Discussion (350 words - APA format) + 3 Questions

Professor MichaelG. Solomon

BLCN 631–BlockchainImplementation

EFD Chapter 11–Deploying andMaintatingEthereum Apps

Deploying SmartContracts

• Deploying your smart contract

• Really means deploying to a liveblockchain
• You already deployed to Ganache

• Local testing (Ganache) is only thebeginning

• Good for general testing

• Functional, integration, etc.

• Single user, no miners

Local versus Live Blockchains

Live TestBlockchains

• Ropsten

• Similar to Ethereum mainnet

• Rinkeby

• Proof of Authority (PoA)consensus

• Kovan

• Doesn’t support geth (supportsParity)

ManagingMultipleAccounts

• Multiple blockchains =multiple accounts

• Multiple connections as well

• Infura–provider ofblockchain access

• Multiple networks
• Free
• •https://infura.io/

Setting up Truffle

• Edit truffle-config.js

• Defines multiple networks (blockchains)
• UseInfurainfo
• We’ll define login info in secrets.js

FundingYour TestAccount(s)

• Ether faucet

• Specific to each network
• “Fake” cryptocurrency

• Ropsten faucet

• •https://faucet.ropsten.be/

• Verify your account balance

• MetaMask helps here
• Select a network to view balance

CompileandDeploy

• The rest is the same asbefore
• Instead of using thedevelopment network

• Specify another network
• Use the label you definedintruffle-config.js

Summary