chain_getBlock - Hydration RPC Method
Retrieve block data by hash on Hydration. Essential for accessing block headers and extrinsics on Polkadot's leading DEX with $200M+ TVL, Omnipool AMM, and native HOLLAR stablecoin.
Hydration RPC endpoint: endpoint URLs, plans and pricing.
Retrieves complete block information from Hydration, including the block header, extrinsics, and justifications.
Why Hydration? Build on Polkadot's leading DEX with $200M+ TVL, Omnipool AMM, and native HOLLAR stablecoin with Omnipool with reduced slippage, permissioned listings, 3M DOT DAO allocation, and 200%+ APR farm yields.
Use Cases
The chain_getBlock method is essential for:
- Block explorers - Display complete block information
- Chain analysis - Analyze block production patterns
- Transaction verification - Confirm extrinsic inclusion for single-sided liquidity provision, cross-chain trading (SOL, KSM, tBTC), and HOLLAR decentralized stablecoin
- Data indexing - Build historical blockchain databases
Best Practices
- Cache block data by hash -- blocks are immutable once finalized on Substrate chains
- Use
chain_getBlockHashfirst to resolve block number to hash before calling this method - Handle
nullresults gracefully for non-existent blocks - Combine with
chain_getFinalizedHeadfor consensus-safe block retrieval
{
"jsonrpc": "2.0",
"method": "chain_getBlock",
"params": ["0x91b171bb158e2d3848fa23a9f1c25182fb8e20313b2c1eb49219da7a70ce90c3"],
"id": 1
}Code Examples
Related Methods
chain_getBlockHash- Get block hash by numberchain_getHeader- Get block header onlychain_getFinalizedHead- Get finalized block hash
Hydration Liquidity Parachain RPC Guide
Production-ready JSON-RPC guide for Hydration, Polkadot's unified liquidity parachain. Learn verified endpoints, network specs, integration patterns, and troubleshooting tips for HDX builders.
chain_getBlockHash
Get block hash by number on Hydration. Essential for converting block numbers to hashes, historical queries, and blockchain navigation on Polkadot's leading DEX with $200M+ TVL, Omnipool AMM, and native HOLLAR stablecoin.