Catena Smart Contract

Used to publish NRC public funding disclosures and on the Ethereum blockchain.

Built using the Truffle Framework.

Usage

Install:

npm install @catena/contract

Example usage:

const { CatenaContract } = require('@catena/contract')

const catenaContract = CatenaContract(web3)

catenaContract.getDisclosure(687)
  .then(result => console.log(result))

For more information on using a truffle contract see Truffle Docs.

Development

Setup

• Install node dependencies: npm install
• Install an ethereum node: Parity or Geth

Parity

Parity works well but you must have the geth flag enabled or truffle migrations will fail.

parity --chain rinkeby --geth

Optionally, add the following for more convenient testing:

--unlock <address> --password <passwordfile>

Geth

If connecting to an actual testnet or mainnet network, you will first need time to sync the blockchain. Running in --fast mode helps:

geth --fast --rpc --rpcapi eth,net,web3,personal --rpccorsdomain="*"

Using mist:

./mist --syncmode=fast --cache=1024

To test using rinkeby:

geth --rinkeby --fast --rpc --rpcapi eth,net,web3,personal --rpccorsdomain="*"

Attaching to the geth node (assuming it's on localhost):

geth attach http://127.0.0.1:8545

• geth commands

From the geth console you can look at the balance of your primary account:

eth.getBalance("0x0d9cf77f30e7af582762418d7011ef486a388275")

Also, you can unlock your primary account to use its ether for testing or execution:

personal.unlockAccount("0x0d9cf77c30e7af582752418d7011ef486a388275", "password123", 0)

Testing

Testing the smart contract can be done as follows:

npm test

This will start a testrpc server and run truffle test. To run a specific test:

npm test test/DisclosureManageTests.sol

If you want to run tests on a different network like rinkeby, for example, use:

npm test --network rinkeby