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A few months ago I deployed a test ERC20 token, called 2BC, to the Ethereum Kovan testnet.

This token can be found here: https://kovan.etherscan.io/token/0x938736ab99c0a46bbf8fe7fb06e6f0974902d581

Yesterday, I deployed a new ERC20 token, called BREV, to the Polygon mainnet.

This token can be found here: https://polygonscan.com/token/0x938736ab99c0a46bbf8fe7fb06e6f0974902d581

How on earth do these two tokens have the same contract address?

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  • because you have the same nonce on the Owner's account on both networks
    – Nulik
    Aug 18 at 1:38
  • @Nulik Does it not also depend on the code of the smart contract? Aug 18 at 10:23
  • */ no */** .
    – Nulik
    Aug 18 at 17:33
  • @Nulik Ok. Thanks. Aug 18 at 20:20
  • As said by Nulik if the networks use the same rules as Ethereum then the contract's address follows a formula that depends on parameters that a user can control, like address, nonce, init bytecode, etc.
    – Ismael
    Aug 21 at 16:22