Optimism node API
web3_sha3 | Optimism
APIs introduction
Ethereum node API
- Getting started | Ethereum
- Enable Debug & Trace APIs for your Ethereum Node
- Ethereum API Postman Collection
- Blocks info | Ethereum
- Transactions info | Ethereum
- Executing transactions | Ethereum
- Debug and Trace | Ethereum
- Chain info | Ethereum
- Gas data | Ethereum
- Accounts info | Ethereum
- Logs & events | Ethereum
- Client information | Ethereum
- Filter handling | Ethereum
- Subscriptions | Ethereum
Ethereum Beacon Chain API
- Getting tarted | Beacon Chain
- Beacon Chain configuration info
- Beacon Chain events
- Beacon Chain validators info
- Beacon Chain state
Polygon node API
- Getting started | Polygon
- Blocks Info | Polygon
- Transactions info | Polygon
- Executing transactions | Polygon
- Debug & Trace | Polygon
- Chain info | Polygon
- Gas data | Polygon
- Accounts info | Polygon
- Logs & events | Polygon
- Filter handling | Polygon
- Client information | Polygon
- Subscriptions | Polygon
BNB node API
- Getting started | BNB Chain
- Endpoints
Base node API
- Getting started | Base
- Endpoints
Avalanche node API
- Getting started | Avalanche
- Blocks Info | Avalanche
- Transactions info | Avalanche
- Executing transactions | Avalanche
- Debug & Trace | Avalanche
- Chain info | Avalanche
- Gas data | Avalanche
- Accounts info | Avalanche
- Logs & events | Avalanche
- Filter handling | Avalanche
- Client information | Avalanche
- Subscriptions | Avalanche
TON node API
- Getting started | TON
- Getting started | TON
- GETgetAddressInformation | TON v2
- GETgetExtendedAddressInformation | TON v2
- GETgetWalletInformation | TON v2
- GETgetTransactions | TON v2
- GETgetAddressBalance | TON v2
- GETgetAddressState | TON v2
- GETpackAddress | TON v2
- GETunpackAddress | TON v2
- GETgetTokenData | TON v2
- GETdetectAddress | TON v2
- GETgetMasterchainInfo | TON v2
- GETgetMasterchainBlockSignatures | TON v2
- GETgetShardBlockProof | TON v2
- GETgetConsensusBlock | TON v2
- GETlookupBlock | TON v2
- GETshards | TON v2
- GETgetBlockTransactions | TON v2
- GETgetBlockTransactionsExt | TON v2
- GETgetBlockHeader | TON v2
- GETtryLocateTx | TON v2
- GETtryLocateResultTx | TON v2
- GETtryLocateSourceTx | TON v2
- GETgetConfigParam | TON v2
- POSTrunGetMethod | TON v2
- GETmasterchainInfo | TON v3
- GETblocks | TON v3
- GETmasterchainBlockShardState | TON v3
- GETaddressBook | TON v3
- GETmasterchainBlockShards | TON v3
- GETtransactions | TON v3
- GETtransactionsByMasterchainBlock | TON v3
- GETtransactionsByMessage | TON v3
- GETadjacentTransactions | TON v3
- GETmessages | TON v3
- GETnft/collections | TON v3
- GETnft/items | TON v3
- GETnft/transfers | TON v3
- GETjetton/masters | TON v3
- GETjetton/wallets | TON v3
- GETjetton/transfers | TON v3
- GETjetton/burns | TON v3
- POSTrunGetMethod | TON v3
- POSTestimateFee | TON v3
- GETaccount | TON v3
- GETwallet | TON v3
Arbitrum node API
- Getting Started | Arbitrum
- Blocks info | Arbitrum
- Transactions info | Arbitrum
- Executing transactions | Arbitrum
- Debug & Trace | Arbitrum
- Chain info | Arbitrum
- Gas data | Arbitrum
- Accounts info | Arbitrum
- Logs & events | Arbitrum
- Filter handling | Arbitrum
- Client information | Arbitrum
- Subscriptions | Arbitrum
Zksync node API
- Getting started | ZKsync
- Getting started | ZKsync
- POSTzks_L1ChainId | zkSync Era
- POSTzks_estimateFee | zkSync Era
- POSTzks_estimateGasL1ToL2 | zkSync Era
- POSTzks_getAllAccountBalances | zkSync Era
- POSTzks_getBlockDetails | zkSync Era
- POSTzks_getBridgeContracts | zkSync Era
- POSTzks_getBytecodeByHash | zkSync Era
- POSTzks_getL1BatchBlockRange | zkSync Era
- POSTzks_getL1BatchDetails | zkSync Era
- POSTzks_getL2ToL1LogProof | zkSync Era
- POSTzks_getMainContract | zkSync Era
- POSTzks_getRawBlockTransactions | zkSync Era
- POSTzks_getTestnetPaymaster | zkSync Era
- POSTzks_getTransactionDetails | zkSync Era
- POSTzks_L1BatchNumber | zkSync Era
Polygon zkEVM node API
- Getting started
- zkEVM methods | Polygon zkEVM
- POSTeth_blockNumber | zkEVM
- POSTeth_getBlockByNumber | zkEVM
- POSTeth_getBlockByHash | zkEVM
- POSTeth_getBlockTransactionCountByNumber | zkEVM
- POSTeth_getBlockTransactionCountByHash | zkEVM
- POSTeth_newBlockFilter | zkEVM
- POSTeth_getTransactionByHash | zkEVM
- POSTeth_getTransactionReceipt | zkEVM
- POSTeth_getTransactionByBlockNumberAndIndex | zkEVM
- POSTeth_getTransactionByBlockHashAndIndex | zkEVM
- POSTeth_newPendingTransactionFilter | zkEVM
- POSTeth_call | zkEVM
- POSTeth_sendRawTransaction | zkEVM
- POSTeth_getBalance | zkEVM
- POSTeth_getCode | zkEVM
- POSTeth_getStorageAt | zkEVM
- POSTeth_getTransactionCount | zkEVM
- POSTeth_chainId | zkEVM
- POSTeth_syncing | zkEVM
- POSTweb3_clientVersion | zkEVM
- POSTeth_estimateGas | zkEVM
- POSTeth_gasPrice | zkEVM
- POSTeth_getLogs | zkEVM
- POSTeth_newFilter | zkEVM
- POSTeth_getFilterChanges | zkEVM
- POSTeth_uninstallFilter | zkEVM
Optimism node API
- Getting started | Optimism
- POSTeth_blockNumber | Optimism
- POSTeth_getBlockByHash | Optimism
- POSTeth_getBlockByNumber | Optimism
- POSTeth_getBlockTransactionCountByHash | Optimism
- POSTeth_getBlockTransactionCountByNumber | Optimism
- POSTeth_getUncleCountByBlockHash | Optimism
- POSTeth_getUncleCountByBlockNumber | Optimism
- POSTeth_getBlockReceipts | Optimism
- POSTeth_chainId | Optimism
- POSTeth_syncing | Optimism
- POSTeth_call | Optimism
- POSTeth_estimateGas | Optimism
- POSTeth_createAccessList | Optimism
- POSTeth_gasPrice | Optimism
- POSTeth_feeHistory | Optimism
- POSTeth_newFilter | Optimism
- POSTeth_newBlockFilter | Optimism
- POSTeth_uninstallFilter | Optimism
- POSTeth_getFilterChanges | Optimism
- POSTeth_getFilterLogs | Optimism
- POSTeth_getLogs | Optimism
- POSTeth_getBalance | Optimism
- POSTeth_getStorageAt | Optimism
- POSTeth_getTransactionCount | Optimism
- POSTeth_getCode | Optimism
- POSTeth_getProof | Optimism
- POSTeth_getTransactionByHash | Optimism
- POSTeth_getRawTransactionByHash | Optimism
- POSTeth_getTransactionByBlockHashAndIndex | Optimism
- POSTeth_getRawTransactionByBlockHashAndIndex | Optimism
- POSTeth_getTransactionByBlockNumberAndIndex | Optimism
- POSTeth_getRawTransactionByBlockNumberAndIndex | Optimism
- POSTeth_getTransactionReceipt | Optimism
- eth_subscribe newHeads | Optimism
- eth_subscribe logs | Optimism
- eth_unsubscribe | Optimism
- POSTeth_maxPriorityFeePerGas | Optimism
- POSTeth_sendRawTransaction | Optimism
- POSTweb3_clientVersion | Optimism
- POSTweb3_sha3 | Optimism
- POSTnet_listening | Optimism
- POSTeth_callMany | Optimism
- POSTdebug_getModifiedAccountsByNumber | Optimism
- POSTdebug_getModifiedAccountsByHash | Optimism
- POSTdebug_storageRangeAt | Optimism
- POSTdebug_traceBlockByHash | Optimism
- POSTdebug_traceBlockByNumber | Optimism
- POSTdebug_traceTransaction | Optimism
- POSTdebug_traceCall | Optimism
- POSTdebug_traceCallMany | Optimism
Aurora node API
- Getting started | Aurora
- POSTeth_blockNumber | Aurora
- POSTeth_getBlockByNumber | Aurora
- POSTeth_getBlockByHash | Aurora
- POSTeth_getBlockTransactionCountByNumber | Aurora
- POSTeth_getBlockTransactionCountByHash | Aurora
- POSTeth_newBlockFilter | Aurora
- POSTeth_getTransactionByHash | Aurora
- POSTeth_getTransactionReceipt | Aurora
- POSTeth_getTransactionByBlockNumberAndIndex | Aurora
- POSTeth_getTransactionByBlockHashAndIndex | Aurora
- POSTeth_newPendingTransactionFilter | Aurora
- POSTeth_call | Aurora
- POSTeth_sendRawTransaction | Aurora
- POSTeth_getBalance | Aurora
- POSTeth_getCode | Aurora
- POSTeth_getStorageAt | Aurora
- POSTeth_getTransactionCount | Aurora
- POSTeth_chainId | Aurora
- POSTeth_syncing | Aurora
- POSTweb3_clientVersion | Aurora
- POSTnet_listening | Aurora
- POSTnet_peerCount | Aurora
- POSTeth_estimateGas | Aurora
- POSTeth_gasPrice | Aurora
- POSTeth_getLogs | Aurora
- POSTeth_newFilter | Aurora
- POSTeth_getFilterChanges | Aurora
- POSTeth_uninstallFilter | Aurora
Solana node API
- Getting started | Solana
- POSTgetAccountInfo | Solana
- POSTgetBalance | Solana
- POSTgetBlockHeight | Solana
- POSTgetBlock | Solana
- POSTgetBlockProduction | Solana
- POSTgetBlockCommitment | Solana
- POSTgetBlocks | Solana
- POSTgetBlocksWithLimit | Solana
- POSTgetBlockTime | Solana
- POSTgetClusterNodes | Solana
- POSTgetEpochInfo | Solana
- POSTgetEpochSchedule | Solana
- POSTgetFeeForMessage | Solana
- POSTgetFirstAvailableBlock | Solana
- POSTgetGenesisHash | Solana
- POSTgetHighestSnapshotSlot | Solana
- POSTgetIdentity | Solana
- POSTgetInflationGovernor | Solana
- POSTgetInflationRate | Solana
- POSTgetInflationReward | Solana
- POSTgetLatestBlockhash | Solana
- POSTgetLeaderSchedule | Solana
- POSTgetMaxRetransmitSlot | Solana
- POSTgetMaxShredInsertSlot | Solana
- POSTgetMinimumBalanceForRentExemption | Solana
- POSTgetMultipleAccounts | Solana
- POSTgetProgramAccounts | Solana
- POSTgetRecentBlockhash | Solana
- POSTgetRecentPerformanceSamples | Solana
- POSTgetRecentPrioritizationFees | Solana
- POSTgetSignaturesForAddress | Solana
- POSTgetSignatureStatuses | Solana
- POSTgetSlot | Solana
- POSTgetSlotLeader | Solana
- POSTgetStakeActivation | Solana
- POSTgetStakeMinimumDelegation | Solana
- POSTgetSupply | Solana
- POSTgetTokenAccountBalance | Solana
- POSTgetTokenAccountsByOwner | Solana
- POSTgetTokenLargestAccounts | Solana
- POSTgetLargestAccounts | Solana
- POSTgetTransaction | Solana
- POSTisBlockhashValid | Solana
- POSTsimulateTransaction | Solana
- logsSubscribe | Solana
- logsUnsubscribe | Solana
- blockSubscribe | Solana
- blockUnsubscribe | Solana
- accountSubscribe | Solana
- accountUnsubscribe | Solana
- programSubscribe | Solana
- programUnsubscribe | Solana
- rootSubscribe | Solana
- rootUnsubscribe | Solana
- signatureSubscribe | Solana
- signatureUnsubscribe | Solana
- slotSubscribe | Solana
- slotUnsubscribe | Solana
- slotsUpdatesSubscribe | Solana
- slotsUpdatesUnsubscribe | Solana
Ronin node API
- Getting started | Ronin
- POSTeth_blockNumber | Ronin
- POSTeth_getBlockByHash | Ronin
- POSTeth_getBlockByNumber | Ronin
- POSTeth_getBlockTransactionCountByHash | Ronin
- POSTeth_getBlockTransactionCountByNumber | Ronin
- POSTeth_newBlockFilter | Ronin
- POSTeth_getTransactionByHash | Ronin
- POSTeth_getTransactionReceipt | Ronin
- POSTeth_getTransactionByBlockHashAndIndex | Ronin
- POSTeth_getTransactionByBlockNumberAndIndex | Ronin
- POSTeth_getFilterChanges | Ronin
- POSTeth_call | Ronin
- POSTeth_sendRawTransaction | Ronin
- POSTdebug_traceBlockByHash | Ronin
- POSTdebug_traceBlockByNumber | Ronin
- POSTdebug_traceTransaction | Ronin
- POSTdebug_traceCall | Ronin
- POSTeth_chainId | Ronin
- POSTeth_syncing | Ronin
- POSTeth_estimateGas | Ronin
- POSTeth_gasPrice | Ronin
- POSTeth_maxPriorityFeePerGas | Ronin
- POSTeth_getTransactionCount | Ronin
- POSTeth_getBalance | Ronin
- POSTeth_getCode | Ronin
- POSTeth_getStorageAt | Ronin
- POSTeth_getLogs | Ronin
- POSTeth_newFilter | Ronin
- POSTweb3_clientVersion | Ronin
- POSTnet_listening | Ronin
- POSTnet_peerCount | Ronin
- POSTeth_getFilterChanges | Ronin
- POSTeth_uninstallFilter | Ronin
- eth_subscribe ("newHeads") | Ronin
- eth_subscribe("newPendingTransactions") | Ronin
- eth_subscribe ("logs") | Ronin
- eth_unsubscribe | Ronin
Gnosis Chain node API
- Getting started | Gnosis
- Beacon Chain | Gnosis
- Blocks info | Gnosis
- Transactions info | Gnosis
- Executing transactions | Gnosis
- Chain info | Gnosis
- Gas data | Gnosis
- Accounts info | Gnosis
- Logs & events | Gnosis
- Filter handling | Gnosis
- Client information | Gnosis
- Subscriptions | Gnosis
Cronos node API
- Getting started | Cronos
- POSTeth_blockNumber | Cronos
- POSTeth_getBlockByNumber | Cronos
- POSTeth_getBlockByHash | Cronos
- POSTeth_getBlockTransactionCountByNumber | Cronos
- POSTeth_getBlockTransactionCountByHash | Cronos
- POSTeth_newBlockFilter | Cronos
- POSTeth_getTransactionByHash | Cronos
- POSTeth_getTransactionReceipt | Cronos
- POSTeth_getTransactionByBlockNumberAndIndex | Cronos
- POSTeth_getTransactionByBlockHashAndIndex | Cronos
- POSTeth_newPendingTransactionFilter | Cronos
- POSTeth_call | Cronos
- POSTeth_sendRawTransaction | Cronos
- POSTeth_getBalance | Cronos
- POSTeth_getCode | Cronos
- POSTeth_getStorageAt | Cronos
- POSTeth_getProof | Cronos
- POSTeth_getTransactionCount | Cronos
- POSTeth_chainId | Cronos
- POSTeth_syncing | Cronos
- POSTweb3_clientVersion | Cronos
- POSTnet_listening | Cronos
- POSTnet_peerCount | Cronos
- POSTeth_estimateGas | Cronos
- POSTeth_gasPrice | Cronos
- POSTeth_maxPriorityFeePerGas | Cronos
- POSTeth_getLogs | Cronos
- POSTeth_newFilter | Cronos
- POSTeth_getFilterChanges | Cronos
- POSTeth_uninstallFilter | Cronos
Fantom node API
- Getting started | Fantom
- POSTeth_blockNumber | Fantom
- POSTeth_getBlockByNumber | Fantom
- POSTeth_getBlockByHash | Fantom
- POSTeth_getBlockTransactionCountByNumber | Fantom
- POSTeth_getBlockTransactionCountByHash | Fantom
- POSTeth_newBlockFilter | Fantom
- POSTeth_getTransactionByHash | Fantom
- POSTeth_getTransactionReceipt | Fantom
- POSTeth_getTransactionByBlockNumberAndIndex | Fantom
- POSTeth_getTransactionByBlockHashAndIndex | Fantom
- POSTeth_newPendingTransactionFilter | Fantom
- POSTeth_call | Fantom
- POSTeth_sendRawTransaction | Fantom
- POSTeth_getBalance | Fantom
- POSTeth_getCode | Fantom
- POSTeth_getStorageAt | Fantom
- POSTeth_getProof | Fantom
- POSTeth_getTransactionCount | Fantom
- POSTeth_chainId | Fantom
- POSTeth_syncing | Fantom
- POSTweb3_clientVersion | Fantom
- POSTnet_listening | Fantom
- POSTnet_peerCount | Fantom
- POSTeth_estimateGas | Fantom
- POSTeth_gasPrice | Fantom
- POSTeth_maxPriorityFeePerGas | Fantom
- POSTeth_getLogs | Fantom
- POSTeth_newFilter | Fantom
- POSTeth_getFilterChanges | Fantom
- POSTeth_uninstallFilter | Fantom
- Custom JS tracer | Fantom
- debug traceBlockByHash | Fantom Chain
- debug traceBlockByNumber | Fantom
- debug traceTransaction | Fantom
- trace block | Fantom
- trace transaction | Fantom
- trace filter | Fantom
- trace get | Fantom
Bitcoin node API
- Bitcoin API reference
- Bitcoin API Postman collection
- POSTgetbestblockhash | Bitcoin
- POSTgetblock | Bitcoin
- POSTgetblockchaininfo | Bitcoin
- POSTgetblockfilter | Bitcoin
- POSTgetblockhash | Bitcoin
- POSTgetblockheader | Bitcoin
- POSTgetblockstats | Bitcoin
- POSTgetchaintips | Bitcoin
- POSTgetchaintxstats | Bitcoin
- POSTgetdifficulty | Bitcoin
- POSTgetmempoolancestors | Bitcoin
- POSTgetmempooldescendants | Bitcoin
- POSTgetmempoolentry | Bitcoin
- POSTgetmempoolinfo | Bitcoin
- POSTgetrawmempool | Bitcoin
- POSTgettxoutsetinfo | Bitcoin
- POSTgettxout | Bitcoin
- POSTverifychain | Bitcoin
- POSTgettxoutproof | Bitcoin
- POSTpreciousblock | Bitcoin
- POSTverifytxoutproof | Bitcoin
- POSTuptime | Bitcoin
- POSTgetmemoryinfo | Bitcoin
- POSTgetrpcinfo | Bitcoin
- POSTgetblocktemplate | Bitcoin
- POSTgetmininginfo | Bitcoin
- POSTgetnetworkhashps | Bitcoin
- POSTprioritisetransaction | Bitcoin
- POSTgetpeerinfo | Bitcoin
- POSTgetnetworkinfo | Bitcoin
- POSTgetconnectioncount | Bitcoin
- POSTgetnettotals | Bitcoin
- POSTlistbanned | Bitcoin
- POSTping | Bitcoin
- POSTgetnodeaddresses | Bitcoin
- POSTdecodescript | Bitcoin
- POSTdecoderawtransaction | Bitcoin
- POSTgetrawtransaction | Bitcoin
- POSTestimatesmartfee | Bitcoin
- POSTvalidateaddress | Bitcoin
Starknet node API
- Getting started | Starknet
- POSTstarknet_call | Starknet
- POSTstarknet_estimateFee | Starknet
- POSTstarknet_estimateMessageFee | Starknet
- POSTstarknet_simulateTransactions | Starknet
- POSTstarknet_traceBlockTransactions | Starknet
- POSTstarknet_getClassHashAt | Starknet
- POSTstarknet_getNonce | Starknet
- POSTstarknet_getStorageAt | Starknet
- POSTstarknet_getTransactionByBlockIdAndIndex | Starknet
- POSTstarknet_getTransactionByHash | Starknet
- POSTstarknet_getClassAt | Starknet
Chainstack platform API
- Getting started
- Quick tutorial
- Organization
- Project
- Network
- Node
- Marketplace
- IPFS storage
- Faucet
Optimism node API
web3_sha3 | Optimism
POST
/
efb0a5eccd2caa5135eb54eba6f7f300
curl --request POST \
--url https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300 \
--header 'Content-Type: application/json' \
--data '{
"jsonrpc": "2.0",
"method": "web3_sha3",
"id": 1,
"params": [
"0x436861696E737461636B"
]
}'
{
"jsonrpc": "<string>",
"id": 123,
"result": "<string>"
}
Optimism API method web3_sha3
computes the Keccak-256 hash of the given data. This method is a utility function often used in Optimism for generating hashes of arbitrary data, which is a common requirement for various cryptographic operations.
This example computes Keccak-256 for the value Chainstack
.
Chainstack
in hex: 0x436861696E737461636B
.
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Parameters
data
— the data to hash, typically provided as a hexadecimal string.
Response
result
— the Keccak-256 hash of the input data, returned as a hexadecimal string.
Use case
The web3_sha3
method is essential for:
- Generating identifiers or hashes for on-chain data storage or referencing.
- Creating cryptographic proofs that require a hash of data.
- Developers needing to perform off-chain hash calculations that match the Optimism network’s hashing algorithm.
Body
application/json
Was this page helpful?
curl --request POST \
--url https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300 \
--header 'Content-Type: application/json' \
--data '{
"jsonrpc": "2.0",
"method": "web3_sha3",
"id": 1,
"params": [
"0x436861696E737461636B"
]
}'
{
"jsonrpc": "<string>",
"id": 123,
"result": "<string>"
}