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tx.origin Check.md

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145 - tx.origin Check

Recall that Ethereum has two types of accounts: Externally Owned Account (EOA) and Contract Account.

Transactions can originate only from EOAs.

In situations where contracts would like to determine if the msg.sender was a contract or not, checking if msg.sender is equal to tx.origin is an effective check.

Slide Screenshot

145.jpg

Slide Text

  • Ethereum Accounts
    • EOA vs Contract
  • Tx Origin -> Only EOA
  • msg.sender == tx.origin
  • Sender -> Contract or Not

References

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