Fixes #147 Develop Airdrop dApp

[pacamara]

Fixes MyBitFoundation/MyBit-Network.tech#147 Develop Airdrop dApp

Status: Ready

Implemented and working:

• Create airdrop
• Sent Airdrops page
• Force Metamask login
• Tested against local MyBit-Chain, and ropsten

Review notes:

Main changes from MyBit-Trust code in:

• CreateNewPage/index.js
• utils/core.js
• 2_ERC20Airdrop_migration.js
• BlockchainInfo.js
• ERC20Airdrop.sol

How to test:

Ropsten:

• Update truffle.js with your Infura API key
• MyBit-Dropzone.tech $ bash compileDeployContracts.sh ropsten ropsten
• In separate terminal: MyBit-Dropzone.tech/front-end $ npm install MyBit-Dropzone.tech/front-end $ npm start
• Open http://localhost:3000/create-new
• Log into ropsten via metamask interstitial
• From contracts deployment step, note MyBitToken contract hash and add to metamask for account 1
• "Account 1" should already have total supply of MYB from contracts deployment step
• Select "Top 100 ETH addresses" recipient from dropdown
• Send airdrop
• After airdrop completes, open Sent Airdrops page at http://localhost:3000/sent-airdrops
• Click on Etherscan link and verify airdrop completed ok

Local MyBit-Chain:

As above but

• Deploy MyBit-Chain per https://github.com/MyBitFoundation/hello-network
• MyBit-Dropzone.tech $ bash compileDeployContracts.sh development private
• Select "19 local MyBit-Chain addresses" recipient from dropdown
• Etherscan link obviously will not work, can verify airdrop completion manually through metamask

Notes:

• UI in front-end/, based off MyBit-Trust
• Assumes intent is to airdrop MYB not ETH, as airdrop contract for ERC20 tokens.

[pacamara]

Screen recording of sending/verifying an airdrop on Ropsten:

Airdrops from the demo at https://ropsten.etherscan.io/address/0x5168927aded9b8b949803c220de0c745613d51c9

[0xjjpa]

This looks very well done and detailed @pacamara , thank you very much! Do you have a preview URL we could maybe review the project with it, or just a link to its README to know how to bootstrap it?

@csmartinsfct @kyledewy @cryptnotiq @AspacehUK please take a look at it.

[pacamara]

@jjperezaguinaga You're very welcome, cheers for the feedback! :beers:

Staging deployment : https://dropzone-pr4-staging.herokuapp.com

It now airdrops the official MYB ropsten token, 0xbb07c8c6e7cd15e2e6f944a5c2cac056c5476151 , same as MyBit-Trust, and same as given out by faucet. (Previously was deploying a separate token).

Have just realized it serves blank page if metamask not installed, will fix!

[pacamara]

Now the code is live on dropzone.mybit.io, will shutdown the staging instance.