
     - L1StandardBridge:       0x5C7c905B505f0Cf40Ab6600d05e677F717916F6B

🔀 First steps

Example A: (L1 to L2) Deposit ETH from the L1 into the L2

1. Check initial balance on the L2 (chain 901)

Grab the balance of the sender account on L2:

cast balance 0xD3E6F38DACFD07e11e44f102393a20d249C1c221 --rpc-url http://127.0.0.1:9545

2. Fund sender account

 cast send 0xD3E6F38DACFD07e11e44f102393a20d249C1c221 --value 1ether --rpc-url http://127.0.0.1:8545 --private-key 0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80

3. Call bridgeETH function on the L1StandardBridgeProxy contract on the L1

Initiate a bridge transaction on the L1:

cast send 0x5C7c905B505f0Cf40Ab6600d05e677F717916F6B "bridgeETH(uint32 _minGasLimit, bytes calldata _extraData)" 50000 0x --value 0.1ether --rpc-url http://127.0.0.1:8545 --private-key 0x895223ed216470ca32b8151df1989d46d2cc8325282ba133b293c0d655eda7e2

4. Check the balance on the L2 (chain 901)

Verify that the ETH balance of the sender has increased on the L2:

cast balance 0xD3E6F38DACFD07e11e44f102393a20d249C1c221 --rpc-url http://127.0.0.1:9545