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JSON-RPC Compatibility

Conflux eSpace implements the Web3 JSON-RPC protocol.

Check out the following video to get a quick overview of this topic:

Methods​

MethodStatusNote
web3_clientVersion✅
net_version✅
eth_protocolVersion✅
eth_chainId✅
eth_gasPrice✅
eth_blockNumber✅
eth_getBalance✅
eth_getStorageAt✅
eth_getCode✅
eth_getTransactionCount✅
eth_sendRawTransaction✅
eth_submitTransaction✅
eth_call✅
eth_estimateGas✅
eth_getTransactionByHash✅
eth_getTransactionReceipt✅
eth_getLogs✅The max gap between fromBlock and toBlock is limited to 1000
eth_getBlockByHash✅
eth_getBlockByNumber✅
eth_getBlockTransactionCountByHash✅
eth_getBlockTransactionCountByNumber✅
eth_getTransactionByBlockHashAndIndex✅
eth_getTransactionByBlockNumberAndIndex✅
eth_syncing✅
eth_hashrate✅
eth_coinbase✅
eth_mining✅
eth_maxPriorityFeePerGas✅
eth_accounts✅
eth_submitHashrate✅
eth_getUncleByBlockHashAndIndex✅
eth_getUncleByBlockNumberAndIndex✅
eth_getUncleCountByBlockHash✅
eth_getUncleCountByBlockNumber✅
parity_getBlockReceipts✅
eth_pendingTransactions🚧
web3_sha3🚧
trace_block✅Compatible with parity and erigon since v3.0.0
trace_filter✅Compatible with parity and erigon since v3.0.0
trace_transaction✅Compatible with parity and erigon since v3.0.0
trace_get✅Supported at v3.0.0
trace_call🚧
trace_rawTransaction🚧
trace_replayTransaction🚧
trace_replayBlockTransactions🚧
eth_feeHistory✅Supported at v2.4.0
eth_getFilterChanges✅Supported at v2.1.1
eth_getFilterLogs✅Supported at v2.1.1
eth_newBlockFilter✅Supported at v2.1.1
eth_newFilter✅Supported at v2.1.1
eth_newPendingTransactionFilter✅Supported at v2.1.1
eth_uninstallFilter✅Supported at v2.1.1
debug_traceTransaction✅Supported at v2.4.0
debug_traceBlockByHash✅Supported at v2.4.0
debug_traceBlockByNumber✅Supported at v2.4.0
debug_traceCall✅Supported at v2.4.1
txpool_status✅Supported at v3.0.0
txpool_inspect✅Supported at v3.0.0
txpool_content✅Supported at v3.0.0
txpool_contentFrom✅Supported at v3.0.0
net_listening❌
net_peerCount❌
eth_compileLLL❌
eth_compileSerpent❌
eth_compileSolidity❌
eth_getCompilers❌
eth_getProof❌EIP-1186
eth_getWork❌
db_*❌
shh_*❌

Legend: ❌ = not supported. 🚧 = work in progress. ✅ = supported.

Conflux Specific RPCs​

trace_blockSetAuth​

trace_blockSetAuth is a Conflux specific RPC used to retrieve the trace data for SetAuth operations in EIP-7702 transactions. The returned result is as follows:

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": [
        {
            "action": {
                "address": "0xf0109fc8df283027b6285cc889f5aa624eac1f55",
                "chainId": "0x401",
                "nonce": "0x1",
                "author": "0x3d69d968e3673e188b2d2d42b6a385686186258f"
            },
            "result": "invalid_nonce",
            "transactionPosition": 0,
            "transactionHash": "0x716f6f3294346099d98d5f9b0e12846647e1d17b9076d1a5ac0e42dac72f7229",
            "blockNumber": 7800,
            "blockHash": "0x015880a004ff96fed4161353994958d0f09eeae770f73ca888f105dc9f4ef1cc"
        }
    ]
}

Check trace_blockSetAuth for more details.

Notes​

  • eth_sendRawTransaction supports legacy(EIP-155), type-1(EIP-2930) and type-2(EIP-1559) transactions. Type-3 transactions (EIP-4844) transactions are not supported yet.
  • Methods not listed here are also not supported.
  • There is no concept of uncle (aka ommer) blocks. The eth_getUncleByBlockHashAndIndex and eth_getUncleByBlockNumberAndIndex methods always return null. The eth_getUncleCountByBlockHash and eth_getUncleCountByBlockNumber methods return zero for valid block IDs and null for invalid block IDs. Additionally, uncle-related block metadata such as sha3Uncles is sha3 of empty hash array.
  • The nonstandard Geth tracing APIs are not supported at present
  • The nonstandard Parity tracing APIs are in progress
  • A breaking change at v3.0.0: Trace RPC methods is compatible with parity and erigon, including trace_block, trace_transaction, trace_filter.

Extra Fields RPC Response​

Extra Fields of Transaction Receipts​

Transaction receipts returned by the eth_getTransactionReceipt RPC have the following extra fields:

  • burntGasFee: The amount of fees that is burned. In Conflux, the base fee of the transaction is partially burned rather than entirely burned. Check CIP-137 for more details.
  • gasFee: The amount of fees of a transaction. Added at v3.0.0.

Extra Fields of Block​

Block object returned by the eth_getBlockByNumber, eth_getBlockByHash RPC has the following extra fields:

  • espaceGasLimit: The actual gas limit for eSpace transactions, which is different from gasLimit in the block object. Check Spaces for more details. Added at v3.0.0.

pending tag​

Only eth_getTransactionCount method has supported pending tag. Other method will treat pending tag as latest

  • eth_getTransactionCount ✅
  • eth_getBalance
  • eth_getCode
  • eth_getStorageAt
  • eth_call

Note: filter related methods also not support pending tag

Data verifiability​

Below fields can not guarantee the verifiability

Block​

  • hash
  • stateRoot
  • receiptsRoot
  • transactionsRoot
  • totalDifficulty

Receipt​

  • logsBloom

pub/sub​

Starting from v2.1.0 newHeads and logs is supported

ETH RPC docs​