Blockchain Academy
We'll get together for networking with people interested in Blockchain including developers and anyone curious about Blockchain.

opcode

An opcode is a computer command code, which is a sign of commands to perform. Smart contract code is a structure that is executed after the bytecode is converted to opcodes through the Etherem Virtual Machine (EVM). EVM will continue to operate with increasing opcode counters from 0 and will consume gas until it encounters an error, STOP, or RETURN command, or until execution is completely terminated. Depending on the code designed, in some cases it will consume a lot of gas. In the Yellow paper of Ethereum, the GAS consumption for opcodes operating in EVM is written.



(Image source : https://ethereum.github.io/yellowpaper/paper.pdf)