A smart marriage contract on Ethereum using Truffle, a plain HTML, JS + Bootstrap 4 frontend and Web3.
Make sure npm, Truffle and Ganache is installed on your machine. Truffle is required with version v4.1.15. Use npm to download all project dependencies:
npm install
First create a new file called secrets.js in the root of the project directory. The privage keys are used by Truffle to deploy the contract.
module.exports = {
privateKeysPrivateTestnet: [
"dd4e...fa41" // private testnet private key
],
privateKeysRopstenTestnet: [
"bc35...ffd6" // ropsten testnet private key
],
privateKeysMainnet: [
"ba1a...336e" // mainnet private key
],
infuraApiKey: "f5db...da74" // infura api key (only required for ropsten and mainnet deployment)
}Make sure there is enough ETH on the wallet to cover deployment costs. Compile and deploy the smart contract to the private testnet using Truffle:
truffle deploy
If you only want to deploy a specific migration (e.g. to save gas):
truffle deploy -f <migration number> --to <migration number>
Start the web server:
npm run dev
The smart contract is already deployed and can be found at:
0xb586324bf62224b414849b9e77d4f57ed3f10dfe👉 find it on Etherscan
0x6947335452cb7a452fc337c28cb0d597806c7672👉 find it on Etherscan
Feel free to install MetaMask and interact with the contract (as far as you are allowed to 😉).
Assets are stored in an encrypted format on the blockchain to ensure privacy. Ethereum does not support encryption at the moment so CryptoJS is used to perform client side encryption/decryption. You can access the encrypted assets on the Ropsten testnet using the key: block42
This project is licensed under the MIT license. For more information see LICENSE.md.
The MIT License
Copyright (c) 2019 block42 Blockchain Company GmbH
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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copies of the Software, and to permit persons to whom the Software is
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The above copyright notice and this permission notice shall be included in
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.