About Gnosis Chain (GC)
For users
For Stakers
For developers
For validators
Contact & Media Info
Developer Resources & Tools
General Information and Links
General Information
Block Size
Block Speed
Gas price
Patchset
Native token
Network ID
30M Gas
5 sec
~1.22 GWei at baseline. Can rise with high usage (1559)
London
xDai
100
Blockchain Explorer
1) BlockScout is the official blockchain explorer for the Gnosis 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.
JSON RPC endpoints
Main RPC is a load balancer with 4 nodes, health checks, and failover.
Resource
URL
JSON RPC endpoint
WebSockets WSS endpoint
wss://rpc.xdaichain.com/wss
(alternative) wss://xdai.poanetwork.dev/wss
Additional resources to connect to Gnosis Chain
Resource
URL
WebSockets WS (non-secure)
ws://xdai.poanetwork.dev:8546
Network ID (Decimal, Hexadecimal)
100
0x64
🚀 QuikNode supports GC. 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 a GC archive node. Both free and paid levels available. https://getblock.io/nodes/stake
⏹
AnyBlock Analytics provides a JSON-RPC professional service for users. As GC validators, they have a deep understanding of the network as well as the broader Ethereum ecosystem. https://www.anyblockanalytics.com/json-rpc
🌎
Pocket decentralized infrastructure, 1-click endpoints and monitoring. https://www.portal.pokt.network. Learn more about their multi-chain infrastructure.
⏩
JSON-RPC Method Info
- BlockScout info
If using
eth_getLogsto pull logs frequently WebSockets are recommended to push new logs as available.Gas Price Oracle
POSDAO Contracts
POSDAO consensus is implemented in Solidity. Proxy contracts should be read for values such as Random Numbers generated by the protocol.
TokenBridge
There are two bridge implementations connecting GC and the Ethereum Mainnet.
****xDai Bridge: ERC20-to-Native TokenBridge implementation, used for transferring Dai <-> xDai between Ethereum and the xDai chain.
****ETH-GC 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 Access
- 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.
OmniBridge Access
- Omnibridge is located at https://omni.xdaichain.com/. More information including method calls here.
Compatible Testnets
DApp Management & Developer Tools
See the dropdown menu under Developer Resources and Tools for tutorials related to many of these tools.
- 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 GC 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.
- Remix IDE: It's easy to deploy to GC with Remix, simply choose injected web3 and add the GC custom RPC to your metamask.
- OpenZeppelin Defender: Manage smart contract administration including access controls, upgrades, and pausing. Works with Gnosis Safe Multisig.
- Brownie: Smart Contract Development tool suite. For a video overview of Brownie Features, see this tutorial series by the Curve Finance team.
Dashboards & Monitoring
- Dune Analytics: Dune supports data queries and custom dashboards. Visualize and compare data between contracts and chains (GC and Ethereum support). Existing Dashboards:
- Tenderly dashboard supports transaction inspection - smart contracts can also be pushed to the dashboard for real-time monitoring.
- Dappquery analytics dashboard, customizable visualizations, smart contract alerts and scalable GraphQL API.
Token Faucets
xDai Faucets for transactions
Test Token Faucets
Tenderly Dashboard Gas Profiler example
Additional Resources
- General Migration Guide: Published prior to the rebrand, this is 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
- Archive Fullnode Endpoint (Useful for setting up BlockScout for GC) https://xdai-archive.blockscout.com
- Chain spec files and known bootnodes of the GC network https://github.com/poanetwork/poa-chain-spec/tree/dai
- Anyblock Index (aka http://eth.events), so you can query it via the Elasticsearch API or search in PostgreSQL: https://account.anyblock.tools/status/
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