Dear users:
TRONSCAN released the “Cancel Contract Approval" feature on May 14, 2021. Users can view all approved contracts in the "ACCOUNT" page - "LIST OF APPROVAL", and cancel approvals if needed. Users can also check the change history in the "Approval change history". Here are the steps:
What is contract approval?
Some TRON-based applications require TRC20 token approval before they can spend tokens on a user's behalf. Calling approve(spender, amount) on the token contract sets an allowance for the specified spender. The spender can then call transferFrom to transfer tokens from the user's address within that allowance, subject to the token contract's rules and the user's available balance. Approval itself does not transfer tokens and does not require depositing tokens into the spender contract first.
Why would I want to cancel contract approval?
If you are concerned that a contract may contain risks, you can cancel the approval granted to the contract to protect your assets. You need to re-approve the contract when it is triggered again. Please note that both approval cancellation and re-approval consume bandwidth and Energy.
Thank you for supporting TRONSCAN!
TRONSCAN Team
May 14, 2021
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