How can you confirm on-chain that a transaction was really sent by you? Don't worry—the class rep has the answer:
Every transaction from an Ethereum externally owned account has an incrementing nonce. The same nonce can only be included in a block once, which prevents the same transaction from being executed repeatedly.
A signature request that pops up in your wallet isn't necessarily for a transfer; it could also be a token approval or an off-chain signature. Once signed, its effects could be just as significant as a transfer.
There’s no homework for this lesson, but the market could give you a pop quiz at any time.
$BTC 75027.26（-1.18%）
#BTC
Every transaction from an Ethereum externally owned account has an incrementing nonce. The same nonce can only be included in a block once, which prevents the same transaction from being executed repeatedly.
A signature request that pops up in your wallet isn't necessarily for a transfer; it could also be a token approval or an off-chain signature. Once signed, its effects could be just as significant as a transfer.
There’s no homework for this lesson, but the market could give you a pop quiz at any time.
$BTC 75027.26（-1.18%）
#BTC