System operations are used to perform various system-related operations, such as account creation, message calling, and execution control.
Mnemonic Value POP PUSH Gas Description Used to create a new account with the CREATE 0xf0 3 1 32,000 associated code.
A Complete Guide to Understanding This Blockchain Concept
Used to initiate a message call into a contract CALL 0xf1 7 1 40 account.
Used to initiate a message call into this account CALLCODE 0xf2 7 1 40 with an alternative account’s code.
RETURN 0xf3 2 0 0 Stops the execution and returns output data.
This is same as CALLCODE but does not change the DELEGATECALL 0xf4 6 1 40 current values of the sender and the value.
The only STATICCALL 0xfa 6 1 40 exception is that state changing operation are not permitted.
Stops (halts) the execution and the account is SUICIDE 0xff 1 0 0 registered for deletion later.
Why This Matters for Blockchain Technology
There are approximately 129 opcodes available in the EVM of the Byzantium release of Ethereum in total.
Key Points to Remember
- System operations System operations are used to perform various system-related operations, such as account creation, message calling, and execution control.
- Mnemonic Value POP PUSH Gas Description Used to create a new account with the CREATE 0xf0 3 1 32,000 associated code.
- Used to initiate a message call into a contract CALL 0xf1 7 1 40 account.
- Used to initiate a message call into this account CALLCODE 0xf2 7 1 40 with an alternative account’s code.
Conclusion
System operations represents one of the many innovative layers that make blockchain technology so powerful and transformative. As distributed systems continue to evolve, a solid understanding of these core concepts becomes increasingly valuable — not just for developers, but for anyone building, investing in, or working alongside blockchain-powered systems.
Whether you are just starting your blockchain journey or deepening existing expertise, mastering these fundamentals gives you the tools to think clearly about decentralized systems and make smarter decisions in this rapidly evolving space.