Blockchain Awesome

• Wallet

  • MetaMask
  • WalletConnect
  • Coinbase
  • ImToken
  • TrustWallet

• https://coinmetrics.io/

• https://coinmarketcap.com/

• https://dune.com/

• https://geoweb.network/

  • Open Geospatial Information Network
  • https://geoweb.land/

• https://ceramic.network/

  • The Open Data Network
  • ceramicstudio/self.id

• https://ramp.network/

  • Empower users to buy & sell crypto inside your app
  • Fiat <-> crypto on-ramp

• https://ycharts.com/indicators/ethereum_average_gas_price

• Ethereum Gas Tracker

• Block Explorer and Analytics Platform

  • https://etherscan.io/

Ethereum Awesome

• https://goerli.etherscan.io/
• https://sepolia.etherscan.io

Swap Fee

Reward	Swap	Fee
0.3%	Uniswap v1
0.3%	Uniswap v2	0.05%
0.05%	Uniswap v3 very stablecoin pair	0.05%
0.05%	Uniswap v3 stablecoin pair	0.05%
0.30%	Uniswap v3 most	0.05%
1.00%	Uniswap v3 low trade	0.05%
9%-14% APR	Polygon Matic Staking - ETH->Matic

Swap

• Uniswap
  • Network: Ethereum mainnet, Optimism, Arbitrum, Polygon
• PartySwap
  • Network: Avalanche
  • Token: PARTY
• PolkaSwap
• QuickSwap
• Sushiswap
• Simpleswap
• AAVE
  • decentralised non-custodial liquidity market protocol
  • https://docs.google.com/spreadsheets/d/1TY_ai7vapncY66HUdkFp8G8W7owIQOS2lqTsdvqm6PY/edit#gid=1150575472

Contracts

• ethereum/solidity
• ConsenSys/smart-contract-best-practices
  • 固化 vs 可升级
  • 一体化 vs 模块化
  • 重复 vs 可重用
• ConsenSys/ethereum-developer-tools-list
• runtimeverification/verified-smart-contracts
• https://github.com/yam-finance/yam-protocol/blob/master/contracts
• https://docs.fractional.art/fractional/smart-contract-breakdown/token-vault
  • https://github.com/fractional-company/contracts
  • Vault
• https://docs.unic.ly/tutorials/how-to-fractionalize-your-nfts
  • https://github.com/uniclyNFT/unicly-core/tree/main/contracts
  • NFT 拆分
• https://github.com/ethereum/EIPs/issues/4674
  • NFT 拆分
• https://github.com/sablierhq/sablier/tree/develop/packages/protocol/contracts
• https://github.com/safe-global
  • secure management of blockchain assets
• superfluid-finance/protocol-monorepo
• trufflesuite/truffle
  • MIT, TS
  • Ethereum contract abstraction, for Node and the browser
• 应用
  • Geo-Web-Project/core-contracts
  • https://github.com/decentraland/land/tree/master/contracts
• solidstate-network/solidstate-solidity
  • Upgradeable-first Solidity smart contract development library

Dev

• dev env
  • Hardhat
  • Ganache
  • Truffle
  • Foundry
• explorer
  • blockscout/blockscout
  • wmitsuda/otterscan
  • tryethernal/ethernal
  • bitquery/explorer
    • MIT, Ruby
• js client
  • ethers.js
    • 针对 provider 有默认 apikey - https://docs.ethers.io/v5/api-keys/
  • ChainSafe/web3.js
  • wevm/viem
    • MIT, TS
    • npm:viem
    • https://viem.sh/
    • TypeScript Interface for Ethereum
  • wevm/wagmi
    • MIT, TS
    • npm:wagmi
    • https://wagmi.sh/
    • React Hooks for Ethereum
  • @ethereumjs
  • @ethersproject
  • @nomiclabs
  • fortmatic
  • web3react
  • window.ethereum
    • web3-compatible browsers - MetaMask
  • https://eips.ethereum.org/EIPS/eip-1474#error-codes
  • WalletConnect/walletconnect-monorepo
  • window.web3 - 废弃
• dethcrypto/TypeChain
  • TypeScript bindings for Ethereum smart contracts
• connect
  • onboard.js
  • Web3Modal/web3modal
  • safe-global/safe-apps-sdk
    • multi-signature contract wallet
    • https://dev.gnosis-safe.io/
    • https://docs.gnosis-safe.io/introduction/statistics-and-usage
    • safe-apps-web3modal
• React
  • TrueFiEng/useDApp
  • NoahZinsmeister/web3-react
  • rainbow-me/rainbowkit
    • connect a wallet
  • wagmi-dev/wagmi
    • React Hooks for Ethereum
• API/Blockchain API Provider/Proxy
  • graphprotocol/graph-node
    • Apache-2.0, MIT, Rust
    • indexes data from blockchains such as Ethereum and serves it over GraphQL
  • llamanodes/web3-proxy
    • GPLv3, Rust
  • https://eth.wiki/json-rpc/API
  • https://stripe.com/zh-cn-hk/use-cases/crypto
  • https://api.coingecko.com/api/v3/simple/price
  • https://api.etherscan.io/api
  • https://sentinel.matic.network/api/v2/validators/metadata/totalStake
  • infura.io
    • 10w/day
  • AWS
  • Moralis
• Misc
  • makerdao/multicall
  • makerdao/awesome-makerdao
• icon/logo
  • tylim88/Crypto-Symbol
    • Name <-> Symbol
  • coinwink/cryptocurrency-logos
    • coinwink/crypto-logos-cc
      • https://cryptologos.cc/
  • spothq/cryptocurrency-icons
    • https://cryptoicons.co/
  • ConsenSysMesh/rimble-icons
• 商业
  • https://web3.storage/
  • https://www.alchemy.com/
    • https://github.com/alchemyplatform
    • Web3 Developer Platform

import { MetaMaskInpageProvider } from '@metamask/providers';

declare global {
  interface Window {
    ethereum: MetaMaskInpageProvider;
  }
}

web3js vs ethersjs

• ethersjs
  • MIT
  • modules - Provider, Contract, utils, Wallet
• web3js
  • LGPL
  • window.web3 - metamask 已经不在注入 web3 ^
    • 使用 window.ethereum
  • modules - eth, bzz, shh, utils, *.net

汇率

curl 'https://min-api.cryptocompare.com/data/price?fsym=ETH&tsyms=BTC,USD,EUR'
curl 'https://api.coinbase.com/v2/exchange-rates?currency=ETH'

curl 'https://api.etherscan.io/api?module=stats&action=ethprice&apikey=YourApiKeyToken'

---

• https://www.coingecko.com/api/docs/v3#/simple/get_simple_price
• https://coinmarketcap.com/api/documentation/v1/#operation/getV1ToolsPriceconversion
• https://www.cryptocompare.com/api/
• https://developers.coinbase.com/api/v2#exchange-rates
• https://api3.org/apis/ExchangeRate-API/Currency+Conversion+API
• https://www.app.unic.ly/#/discover

Testnets

ChainList

Hex	Decimal	Symbol	Network	Proof	RPC	Explorer
0x3	3	ROP	Ropsten	PoW/ethash	https://ropsten.infura.io/v3/${INFURA_API_KEY}
0x4	4	RIN	Rinkeby	PoA/Clique		https://www.rinkeby.io/
0x5	5	GOR	Goerli	PoA/Clique
0x2a	42	KOV	Kovan	PoA/authority round
	43113	AVAX	FUJI		https://api.avax-test.network/ext/bc/C/rpc	https://testnet.snowtrace.io/
	11155111	ETH	Sepolia		https://sepolia.dev/	https://sepolia.etherscan.io/
			Holesky

• rETH - rinkeby ETH
• Faucet
  • https://faucetlink.to/
  • https://www.infura.io/faucet
• Avalanche C-Chain

tip

• 可以在 https://app.compound.finance 换取其他币，方便测试多种币。
• etherscan.io 支持 ropsten, rinkeby, kovan, goerli

• Goerli - 2019-2022 +1 LTS
• Sepolia - 2021-2025 +1 LTS
• Holešky - 2023-2027 +1 LTS
  • https://github.com/eth-clients/holesky

Ropsten

• Ropsten 接近 mainnet
• ETH - https://faucet.metamask.io/
• LINK - https://ropsten.chain.link/
• Exploere
  • https://blockexplorer.one/ethereum/ropsten
  • https://ropsten.etherscan.io/

Rinkeby

• ethereum/EIPs#225
• https://www.rinkeby.io/
• https://rinkebyfaucet.com/ - 0.1 ETH/24h/IP
• https://faucet.rinkeby.io/ - 需要社交验证

Goerli

• https://stats.goerli.net/
• goerli/testnet

---

• https://ethereum.stackexchange.com/a/30072

网络

ChainList

Hex	Decimal	Symbol	Network	RPC	Explorer
0x1	1	ETH	Ethereum Main Network (Mainnet)
0x38	56	BNB	Smart Chain	https://bsc-dataseed.binance.org/	https://bscscan.com
	137	MATIC	Polygon	https://polygon-rpc.com	https://polygonscan.com/

• https://app.compound.finance/ - 换币
• palm mainnet, testnet
• aurora mainnet, testnet
• near mainnet, testnet
• polygon mainnet, mumbai
  • https://polygon.technology/
• arbitrum mainnet, rinkeby
• optimisim mainnet, kovan
  • Layer 2 Optimistic Rollup network
  • Fraud proof
• Zero Knowlogy
  • Validity proof
• https://ethereum.org/en/developers/docs/networks/
• Polygon
  • https://polygon-rpc.com
  • https://rpc-mainnet.maticvigil.com
  • https://rpc-mainnet.matic.network
  • https://rpc-mainnet.matic.quiknode.pro
• DAO
  • blockchainsllc/DAO
    • oraclize.sol
  • Platform
    • https://otherside.xyz/explore
    • https://daohaus.club/
    • https://www.metacat.world/
    • https://enterdao.xyz/
• opensea
  • https://docs.opensea.io/docs/developer-tutorials
  • https://testnets.opensea.io/
    • Rinkeby
    • https://testnets.opensea.io/assets/<asset_contract_address>/<token_id>
    • https://testnets-api.opensea.io/api/v1/asset/<your_contract_address>/<token_id>/?force_update=true
  • Project Wyvern Exchange 0x7be8076f4ea4a4ad08075c2508e481d6c946d12b
• NFT
  • trader-xyz/nft-swap-sdk
  • https://nft.storage/
  • https://www.pinata.cloud/
  • https://www.arweave.org/
  • Content Addressable aRchives https://ipld.io/specs/transport/car/carv1/
  • https://shapeshift.com/
  • https://fractional.art/
• liquidity
  • https://www.0x.org/docs/api
  • https://matcha.xyz/
• https://defisaver.com/
• https://rari.capital/
• https://prysm.xyz/
• https://zapper.fi/
• https://www.pokt.network/

rpc

• https://cloudflare-ipfs.com/
  • https://developers.cloudflare.com/web3/ipfs-gateway/
• https://cloudflare-eth.com
  • https://developers.cloudflare.com/web3/ethereum-gateway/
• ethereum/execution-apis

explorer

• https://etherscan.io/
• https://blockexplorer.one/
• https://blockscan.com/
• https://bloxy.info/

apis

• https://blocknative.com

testnets

• https://infura.io/
• https://www.alchemyapi.io/

rpc

• net_version -> chainId
• net_listening:boolean
• 参考
  • http://cw.hubwiz.com/card/c/ethereum-json-rpc-api/
  • metamask api-playground

curl -X POST --data '{"jsonrpc":"2.0","method":"net_version","params":[],"id":67}'

Token

TokenList

主要 ECR-20 币

Token	Name	Primary Network
ETH	以太坊
MATIC		ERC20, Polygon
USDC	USD Coin	Centre
USDT	泰达币,Tether	TRC20, ERC20, OKC, Polygon, Solana
DOGE	狗狗币
ZRX	0x Protocol Token
DAI	Dai Stablecoin

• BSC
• 稳定币 - USDT, USDC, DAI, Diem
• 参考
  • https://tokenlists.org/ - Ethereum token list
    • Uniswap/token-lists
    • https://uniswap.org/tokenlist.schema.json
  • Cryptocurrency

Token	Name	Network
ADA
ATOM
AVAX
AXS
BCH	比特币现金
BTC	比特币
CRV
DOME
DOT
EOS	柚子币
FIL
FTM
GALA
ICP
LINK	Chialink
LOOKS
LTC	莱特币
LUNA		Terra
MANA
NFT
OKB	Okx
PEOPLE
SAND
SHIB	Shiba Inu
SLP
SOL
SOS
TRX	波场币
UNI
USDK
XRP	瑞波币

Trade

• https://cbridge.celer.network/
• https://www.okx.com/

Miner

• xmrig/xmrig

参考

• NFT
  • https://opensea.io/
• DAO
  • https://app.daohaus.club/

服务

• 33cn/chain33
  • 高度模块化, 遵循 KISS 原则的区块链开发框架
• blkchain/pg_blkchain
  • PostgreSQL Blockchain Extension

Read

• The Complete Guide to Full Stack Ethereum Development
• 元宇宙的运行之“DAO”
• Web3 Tutorial: write upgradeable smart contract (proxy) using OpenZeppelin
• defi-vs-goliath
• Condition-Orientated Programming
• From “What is Blockchain?” to building a blockchain in less than an hour
• Building Blockchain in Go. Part 1: Basic Prototype
• How to build a blockchain from scratch with Go

Web3

Web2	Web3
AWS S3	Filecoin
Github	Radicle
Paypal	Wallets
Zoom	Huddle
Spotify	Audius
Upwork	Braintrust
Twitter	Lens Protocol
MongoDB	Ceramic

Service

• https://www.hyperledger.org/
• https://github.com/corda/corda
  • Corda is an open source blockchain project, designed for business from the start. Only Corda allows you to build interoperable blockchain networks that transact in strict privacy. Corda's smart contract technology allows businesses to transact directly, with value. https://www.corda.net
• Apache Milagro
  • Core security infrastructure for decentralized networks and distributed systems
  • https://milagro.apache.org/users.html
• https://101blockchains.com/blockchain-open-source/

Math

• Constant Product AMM Math https://youtu.be/QNPyFs8Wybk