Allows multiple parties to agree on transactions before execution. Features a disaster recovery mode, where after a predefined period of inactivity any party will be able to spend from the wallet.
Based off gnosis/MultiSigWallet. This smart contract features the following key differences:
- Changing of owners is not allowed, in order to minimise the attack surface.
- Time-activated disaster recovery mode / dead man's switch
- Only owners can execute transactions - fixes certain replay attacks reported with the base contract
git clone https://github.com/danny-wu/MultiSigWallet.git
cd MultiSigWallet
vagrant up
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Change
contracts/deploy/MultiSig.jsonwith the addresses of the owners, the quroum reqired for transactions to be executed, and the inactivity time in seconds. 86400 seconds = 1 day. -
If you don't have a local ethereum node running, sign up for an API key with http://infura.io/
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Deposit at least 0.1 ETH into a new Ethereum address, which will be used to create the contract. This address doesn't have to be an owner.
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In the vagrant box (
vagrant ssh), execute the following:
cd /vagrant/contracts/
python deploy.py -f deploy/MultiSig.json -protocol https -host mainnet.infura.io/<YOUR_INFURA_API_KEY> -port 80 -private_key <PRIVATE_KEY_OF_CONTRACT_CREATOR>
- You should see the contract address in the output.
cd /vagrant/contracts/
python -m unittest tests.test_multisig_wallet
cd /vagrant/contracts/
python -m unittest discover tests
This implementation does not allow the creation of smart contracts via multisignature transactions. Transactions to address 0 cannot be done. Any other transaction can be done.
All contracts are WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
The following people have reviewed the code at the time of the linked commit:
- Stefan George (Georgi87): b9405cc30de4615e325b1d46c71cdef670bdeadc