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Mastering Ethereum Part I

Account contains:
-Address (rightmost 160 bits of Keccak(SHA-3) hash of public key)
-Balance
-Nonce
-Storage and code

Assert(false) compiles to 0xfe, uses up all gas and reverts all changes

Big-endian: most significant digits first
Little-endian: least significant digits first

BIPS: bitcoin improvement proposals

Byte code: numeric format virtual machine executable

Contract account: An account containing code that executes when receiving a transaction from another account.

Contract creation transaction: Special transaction with "zero address" as recipient that register a contact and recode it on the Ethereum blockchain

Digital signature: Using a private key which the user produces a short string that can prove with the corresponding public key plus the signature(short string) combine to verify that document(transaction) was created by the user who owns the private key.

Gas: The computational cost of an execution on a smart contract.

Turing Complete: General-purpose computer. If a programming language or system can have the ability to start the execute a loop of an undetermined size. Halting problem a none Turing complete system will not be able to know if the execution a looping function given arbitrary input will eventually stop running for you start the execution.

Ethereum: A deterministic out unbounded state machine

A fallback or default function is the transaction that triggered the contract didn't name any declared function, default function is usually the one that receives ether.

RPC: Remote Procedure Call We are sending a message, and that might end up storing something in the database to keep a history, which might be another RPC call. It's more core and lower level of API binary data format and use TCP Protocol

API: Application programing interface... Client server relationship REST stands for “representational state transfer,” rest is good at making CRUD (create, read, update, delete) use HTTP Protocol


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