Open Knowledge

Decentralized open linked data for your (decentralized) applications.

Note: This library is in early development phase, and therefore not suitable for production use.

Usage

First, install the library via npm:

$ npm install git+https://[e-mail]/s1na/open-knowledge.git

IPFS and web3 are also peer dependencies, and should be installed:

$ npm install ipfs-api
$ npm install web3

Import the library in your code and instantiate an object according to the node example. Then you can query the data:

let res = await ok.execute(`
  PREFIX dbr: <http://dbpedia.org/resource/>
  PREFIX dbo: <http://dbpedia.org/ontology/>
  SELECT *
  {
    dbr:Lucky_Starr_and_the_Big_Sun_of_Mercury dbo:author ?o.
    ?s dbo:influenced ?o
  } LIMIT 15
`)

Development Setup

You will need Node.js and either npm or yarn.

# Install dependencies, in project root
$ npm install

# Install rollup, for bundling the library
$ sudo npm -g install rollup

# Install truffle, for building contracts
$ sudo npm -g install truffle

# Install ganache-cli, for a custom ethereum network
$ sudo npm -g install ganache-cli

# Start IPFS daemon
$ ipfs daemon

# Start ganache, with network name dev
$ ganache-cli -i dev

# To build contracts
$ truffle build

# To build library, the result will be in dist/
$ npm run build

# To run node examples
$ cd example/node
$ npm install
$ node publish.js
$ node index.js

Acknowledgement

This project is being developed as part of the master's thesis of Sina Mahmoodi at Fraunhofer SCAI.