eth_getBlockByHash - Astar RPC Method
Retrieve complete block data by block hash on Astar. Essential for multi-chain dApp developers, DeFi builders, and teams leveraging Polkadot + Ethereum ecosystems building on Polkadot's leading dApp hub supporting EVM, WASM, and upcoming PolkaVM environments.
Returns information about a block by hash on Astar.
Why Astar? Build on Polkadot's leading dApp hub supporting EVM, WASM, and upcoming PolkaVM environments with EVM + WASM + PolkaVM support, Build2Earn developer rewards, dApp Staking, and Soneium cross-layer integration.
Use Cases
The eth_getBlockByHash method is essential for:
- Block verification - Verify block data using its unique hash
- Chain reorganization handling - Track blocks during reorgs
- Cross-chain bridges - Verify block finality for cross-chain DeFi, multi-VM smart contracts, and XCM-enabled interoperability with Ethereum and Cosmos
- Deterministic queries - Get consistent block data regardless of chain state
Code Examples
Error Handling
| Error Code | Message | Description |
|---|---|---|
| -32602 | Invalid params | Invalid block hash format |
| -32000 | Block not found | Block with this hash does not exist |
Related Methods
eth_getBlockByNumber- Get block by numbereth_blockNumber- Get latest block number
eth_getBlockByNumber
Retrieve complete block data by block number on Astar. Perfect for multi-chain dApp developers, DeFi builders, and teams leveraging Polkadot + Ethereum ecosystems building on Polkadot's leading dApp hub supporting EVM, WASM, and upcoming PolkaVM environments.
eth_getBlockReceipts
Return every transaction receipt in a block on Astar. Useful for indexers, analytics pipelines, and event backfills across cross-chain DeFi, multi-VM smart contracts, and XCM-enabled interoperability with Ethereum and Cosmos.