![]() ![]() Ethereum’s usage of public-key cryptography ensures that Alice can prove that she originally initiated the transaction request. If Alice wants to send ether from her own account to Bob’s account, Alice needs to create a transaction request and send it out to the network for verification. This prevents malicious actors from broadcasting fake transactions because you can always verify the sender of a transaction. You never really hold cryptocurrency, you hold private keys – the funds are always on Ethereum's ledger. Your private key is what you use to sign transactions, so it grants you custody over the funds associated with your account. ![]() They help prove that a transaction was actually signed by the sender and prevent forgeries. This trie encodes the hash of the storage contents of this account, and is empty by default.ĭiagram adapted from Ethereum EVM illustrated (opens in a new tab) Externally-owned accounts and key pairsĪn account is made up of a cryptographic pair of keys: public and private. A 256-bit hash of the root node of a Merkle Patricia trie that encodes the storage contents of the account (a mapping between 256-bit integer values), encoded into the trie as a mapping from the Keccak 256-bit hash of the 256-bit integer keys to the RLP-encoded 256-bit integer values. storageRoot – Sometimes known as a storage hash.For externally owned accounts, the codeHash field is the hash of an empty string. All such code fragments are contained in the state database under their corresponding hashes for later retrieval. It cannot be changed, unlike the other account fields. This EVM code gets executed if the account gets a message call. Contract accounts have code fragments programmed in that can perform different operations. ![]()
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