Decentrailized Application Engine

based on Blockchain Ecosystem

NGIN is pronounced "engine"

Features

Thoroughly new chain, modern design from scratch with high tps
Written in go, not a fork of any other chain
Optional less, or no storage cost(mem only)
With humanizing numeric account model, users can send tx with memorable short number
High security with Sheet and Vault(Block) model
Powerful and scalable types of tx
Support Multi-Tx, sending coins to different recipants in the same time
Powerful WebAssembly VM support based on account's contract
Contract is more maintainable than ethereum
Libp2p(ipfs) powered p2p networking
Support NAT & UPnP, no public IP requirement
Available anonymous address for saving balance
Using the schnorr signature, allowing Multi-Sig when sending and receiving
Fee Burnt Policy keeps the mainnet coin NG's value
Using JSON RPC v2 API, be friendly to the developers

Auto switch to the best one when chain branching
Addresses are for receiving coins only
Require register an account on chain for sending
Support zero fee transaction
...

"NGIN is the best public PoW chain yet.” Leonardo da Vinci

Structure

sequenceDiagram    
    Address ->> Account: maintain the balance(recv)
    Account ->> Address: consume the balance(send)
    WebAssembly ->> Account: apply account state.
    Account->>Sheet: constitute
    Tx->>State: Verify and Apply
    State->>Sheet: generate
    Sheet->>P2P: Sync or tigger chain fork
    Tx->>Block: Compound
    Tx->>P2P: Broadcast
    Block->>Chain: Link up
    Block->>P2P: Broadcast
    Chain-->P2P: Sync and fork
    Chain->>State: Verifiy blocks
    Block->>State: Apply new Txs
    Sheet->>Account: Apply transaction, assign and append tx
    Account->>WebAssembly: Edit backend(Assign, Append)
    Tx ->> WebAssembly: Tigger events(Transaction)

ngcore

License:

GPLv3 for all pre-release version (under v0.1.0)
MIT for all version after release

"ngcore" is the third-version full-node daemon on NGIN

Concurrently, the "ngbiz" is a new try for union chain based on ngcore's codebase, within which we use PBFT replacing PoW consensus.

The first two versions are "ngind"(based on go-ethereum) and "ngd"(aka ngdaemon, published on internal git repo not github) Initially, NGIN project was aiming to build an internet serach engine(like google) ecosystem based on blockchain But ngind was soon deprecated due to the origin Russian team's plan. And then ngd/ngdaemon's team continued their project but then it was also deprecated before releasing because of the team broke up. Some codes of ngd/ngdaemon are inherited by ngcore when ngcore starts, but now all be placed by new codes.

From the view of codebase, ngcore is not a fork of any project. Currently, ngcore has implemented all core functions of a blockchain public chain, like p2p network protocol, memory-safe VM based on WebAssembly, etc.

Now, ngcore is on alpha period.

WASMan

License: MIT

WASMan(WebAssembly Manager) is another wasm interpreter engine for gophers and blockchain.

Currently, WASMan has been assembled into the ngcore's ngstate module, acting as the contract backend, which means ngcore has already be able to run webassembly contracts on blockchain.

Features

All-in-One W3C standard webassembly interpreter
Support the toll(gas) station design, which is necessary under blockchain environment
Provide cli tool for testing

Some webassembly examples on rust!

hostbytes source → runtime
hoststring source → runtime
log source → runtime
numeric source

Hawkhover

Hawkhover a multi-platform GUI wallet for NGIN daemon, which is designed by dart and flutter and can be installed on Windows/Linux desktop, Android and iOS.

Hawkhover will be released after ngcore's beta period

Diff between BTC & NGIN

Goal of NGIN, not creating any crypto currency or building a new payment method, is maintaining a decentrialized application engine with reliable blockchain ecosystem
Using number account, not garbled string. So more convenient.
Using Schnorr signature，not ECDSA: Schnorr vs ECDSA
No half-life period, NGIN using Fee Destory Policy to keep the value of mainnet coin.
...

Diff between ETH & NGIN

Goal of NGIN, not creating token ecosystem, is maintaining a decentrialized application engine with reliable blockchain ecosystem
NGIN suggests non-financial decentralized applications like spiders, storages and webservices etc.
Using number account, not garbled string. So more convenient.
Using Schnorr signature，not ECDSA:: Schnorr vs ECDSA
No EVM，and NGIN assembles more common WebAssembly VM, with which developers can create their app with asm.js, rust, kotlin, c, c++ etc.
...

Life circle of a WASM contract

stateDiagram-v2
    [*] --> LifeCircle: register a account
    state LifeCircle {
        [*] --> WebAssemblyVM: deploy with assignTx(from owner)
        WebAssemblyVM --> EmptyContract: erase all with assignTx(from owner)
        AccountA-->WebAssemblyVM: effect the context
        WebAssemblyVM-->AccountA: get the new context
        AccountB-->WebAssemblyVM: can also effect the context
        AccountC-->WebAssemblyVM: get failed to assign or append the contract
        WebAssemblyVM --> [*]: erase with assignTx(from owner)
    }

Steps to build and deploy a WASM contract

stateDiagram-v2
    [*] --> Rust/C: write source code
    Rust/C --> WebAssebmlyBinaryFile: compile with the correct toolchain
    WebAssebmlyBinaryFile --> WASMan: use WASMan to test your contract
    WebAssebmlyBinaryFile --> AccountContract: upload the binary to the NGIN network with wallet toolset
    AccountContract --> InitializedVM: some maybe need to initialize the context for serving 
    AccountContract --> InitializedVM: some dont need any action