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Opcode

Smart Contracts 4 references

A single instruction in a virtual machine or scripting language. EVM opcodes define computational and state operations that contracts can perform.

Appears in 4 whitepaper sections

$ETH Ethereum
Code Execution
...code is stored as a sequence of bytes, where each byte represents an operation (opcode) that the EVM can execute. The execution model is deliberately simple and deter...
$USDT Tether
Technology Stack
...s its transaction data within standard Bitcoin transactions using the OP_RETURN opcode, a mechanism that allows up to 80 bytes of arbitrary data to be included in a B...
$BCH Bitcoin Cash
Technical Specifications
...ased smart contracts and other advanced scripting patterns. The OP_REVERSEBYTES opcode, native introspection opcodes, and larger script and stack limits have further ...
OP_RETURN and Data Applications
Bitcoin Cash supports the OP_RETURN opcode, which allows users to embed arbitrary data in the blockchain within a transact...

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