Ref – 裁判区块链毕设代写

区块链毕设代写本文提供国外最新区块链项目源码下载,包括solidity,eth,fabric等blockchain区块链,Ref – 裁判区块链毕设代写 是一篇很好的国外资料

Ref

Fork from: https://github.com/nhancv/smartcontracts-app

Remix online IDE https://remix.ethereum.org/#optimize=true&runs=200&evmVersion=null&version=soljson-v0.8.3+commit.8d00100c.js

Install

TRUFFLE CLI

https://www.trufflesuite.com/docs/truffle/quickstart

npm install truffle -g 

Setup local Blockchain

Option1: Install Ganache – UI local blockchain

  • Download here: https://www.trufflesuite.com/ganache
  • How to start blockchain server?
    Open Ganache ->
    • New workspace: If you want to save your network status to use later -> Add Project -> Point to truffle/smartcontracts/truffle-config.js -> Save
    • Quickstart: If you don’t care about network status, just need a blockchain server to test your app.

Option2: Install Ganache cli

  • Download here: https://github.com/trufflesuite/ganache-cli
npm install -g ganache-cli 
  • How to start blockchain server?
# Generate new account set everytime you start ganache-cli 

Build and Deploy Contract

* Note: remember start local blockchain first if you want to test on your local  # Node libs install npm i  # Prepare wallet (skip this step for local deployment) cp .env.example .env Copy MNEMONIC generated by Ganache ACCOUNTS and paste to MNEMONIC value in .env created previous step  # Compile only  truffle compile  # Or Compile and deploy contract to local test truffle migrate  # Fow specific network truffle migrate --network <network_name>  # Publish & Verify Contract truffle run verify {contract_class_name}@{contract_address} --network <network_name>  # Validate Check on Ganache in Blocks, Transactions, Contracts, Events, Logs, ... 

Create Testing Solidity token:

  • Install Metamask
  • The ETH wallets generated automatically

Ropsten ETH Token

  • Open Metamask -> Switch env to Ropsten Test Network
Network Name: Ropsten Test Network New RPC URL: https://ropsten.infura.io/v3/undefined Chain ID: 3 Currency Symbol (optional): ETH Block Explorer URL (optional): https://ropsten.etherscan.io 
  • Get some ETH coin to deploy smart contract: https://faucet.ropsten.be/
  • Access: https://remix.ethereum.org/#optimize=false&runs=200&evmVersion=null&version=soljson-v0.8.1+commit.df193b15.js
    • Create contracts/ERC20Token.sol
    • Fill ERC20Token.sol with source code at: ./truffle/smartcontracts/contracts/ERC20Token.sol
    • Modify ERC20Token.sol to your token info
    • Compile tab: Compile ERC20Token.sol
    • Deploy tab: Select Environment -> Injected Web3 -> Select Contract your contract class name -> Deploy

Binance Smart Chain BEP20 Token

https://academy.binance.com/en/articles/connecting-metamask-to-binance-smart-chain

  • Open Metamask -> Custom RPC
# Testnet Network Name: Binance Smart Chain - Testnet New RPC URL: https://data-seed-prebsc-1-s1.binance.org:8545/ ChainID: 97 Symbol: BNB Block Explorer URL: https://testnet.bscscan.com  # Mainnet Network Name: Binance Smart Chain New RPC URL: https://bsc-dataseed.binance.org/ ChainID: 56 Symbol: BNB Block Explorer URL: https://bscscan.com 
  • Get some BNB coin to deploy smart contract: https://testnet.binance.org/faucet-smart
  • Access: https://remix.ethereum.org and do the same with Ropsten ETH Token

Avalanche (AVAX) Chain Token

https://docs.avax.network/build/tutorials/smart-contracts/deploy-a-smart-contract-on-avalanche-using-remix-and-metamask

  • Open Metamask -> Custom RPC
# FUJI Testnet Settings Network Name: Avalanche FUJI C-Chain New RPC URL: https://api.avax-test.network/ext/bc/C/rpc ChainID: 0xa869 Symbol: AVAX Explorer: https://cchain.explorer.avax-test.network  # Avalanche Mainnet Settings Network Name: Avalanche Mainnet C-Chain New RPC URL: https://api.avax.network/ext/bc/C/rpc ChainID: 0xa86a Symbol: AVAX Explorer: https://cchain.explorer.avax.network/ 
  • AVAX address info:

AVAX tokens exist on the X-Chain, where they can be traded, on the P-Chain, where they can be provided as a stake when validating the Primary Network, and on the C-Chain, where they can be used in smart contracts or to pay for gas. In this tutorial, we’ll send AVAX tokens between the X-Chain and C-Chain.

  • Get some AVAX coin to deploy smart contract: https://faucet.avax-test.network/
- Copy ETH address generated by Metamask -> Now this address will be C-Chain AVAX address - Access https://wallet.avax.network/ -> Switch env to Fuji network - Import wallet with private key of above C-Chain AVAX address - Now you can see, we have 3 wallet address types with 3 address:      + Available (X) = 0 (X-fuji1hjfdc8hsqtfju27lzfn8zyztlrdr9220ucura6)     + Available (P) = 0 (P-fuji1hjfdc8hsqtfju27lzfn8zyztlrdr9220ucura6)     + Available (C) = 0 (0xfd0c67edd5e4ce03cd8397dc748b19b0a5c0f645 <- reused eth address in Metamask) - Access https://faucet.avax-test.network/ -> fill specific address to get test coin - You can move you coin from X-Chain to C-Chain and vice versa with 'Cross Chain' at https://wallet.avax.network/wallet/cross_chain  
  • Access: https://remix.ethereum.org and do the same with Ropsten ETH Token

Polkadot

  • Moonbase Alpha TestNet
Moonbase Alpha TestNet Network Name: Polkadot Moonbase Alpha New RPC URL: https://rpc.testnet.moonbeam.network ChainID: 1287 Symbol (Optional): DOT Explorer: https://moonbase-blockscout.testnet.moonbeam.network/ 

Upgrade contracts

change the contract code, while preserving the state, balance, and address

  • https://docs.openzeppelin.com/learn/upgrading-smart-contracts
  • https://docs.openzeppelin.com/upgrades-plugins/1.x/writing-upgradeable
  • https://docs.openzeppelin.com/upgrades-plugins/1.x/truffle-upgrades

Ref

Fork from: https://github.com/nhancv/smartcontracts-app

Remix online IDE https://remix.ethereum.org/#optimize=true&runs=200&evmVersion=null&version=soljson-v0.8.3+commit.8d00100c.js

Install

TRUFFLE CLI

https://www.trufflesuite.com/docs/truffle/quickstart

npm install truffle -g 

Setup local Blockchain

Option1: Install Ganache – UI local blockchain

  • Download here: https://www.trufflesuite.com/ganache
  • How to start blockchain server?
    Open Ganache ->
    • New workspace: If you want to save your network status to use later -> Add Project -> Point to truffle/smartcontracts/truffle-config.js -> Save
    • Quickstart: If you don’t care about network status, just need a blockchain server to test your app.

Option2: Install Ganache cli

  • Download here: https://github.com/trufflesuite/ganache-cli
npm install -g ganache-cli 
  • How to start blockchain server?
# Generate new account set everytime you start ganache-cli 

Build and Deploy Contract

* Note: remember start local blockchain first if you want to test on your local  # Node libs install npm i  # Prepare wallet (skip this step for local deployment) cp .env.example .env Copy MNEMONIC generated by Ganache ACCOUNTS and paste to MNEMONIC value in .env created previous step  # Compile only  truffle compile  # Or Compile and deploy contract to local test truffle migrate  # Fow specific network truffle migrate --network <network_name>  # Publish & Verify Contract truffle run verify {contract_class_name}@{contract_address} --network <network_name>  # Validate Check on Ganache in Blocks, Transactions, Contracts, Events, Logs, ... 

Create Testing Solidity token:

  • Install Metamask
  • The ETH wallets generated automatically

Ropsten ETH Token

  • Open Metamask -> Switch env to Ropsten Test Network
Network Name: Ropsten Test Network New RPC URL: https://ropsten.infura.io/v3/undefined Chain ID: 3 Currency Symbol (optional): ETH Block Explorer URL (optional): https://ropsten.etherscan.io 
  • Get some ETH coin to deploy smart contract: https://faucet.ropsten.be/
  • Access: https://remix.ethereum.org/#optimize=false&runs=200&evmVersion=null&version=soljson-v0.8.1+commit.df193b15.js
    • Create contracts/ERC20Token.sol
    • Fill ERC20Token.sol with source code at: ./truffle/smartcontracts/contracts/ERC20Token.sol
    • Modify ERC20Token.sol to your token info
    • Compile tab: Compile ERC20Token.sol
    • Deploy tab: Select Environment -> Injected Web3 -> Select Contract your contract class name -> Deploy

Binance Smart Chain BEP20 Token

https://academy.binance.com/en/articles/connecting-metamask-to-binance-smart-chain

  • Open Metamask -> Custom RPC
# Testnet Network Name: Binance Smart Chain - Testnet New RPC URL: https://data-seed-prebsc-1-s1.binance.org:8545/ ChainID: 97 Symbol: BNB Block Explorer URL: https://testnet.bscscan.com  # Mainnet Network Name: Binance Smart Chain New RPC URL: https://bsc-dataseed.binance.org/ ChainID: 56 Symbol: BNB Block Explorer URL: https://bscscan.com 
  • Get some BNB coin to deploy smart contract: https://testnet.binance.org/faucet-smart
  • Access: https://remix.ethereum.org and do the same with Ropsten ETH Token

Avalanche (AVAX) Chain Token

https://docs.avax.network/build/tutorials/smart-contracts/deploy-a-smart-contract-on-avalanche-using-remix-and-metamask

  • Open Metamask -> Custom RPC
# FUJI Testnet Settings Network Name: Avalanche FUJI C-Chain New RPC URL: https://api.avax-test.network/ext/bc/C/rpc ChainID: 0xa869 Symbol: AVAX Explorer: https://cchain.explorer.avax-test.network  # Avalanche Mainnet Settings Network Name: Avalanche Mainnet C-Chain New RPC URL: https://api.avax.network/ext/bc/C/rpc ChainID: 0xa86a Symbol: AVAX Explorer: https://cchain.explorer.avax.network/ 
  • AVAX address info:

AVAX tokens exist on the X-Chain, where they can be traded, on the P-Chain, where they can be provided as a stake when validating the Primary Network, and on the C-Chain, where they can be used in smart contracts or to pay for gas. In this tutorial, we’ll send AVAX tokens between the X-Chain and C-Chain.

  • Get some AVAX coin to deploy smart contract: https://faucet.avax-test.network/
- Copy ETH address generated by Metamask -> Now this address will be C-Chain AVAX address - Access https://wallet.avax.network/ -> Switch env to Fuji network - Import wallet with private key of above C-Chain AVAX address - Now you can see, we have 3 wallet address types with 3 address:      + Available (X) = 0 (X-fuji1hjfdc8hsqtfju27lzfn8zyztlrdr9220ucura6)     + Available (P) = 0 (P-fuji1hjfdc8hsqtfju27lzfn8zyztlrdr9220ucura6)     + Available (C) = 0 (0xfd0c67edd5e4ce03cd8397dc748b19b0a5c0f645 <- reused eth address in Metamask) - Access https://faucet.avax-test.network/ -> fill specific address to get test coin - You can move you coin from X-Chain to C-Chain and vice versa with 'Cross Chain' at https://wallet.avax.network/wallet/cross_chain  
  • Access: https://remix.ethereum.org and do the same with Ropsten ETH Token

Polkadot

  • Moonbase Alpha TestNet
Moonbase Alpha TestNet Network Name: Polkadot Moonbase Alpha New RPC URL: https://rpc.testnet.moonbeam.network ChainID: 1287 Symbol (Optional): DOT Explorer: https://moonbase-blockscout.testnet.moonbeam.network/ 

Upgrade contracts

change the contract code, while preserving the state, balance, and address

  • https://docs.openzeppelin.com/learn/upgrading-smart-contracts
  • https://docs.openzeppelin.com/upgrades-plugins/1.x/writing-upgradeable
  • https://docs.openzeppelin.com/upgrades-plugins/1.x/truffle-upgrades

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www.interchains.cc

https://www.interchains.cc/22300.html

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