1) BlockScout is the official blockchain explorer for the xDai Chain. With this full-featured, open-source explorer you can view transactions, accounts & balances, access data via the API, and read and verify smart contracts.
2) AnyBlock Analytics Explorer is convenient for exploring recent transactions and blocks and locating common information quickly.
Main RPC is a load balancer with 4 nodes, health checks, and failover.
🚀 QuikNode also supports xDai. Devs can get their own custom endpoint for DApps or other needs. https://blog.quiknode.io/xdai-network-is-live-on-quiknode/
⚓ Ankr offers API endpoint access available with a free tier up to 100K requests/day. Additional paid tiers are available for developers. https://www.ankr.com/
⏹ GetBlock.io provides fast and easy API connection services to an xDai archive node. Both free and paid levels available. https://getblock.io/nodes/stake
🌎 AnyBlock Analytics provides a JSON-RPC professional service for users. As xDai validators, they have a deep understanding of the network as well as the broader Ethereum ecosystem. https://www.anyblockanalytics.com/json-rpc
Eth Wiki: https://eth.wiki/json-rpc/API
Gas Price Oracle: https://blockscout.com/xdai/mainnet/api/v1/gas-price-oracle
POSDAO consensus is implemented in Solidity. Proxy contracts should be read for values such as Random Numbers generated by the protocol.
There are two bridge implementations connecting xDai and the Ethereum Mainnet.
****xDai Bridge: ERC20-to-Native TokenBridge implementation, used for transferring Dai <-> xDai between Ethereum and the xDai chain.
****ETH-xDai Arbitrary Message Bridge: AMB between Ethereum and xDai for data, token and message transfers. Includes the Ominibridge application for transfer of any ERC20 cross-chain.
xDai Bridge UI at https://bridge.xdaichain.com/
Interaction using method calls for smart contracts https://docs.tokenbridge.net/xdai-bridge/how-to-use-xdai-bridge-without-ui
Bridge UI is built-in into AlphaWallet, BurnerWallet, BurnerFactory and other applications.
Biconomy allows for gasless transactions and improved DApp UX.
TheGraph supports xDai data indexing, querying and display.
CurveGrid MultiBaas provides smart contract deployment, interaction and updating capabilities through a web UI as well as a comprehensive REST API.
3Box: Externally Owned Account (EOA) addresses are the same on xDai as they are on other EVM networks, so no changes are needed to implement 3box functionality.
BlockNative supports real-time notification & transaction monitoring and mempool streaming with API and SDK tools.
Chainlink: xDai Price Feeds integration.
Tenderly dashboard supports xDai transaction inspection - smart contracts can also be pushed to the dashboard for real-time monitoring.
Chainbeat provides monitoring and analytics tools for DApp developers.
Dappquery analytics dashboard, customizable visualizations, smart contract alerts and scalable GraphQL API.
https://blockscout.com/xdai/mainnet/faucet An xDai faucet to quickly get .01 xDai and start using the chain right away!
Test Token Faucets
Token faucet allows you to easily create ERC20 FAU tokens for testing purposes.
Weenus ERC20 is also available to use for testing purposes.
General Migration Guide: A fun and easy xDai migration guide from DAOHaus: https://medium.com/daohaus-club/daohaus-xdai-dapp-migration-83dca1fc590a
GasRelay tutorial by Portis. With a few lines of code, gas fees are shifted to DApp owners rather than users, creating an intuitive user experience. https://docs.portis.io/#/gas-relay
WebSockets Endpoint (can be useful to setup BlockScout for xDai) wss://dai-trace-ws.blockscout.com/ws
Archive Fullnode Endpoint (Useful for setting up BlockScout for xDai) https://dai-trace-ws.blockscout.com
Chain spec files and known bootnodes of the xDai network https://github.com/poanetwork/poa-chain-spec/tree/dai
Netstats, an overview of xDai Chain nodes http://dai-netstat.poa.network
Gnosis Safe on xDai.