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Is it possible for smart contract to view past transactions done on it, in other words would it be possible for a smart contract to see who has sent it Ether since its inception?

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it is possible only if you had registred them (in a map for example). the smart contract hasn't the ability to explore the blockchain to know has a log of the transaction senders.

  • That is what I suspected. I am trying to write contract that accepts ETH and after a set date will allocate tokens to those, but as wel all know the fallback function cant do much (not even a save to a gloabl map) with a send(). – RFV5s Apr 26 '17 at 15:47
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    @RFVenter The contract could have a buyTokens payable function that checks the block number or timestamp and then allocates tokens. – eth Apr 27 '17 at 6:18

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