What is the B3 mainnet RPC URL?

B3's listed primary public RPC URL is https://mainnet-rpc.b3.fun.

What block explorer does B3 use?

B3's listed block explorer is https://explorer.b3.fun.

Chain profile

B3 chain ID 8333 and mainnet RPC URL

Source snapshotJuly 4, 2026

Source evidence snapshot July 4, 2026. B3 documentation lists mainnet chain ID 8333, RPC URL https://mainnet-rpc.b3.fun, explorer.b3.fun, and ETH as the native token symbol.

Quick settings

B3 RPC status and chain ID answer

B3 mainnet uses chain ID 8333 / 0x208d, RPC URL https://mainnet-rpc.b3.fun, explorer https://explorer.b3.fun, and ETH as the gas token. Use the latest source check and linked docs to verify the fields before adding the network to a wallet, script, or app.

Chain ID: 8333 / 0x208d
RPC URL: https://mainnet-rpc.b3.fun
Explorer: https://explorer.b3.fun
Gas token: ETH
Source docs: B3 docs
Latest check: Jul 4, 2026
Source snapshot: July 4, 2026
Config path: wallet_addEthereumChain JSON

Copy B3 config Open source docs Explorer directory Gas token directory

Good fit when you need:

the B3 chain ID, RPC URL, explorer, and gas token in one place;
source documentation links beside the copied setup fields;
manual wallet config fields without connecting a wallet or choosing an RPC provider.

Before you paste these fields:

compare the chain ID against the source link on this page;
open the explorer once and confirm it matches the network you expect;
use the public RPC for setup checks, then choose monitored infrastructure for production traffic.

Chain ID8333 / 0x208d

RPC URLhttps://mainnet-rpc.b3.fun

Explorerhttps://explorer.b3.fun

Gas tokenETH

VerificationVerified metadata

Metadata labelJuly 4, 2026

Evidence snapshotJul 4, 2026

Verification record

Manual metadata review and automated evidence checks are tracked separately. This is not a live uptime, latency, or production reliability monitor.

Manual metadata review: July 4, 2026
Verification status: Verified metadata
Verification run: source-monitoring-2026-07-04
Verification tool: source-monitoring-refresh
Source set: B3 docs
Manual review cadence: monthly; after August 3, 2026
Latest recorded chain ID probe: eth_chainId matched expected 0x208d; observed 0x208d on Jul 4, 2026

Methodology Report a correction

B3 wallet-add fields

Wallet directory sites often expose a connect button. Main.net keeps the same MetaMask and EIP-3085 setup fields as text so developers can compare them with official/source docs before calling wallet_addEthereumChain.

chainId: 0x208d (8333)
chainName: B3
nativeCurrency: ETH; name ETH, symbol ETH, decimals 18
rpcUrls: https://mainnet-rpc.b3.fun
blockExplorerUrls: https://explorer.b3.fun

GlossaryChain IDHow wallet and RPC software identify a mainnet network.GlossaryRPC endpointWhat an RPC URL does and why public endpoints can be rate-limited.GlossaryMainnetThe production network context for these chain settings.Gas tokenETH gas tokenOther mainnet rows that use ETH for gas.Network categoryEVM mainnetsCompare B3 with related evm mainnets by chain ID, RPC URL, explorer, and source links.Network categoryGaming and app-chain mainnetsCompare B3 with related gaming and app-chain mainnets by chain ID, RPC URL, explorer, and source links.GuideChain ID listChain IDs, RPC URLs, explorers, and source links across Main.net.

Monitoring evidence

These checks are review signals only. They are not uptime, latency, privacy, or production reliability claims.

Snapshot generated: Jul 4, 2026
Source checks: 1 sources checked
Source changes: 0 changes since the previous source hash snapshot
Source fetch failures: 0
eth_chainId probe: matched expected 0x208d
Per-source check timing: Included in the monitoring snapshot, not used as this page's review date

View monitoring snapshots orsource change history.

Network endpoints

Primary public RPC: https://mainnet-rpc.b3.fun
Explorer: https://explorer.b3.fun
Official/source documentation: B3 docs
Chain type: EVM mainnet
Chain ID hex: 0x208d
Manual review cadence: monthly; next review after August 3, 2026

B3 common questions

What is the B3 mainnet RPC URL?: B3's listed primary public RPC URL is https://mainnet-rpc.b3.fun.
What is B3's chain ID?: B3's listed chain ID is 8333.
What block explorer does B3 use?: B3's listed block explorer is https://explorer.b3.fun.
What gas token does B3 use?: B3's listed gas token is ETH.

Copy-ready config

Neutral app configuration built from the verified fields above. Copy buttons only place text on your clipboard; they do not connect a wallet, request permissions, or rank RPC providers.

Chain ID decimal8333

Chain ID hex0x208d

RPC URLhttps://mainnet-rpc.b3.fun

Explorer URLhttps://explorer.b3.fun

EIP-3085-shaped JSON

Rendered as text for manual review before use.

{
  "chainId": "0x208d",
  "chainName": "B3",
  "nativeCurrency": {
    "name": "ETH",
    "symbol": "ETH",
    "decimals": 18
  },
  "rpcUrls": [
    "https://mainnet-rpc.b3.fun"
  ],
  "blockExplorerUrls": [
    "https://explorer.b3.fun"
  ]
}

Developer snippets

Static examples generated from Main.net fields. These snippets are for manual configuration review and read-only RPC checks; they do not connect wallets, create signers, submit writes, or rank providers.

viem chain definition

Read-only snippet generated from Main.net fields. Review official sources before production use.

import { defineChain } from 'viem'

export const b3Mainnet = defineChain({
  id: 8333,
  name: "B3",
  nativeCurrency: {
    name: "ETH",
    symbol: "ETH",
    decimals: 18,
  },
  rpcUrls: {
    default: { http: ["https://mainnet-rpc.b3.fun"] },
    public: { http: ["https://mainnet-rpc.b3.fun"] },
  },
  blockExplorers: {
    default: {
      name: "explorer.b3.fun",
      url: "https://explorer.b3.fun",
    },
  },
})

wagmi read-only config

Read-only transport example generated from Main.net fields. It does not include account adapters or transaction actions.

import { createConfig, http } from 'wagmi'
import { b3Mainnet } from './b3'

export const config = createConfig({
  chains: [b3Mainnet],
  transports: {
    [b3Mainnet.id]: http("https://mainnet-rpc.b3.fun"),
  },
})

ethers read-only provider

Read-only JsonRpcProvider example generated from Main.net fields. It does not create a signer.

import { JsonRpcProvider } from 'ethers'

export const provider = new JsonRpcProvider("https://mainnet-rpc.b3.fun", {
  chainId: 8333,
  name: "b3",
})

const network = await provider.getNetwork()
console.log(network.chainId)

bash

curl eth_chainId check

Minimal JSON-RPC identity check. This verifies the endpoint-reported chain ID only, not uptime or production suitability.

curl -s -X POST \
  -H 'content-type: application/json' \
  --data '{"jsonrpc":"2.0","id":1,"method":"eth_chainId","params":[]}' \
  https://mainnet-rpc.b3.fun

# Expected chain ID: 8333 / 0x208d

Developer signals

External dashboards a developer may inspect before choosing where to deploy. Main.net links to these references but does not collect the metric values, normalize methodologies, rank chains, or recommend deployments.

explorerB3 explorerExplorer-hosted blocks, transactions, contracts, token transfers, and verification tools from the listed explorer.

Main.net links to external developer-signal dashboards but does not collect, normalize, rank, or republish their metric values in this version.
External metrics can use different methodologies and update schedules. Check the linked provider documentation before comparing chains.
These links are not recommendations, rankings, investment advice, or claims that a chain is suitable for a specific application.

Source links

Connect to B3

Safety note

B3 docs recommend checking that wallets are connected to the correct network. Confirm chain ID 8333 before sending transactions.

Main.net is an independent reference site. It does not operate this chain, custody assets, execute transactions, or provide investment advice.

Report a correction

If this page has stale RPC, explorer, chain ID, or source information, open a public correction issue with a source link so it can be checked.

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