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I am trying to understand how to retrieve the complete storage of a contract based on chaindata (e.g. geth) of a full node.

I have already found how to programmatically access the chaindata (which is basically a levelDB) and the special trie structure:

https://github.com/ethereumjs/merkle-patricia-tree

Is this the way to go to get the contract storage?

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  • What exactly are you trying to achieve? Dump the complete storage or lookup single slots?
    – ivicaa
    Mar 29, 2018 at 10:44
  • Thanks for the reply. I would like to dump the "used" storage :) And therefore to access mappings and struct values (of contracts), which are not stored linearly in the storage space (but keccak is involved to identify the memory location)
    – mateuszk87
    Mar 29, 2018 at 12:59

1 Answer 1

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Dumping storage is possible

Refer to the functionality of geth dump

a) https://github.com/ethereum/go-ethereum/blob/9e5f03b6c487175cc5aa1224e5e12fd573f483a7/core/state/dump.go

b) https://github.com/Arachnid/uscc/tree/master/submissions-2017/doughoyte

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