DutchX - Gnosis Dutch Auction Trading Platform. This npm package provides all smartcontracts used in the project


4560.4.94 years ago4 years agoMinified + gzip package size for @gnosis.pm/dutch-exchange-smartcontracts in KB


Dutch X


Build Status

Collection of smart contracts for the Gnosis DutchX.


Install requirements with npm:

npm install


Start the TestRPC with bigger funding than usual, which is required for the tests:

npm run rpc

Please install at least node version >=7 for async/await for a correct execution

Run all tests

truffle test -s

The flag -s runs the tests in a silence mode. Additionally the flag -g can be added to plot the gas costs per test.

Compile and Deploy

These commands apply to the RPC provider running on port 8545. You may want to have TestRPC running in the background. They are really wrappers around the corresponding Truffle commands.

Compile all contracts to obtain ABI and bytecode:

truffle compile --all

Migrate all contracts:

truffle migrate --network NETWORK-NAME

Network Artifacts

Get network artifacts from the networks.json file:

node scripts/inject_artifacts.js

Extracting current network artifacts into networks.json file:

node scripts/extract_artifacts.js


There is a copy version hosted online at https://drive.google.com/file/d/1OojAb6ogvQKVolkGDNVY1Pu74DbTNET6/view You may want to download the pdf for external hyperlinks to work.

Auction state-diagram overview:

There is a copy version hosted online at https://drive.google.com/file/d/1hWHtf2_GnBhtb85Yj7I7Xe3mF6jPe08U/view


All variables of the smart contracts are public and can easily be access from other smartcontracts. This allows other smartcontracts to calculate specific prices. But the smartcontracts can also call:

getPriceInPastAuction(address token1, address token2, uint auctionIndex)

getPriceInPastAuction() gives a good estimate for market price [token1]/[token2] by averaging the the prices of [token1]:[token2] and [token2]:[token1] of the auctions with auctionIndex.


If you find any bugs or have a feature request, please open an issue on github!

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