CoinSetupTestBase just create 1 million accounts with 10000 balance without tx, it should be much faster.

ExecLuaWithParam will not close lua.LState, so you should close it manually afterwards.

TxFromBytes is just the reverse operation of TxToBytes.

TxHash hashes ICivilTx.

TxSign now will also embed the pubkey of the signer, don't need filling pubkey manually.

TxToBytes defines a universal way to serialize ICivilTx.

TxVerifySignature verifies the signature carried by the ICivilTx.