This is a simulation of the distributed implementation of Savjee Coin in Elixir using the Phoenix web framework.
Websockets are used to provide realtime graphs and stats for a bitcoin simulation. Several parameters of the simulation can be adjusted.
Chart.js is used as a graphing library for plotting the graphs.
To start your Phoenix server:
- Install dependencies with
mix deps.get - Create and migrate your database with
mix ecto.create && mix ecto.migrate - Install Node.js dependencies with
cd assets && npm install - Start Phoenix endpoint with
mix phx.server
Now you can visit localhost:4000 from your browser.
Ready to run in production? Please check our deployment guides.
Metrics displayed -
transactions-completed
blocks-mined
transactions-per-second
blocks-mined-per-second
transactions-per-block
All of these are displayed realtime in a chart along with the transaction ledger where transactions are added and are cleared (whenever a block is mined).
Initially, n number of peers are spawned (depends on user input). All of the peers randomly transact random number of bitcoins with each other. Random peers start mining and mine blocks. Each peer has their own copy of the blockchain. Whenever a new block gets mined, it is broadcasted to all other peers and is validated by everyone. Only then is it added to the blockchain.
Every Peer would have it's own public and private key. While signing a transaction, the peer signs it with it's private key and while verifying a transaction it is done with the public key given in the from_address field in the transaction. The erlang crypto library is used for signing and verification and hashing and the elliptic curve secp256k1 is used as is given in the bitcoin documentation.
A peer can mine bitcoins. The difficulty threshold is kept at 2 leading 0's but can be increased to any arbitary number. A mining reward is given to the peer who mines a block succesfully.
Wallets are implemented and peers in the network can check their balance.
Peers can perform transactions after digitally signing them and send bitcoins to each other. Everything gets recorded in the transaction ledger (PendingTransactions)which gets mined when a peer mines a new block.
- Official website: http://www.phoenixframework.org/
- Guides: http://phoenixframework.org/docs/overview
- Docs: https://hexdocs.pm/phoenix
- Mailing list: http://groups.google.com/group/phoenix-talk
- Source: https://github.com/phoenixframework/phoenix