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I'm currently trying to reenact a random transaction and I've come across a weird call to 0x0000000000000000000000000000000000000002. Even weirder, this call seems to actually do something since the memory at address 0x60-0x7f is changed afterwards.

Can someone explain what is happening here?

Here's a link to the remix debug trace. It's instruction 2610.

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I just solved it. Address 1, 2, 3 and 4 are builtin contracts for ecrecover, sha256, ripemd160 and identity respectively.

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