Peer - Browser on the Blockchain, Peer to Peer Chat, Email, Unlimited Storage, Password Manager.

https://ipfs.io/ipfs/QmQrPfFovKshKSYCy9kzUs3XPu2NpbqrBcM1HoYytASd9k

** This app is not deployed on mainnet yet, use the Ropsten Network **

This decentralized application uses Angular with the Truffle to build on the Ethereum Blockchain (smart contract management and deployment).

Click the link below for a live version on IPFS (Install an IPFS Node and Metamask chrome extension and choose the Ropsten Test Network)

https://ipfs.infura.io/TBD

Dependencies

Metamask

You will need to install the Metamask chrome extension in order to connect to the Ethereum network in your browser.

IPFS

You will need to install Go and IPFS to publish to the decentralized web. Instructions here https://gist.github.com/drwasho/ca224cbd4a21440f7cc1245e594398e4

Installation

In the root directory

1. npm install to install dependent libraries
2. truffle compile to compile your contracts in to the ./build directory.
3. truffle migrate to deploy those contracts to the network. The contracts will be automatically deployed to the development network in ./truffle-config.js
4. ng serve. Navigate to http://localhost:4200/
5. Make sure there are no errors in browser console

Build

Run ng build to build the project. The build artifacts will be stored in the dist/ directory. Use the -prod flag for a production build.

Running unit tests for Angular App and for the Solidity Smart Contracts (.sol files)

1. Run ng test to execute the unit tests via Karma.
2. Run truffle test to run tests associated with your solidity smart contracts. The test folder for this can be found in the test directory at the root level of this project

Running end-to-end tests

Run ng e2e to execute the end-to-end tests via Protractor. Before running the tests make sure you are serving the app via ng serve.

Configuration

You will need an API key from Infura (provides Ehtereum and IPFS Nodes for your app). https://infura.io/

When you get your copy put it in ./truffle-config.js

You will also need your seed words in order to deploy contracts using your private keys. Just use the ones from your Metamask browser extension.

Deploying your contracts to the Test and Live Networks

Configuration - ./truffle-config.js

http://truffleframework.com/tutorials/deploying-to-the-live-network - A guide to deploying contracts with Truffle. http://truffleframework.com/tutorials/using-infura-custom-provider - Using a custom provider (In our case Infura).

Take a look at truffle-config.js - this contains all of the different configurations for each network.

I decided to use Infura so that I don't have to run an Ethereum node locally.

You will need to top up your Ethereum wallet with coins for the test network you choose to use in Metamask. There is a faucet for issuing test coins https://faucet.metamask.io/

truffle migrate --network ropsten
truffle migrate --network kovan
truffle migrate --network rinkeby

and of course the live ethereum network: WARNING uses real coins.

truffle migrate --network mainnet

Reminder: None of these will work without your Metamask seeds and Infura API key set up in truffle-config.js

Publishing to IPFS

You will need to IPFS command line tool installed. In the root directory run the following command..

ipfs add -r dist
ipfs name publish <hash-generated-from-previous-command>
ipfs name resolve <hash-generated-from-previous-command>

In the example above you can see that a hash is generated. You will be able to use this hash to find your app on the distributed network.

Just visit https://ipfs.io/ipfs/

Ethereum Development Notes

Web3.js Useful API

LevelDB Database

There is a LevelDB database which can be used to store data offline. It uses a simple key-value store

web3.db.putString('testDB', 'key', 'myString') // true

Whisper

https://github.com/ethereum/wiki/wiki/Whisper - Whisper Wiki https://www.youtube.com/watch?v=koZizelOUeI - Whisper: Achieving Darkness Presentation at DevCon

In short, Whisper is a peer to peer protocol for sending messages over the ethereum network anonymously and without censorship.

Swarm

http://swarm-guide.readthedocs.io/en/latest/introduction.html - Introduction to Ethereum Swarm

Solidity

Solidity is the language for writing smart contracts that get executed on the EVM (Ethereum Virtual Machine).

https://manojpramesh.github.io/solidity-cheatsheet/ - A handy cheat sheet

ENS (Ethereum Name System)

https://ens.readthedocs.io/en/latest/ - Ethereum Name System Documentation. Like DNS but for Ethereum.

Resources / Documentation / Code Repositories

https://github.com/LedgerHQ/ledger-wallet-api - Ledger Wallet JS API (Appears to be BTC only, can use Ledger Nano to send and receive funds, access account balances etc) http://truffleframework.com/tutorials/using-infura-custom-provider - Using Infura with Truffle https://github.com/raineorshine/solgraph - Check for security vulnerabilities within your smart contracts. https://github.com/diasdavid/ipscend - Publish your static content to IPFS easily.

IPFS Public Nodes

https://ipfs.io https://ipfs.infura.io

Donate

0x7f2cf947a62521dc6cb2fa73cc10c54109e78add - Ether