Foundry · AERE Documentation

A working Foundry setup for chain 2800.

Configuration

# foundry.toml
[profile.default]
src = "src"
out = "out"
libs = ["lib"]
evm_version = "cancun"
optimizer = true
optimizer_runs = 200

[rpc_endpoints]
aere = "https://rpc.aere.network"

evm_version can be cancun, prague, osaka or earlier.

Deploy

export PRIVATE_KEY=0x…

forge create src/Counter.sol:Counter \
  --rpc-url aere \
  --chain 2800 \
  --private-key $PRIVATE_KEY

Call and send

cast block-number --rpc-url aere

cast call 0xCONTRACT "value()(uint256)" --rpc-url aere

cast send 0xCONTRACT "bump()" \
  --rpc-url aere --chain 2800 --private-key $PRIVATE_KEY

Calling a post-quantum precompile from a test

The verifiers are plain addresses, so cast call reaches them directly. This asks 0x0AE5 for 32 bytes of SHAKE256 over the bytes abc:

cast call 0x0000000000000000000000000000000000000ae5 \
  0x0000000000000000000000000000000000000000000000000000000000000020616263 \
  --rpc-url aere

For the signature verifiers, read Falcon input framing first. They return a zero word for a wrong layout and for an invalid signature alike, so put a known-good vector in the same test as a positive control.

Notes

Forking. --fork-url against the public endpoint works for recent blocks only: state is kept for 512 blocks. Forking deeper needs your own archive node.

Finality. For a validator one confirmation is final. From block 25,080,000 (AIP-22 stage 5) the public endpoint is a node outside consensus, whose latest block is final once the next anchor covers it, so for a value that must not be reversed compare the receipt block with cast block finalized, at most one anchor interval (32 blocks, about 20 seconds) behind the head.

Fee floor. The base fee cannot go below 1 Gwei. Let cast read fee data rather than pinning a gas price by hand.

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