RPC method

eth_getBlockByNumber on Fraxtal

Supported on SwiftNodes

Everything below was measured on 2026-10-13 by calling eth_getBlockByNumber on Fraxtal through the same endpoint customers use, and is re-measured weekly.

What eth_getBlockByNumber does

Returns a block by number or tag (latest, safe, finalized, pending, earliest): the header, and either the transaction hashes or the full transactions. Indexers, explorers and wallets use it to follow the chain.

eth_getBlockByNumber on Fraxtal: what we measured

Header fields	26
Transactions per block	1, 1, 1, 1, 1 in five consecutive blocks
Response size, full transactions (true)	2.6 KB average
Response size, hashes only (false)	1.8 KB
Gas limit	30,000,000
Gas used in the latest block	48,367 (0.161% of the limit)
Base fee	254 wei
Tag "safe"	block 42,542,158
Tag "finalized"	block 42,541,615
Tag "pending"	block 42,542,217
Tag "earliest"	block 0

What is different on Fraxtal

The header includes the fields added by London (EIP-1559 base fee), Shanghai (withdrawals), Cancun (EIP-4844 blob gas), Cancun (EIP-4788 beacon root), Prague (EIP-7685 requests). Code that assumes Ethereum's current header shape will parse it as is.

5 of the 5 transactions in those five blocks were system transactions (5 × type 0x7e, L1-to-L2 deposit (OP Stack)). They are not user activity: filter them out when counting transactions.

"finalized" was 601 blocks (about 20 min) behind the head.

A real Fraxtal block header

From block 42,542,213, as our endpoint returned it (long hex values shortened).

{
  "hash": "0x400448d438d5338492fa85e53483f4671e579b32b7d59b7c1c4c4bbb05412230",
  "parentHash": "0xd915806cbb5b4e9bb7b984544a4f72817affefdc11ae14011d15fe51800fa2bf",
  "sha3Uncles": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
  "miner": "0x4200000000000000000000000000000000000011",
  "stateRoot": "0x01d73302a95b1d60cae3dac73921b447a3f2032e4c40c647fc96fdcc36574cbe",
  "transactionsRoot": "0x37e301dc40ec017b03d6457ad902cc976c408d81f8b8824107a146f287dbff88",
  "receiptsRoot": "0x4d93aa1ee1e913788817c3d9e7a4364d74c5f0c038d650cb6e0c272904dd7e05",
  "logsBloom": "0x0000000000000000…(256 bytes)",
  "difficulty": "0x0",
  "number": "0x2892485",
  "gasLimit": "0x1c9c380",
  "gasUsed": "0xbcef",
  "timestamp": "0x6ace2661",
  "extraData": "0x00000000fa0000000a",
  "mixHash": "0x59ef452e9e5c9ea841d12194d2fa1b767b3e76a3357bf32287e048d749f94552",
  "nonce": "0x0000000000000000",
  "baseFeePerGas": "0xfe",
  "withdrawalsRoot": "0xfe98a2d72d7bcd1032efd1428e1029b4f0017761f6d6c9c72c70e784035a1e11",
  "blobGasUsed": "0x0",
  "excessBlobGas": "0x0",
  "parentBeaconBlockRoot": "0xaeb58f112727329bbb98c90e9d952bb9338c37a840c27397d51256bf729db66b",
  "requestsHash": "0xe3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
  "size": "0x381",
  "uncles": [],
  "transactions": "1 transactions",
  "withdrawals": []
}

Example request

curl -s https://rpc.swiftnodes.io/rpc/fraxtal?key=YOUR_API_KEY \
  -X POST -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_getBlockByNumber","params":["latest",false]}'

import { createPublicClient, http } from "viem";

const client = createPublicClient({
  transport: http("https://rpc.swiftnodes.io/rpc/fraxtal?key=YOUR_API_KEY"),
});

// Header plus transaction hashes (1.8 KB)
const block = await client.getBlock({ blockTag: "latest" });

// With full transactions (2.6 KB on average on Fraxtal)
const full = await client.getBlock({ blockNumber: block.number, includeTransactions: true });
const userTxs = full.transactions.filter((t) => !["0x7e"].includes(t.typeHex));

// A block that will not be reorganised
const final = await client.getBlock({ blockTag: "finalized" });

Other methods on Fraxtal

eth_getBlockByNumber on other chains

Frequently asked questions

Does Fraxtal support eth_getBlockByNumber?

Yes. eth_getBlockByNumber answered on the SwiftNodes Fraxtal endpoint when our weekly probe called it through the customer path (2026-10-13).

How many transactions are in each Fraxtal block?

In five consecutive blocks on 2026-10-13: 1, 1, 1, 1, 1.

Fraxtal endpoints, live block height and WebSocket status are on the Fraxtal RPC page.

One key covers every chain we serve, and SwiftNodes has a free tier.