Tools for Gnosis ICO:

• constracts/proxysender.sol: smart contract to collect ethers from different users and proxy ico bids
• bidProxy.js: small tool that wait for ico start and immediatelly call bidProxy() on the ProxySender contract

• Node.js version 7.9.0 or later
• Truffle version 3.2.1 or later (for testing)
• TestRPC (for testing)

The tool requires an ethereum node on main network, rpc enabled, accound 0 unlocked with some ethers to pay transaction fees. Run:

./bidProxy.js <proxy_address>

where <proxy_address> is the address of an istance of the ProxySender smart contract initialized with the address of the official DutchAuction smart contract for gnosis ico.

Reminder: to start a node (geth or parity) with an unlocked account use the --unlock <address> --password <file> parameters.

The simulation works only with TestRPC node because it requires the evm_increaseTime rpc method to skip the 1 week waiting period at the end of the auction.

Run ethereum node:

testrpc

Run ICO simulation:

truffle test test/ico_simulation.js

Before deploying the ProxySender smart contract, a DutchAuction instance is required and it must be initialized with the token address (the setup() method). ProxySender constructor requires the DutchAuction address as argument.

Steps:

• Before ICO start, users send own ethers to the ProxySender smartcontract using a normal transaction.
• Before ICO start, users can ask a refund calling the refund() method.
• After ICO start, bidProxy() must be called to send funds to the ICO contract (the bidProxy tool can be used).
• After ICO end, claimProxy() must be called to reclaim tokens for the proxy.
• After the tokens are reclaimed for the proxy, users reclaim own tokens sending a normal transaction with value 0 to the proxy address

Use the following method ids in the data field of transaction to call the contract methods:

ed9a3ac1 bidProxy()
30b66cee claimProxy()
590e1ae3 refund()