Differences from EVM

TVM is basically compatible with EVM. However, it differs in some specific features and details.

• TVM uses the concept of energy instead of gas.
• No concept of gasprice. TVM has a stable energy price or floating rate from freezing TRX.
• There is no concept of block.difficulty. It is a constant 0.
• There is no concept of block.gaslimit. It is always 0.
• The selfbalance, chianid opcode is not supported.
• Most instructions consume almost the same amount of EVM, memory operation instructions consume less than EVM.
• The contract code created by the CREATE2 instruction is empty (i.e., currently a dummy implementation), extcodesize(address) = 0
• The contract address created by the CREATE2 instruction is calculated with a prefix of 0x41, not 0xff for EVM.
• The CREATE instruction creates a contract address calculated as keccak256(transaction root hash + nonce), where nonce is the index of the current internal transaction, starting from 0.
• Adding TRC10 token function and related opcodes
• Adding opcodes for bulk signature verification and multisig validation
• Adding shielded TRC20 contracts and several librustzcash instructions
• Internal Transaction has No data information.
• An extra error type TransactionException is introduced, it interrupts VM execution without consuming all energy.