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The following wallet on Etherscan shows 3 transactions of Wrapped Ether (WETH) being transferred in under the ERC-20 transactions tab, a large amount, but not how they are transferred out, assuming that the wallet owner did move the funds out

How were they able to move the WETH out of the wallet without it appearing in Etherscan? Might they have converted the funds using a DeFi swap platform to a stablecoin or Monero or something that was untraceable?

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They were not transfered out.

Those 3 transactions summ up to : 19.62795 WETH.

You can go on the WETH contract page and read the balance of the address refered to by your transactions : 0x77F0DECBa8a2200c49BA5B1c2Fc5D85D0C608e2d.

The output is : 19627950000000000000 which divided by 10^decimals equals : 19.62795

No transactions is showing an approve or transfer call, because there was none. The address is still the owner of all the WETH received.

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  • Is there a way for them to move the WETH out of the wallet without it appearing in Etherscan? Might they convert the funds using a DeFi swap platform to a stablecoin or Monero or something that is untraceable, resulting in the BalanceOf changing to 0 wei?
    – user610620
    Nov 23 '21 at 13:27
  • They would need to either approve a spender, or transfer the funds themselves. Either way, those require a tx to be sent, so it will be visible on etherscan.
    – hroussille
    Nov 23 '21 at 13:39
  • So there's no way to empty funds or tokens from an Eth wallet inconspicuously whatsoever? Everything is traceable?
    – user610620
    Nov 24 '21 at 6:43
  • No, a state change has to be approved by the network, so it has to be visible on the network.
    – hroussille
    Nov 24 '21 at 8:52
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    Yes, it seems that you are refering to something like tornado cash : tornado.cash this is exactly what they do by relying on Zk-SNARKS.
    – hroussille
    Nov 24 '21 at 14:06

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