Trading Notes | Token Approvals
① Before selling ERC-20 tokens on a decentralized exchange, you usually need to sign an approval first, allowing the other contract to use your tokens.
② Revoking an approval is an on-chain transaction and requires a small Gas fee.
③ Before signing, check the token, amount, and other contract carefully. If anything is unclear, don't sign.
$ETH 2246.58 (+0.6%)
① Before selling ERC-20 tokens on a decentralized exchange, you usually need to sign an approval first, allowing the other contract to use your tokens.
② Revoking an approval is an on-chain transaction and requires a small Gas fee.
③ Before signing, check the token, amount, and other contract carefully. If anything is unclear, don't sign.
$ETH 2246.58 (+0.6%)
