Chainlist
Testnets
Poseidon-Testnet

Poseidon-Testnet

An ETH-native testnet blockchain, Poseidon-Testnet (Chain ID 31911), designed for safe smart contract and dApp development and integration testing.

Get started

Faucet

Poseidon-Testnet Faucet

Get free ETH fast and reliably. 0.01 ETH/day.

Chain Overview

Chain ID

Native Token

Ether (ETH)

RPC

RPC Latency

Latest Block

EIP-7702

Explorers

Block Explorer

https://poseidon-testnet.explorer.caldera.xyz

thirdweb Products

AI

Read and write onchain via natural language

Frequently asked questions

Poseidon-Testnet is a public, Ethereum-compatible test network that uses test ETH for gas and mirrors Poseidon’s latest protocol changes, enabling safe dApp, smart-contract, and cross-chain bridge integration testing without real value at risk. Primary use cases include end-to-end bridge route validation, contract deployment/upgrade rehearsals, interoperability QA, and performance experiments; key metrics for comparison (as of Sep 2025): avg gas cost ≈ 0 in test ETH, block speed/TPS not officially published (variable by release), and activity is bursty with periodic resets.

Poseidon-Testnet is unique for bridge-focused interoperability testing on an ETH-native, EVM-aligned environment, so standard Ethereum tooling, wallets, and monitoring work out of the box with minimal configuration. Compared to generic public testnets, it prioritizes pre-production parity and operational safety (faucet-funded execution, reset cycles) over raw throughput; metrics to note (as of Sep 2025): near-zero gas fees (test ETH), variable block times, no committed TPS target, and developer-driven activity patterns rather than sustained mainnet load.

Poseidon-Testnet uses ETH as the gas token for transaction fees. You can obtain ETH by bridging from other chains or purchasing using thirdweb Bridge, or through faucets (for testnet).

To bridge ETH to Poseidon-Testnet, connect your wallet to thirdweb bridge, select your source chain, choose the token you want to bridge, select Poseidon-Testnet as the destination, enter the amount, and confirm the transaction. The bridge will handle the cross-chain transfer instantly.

To build on Poseidon-Testnet you can use thirdweb, which provides an easy way to build, monetize and scale your apps, games or agents. You can find detailed guides and documentation on https://portal.thirdweb.com to get started quickly.

To add Poseidon-Testnet to your wallet, you can connect your wallet and click on [Add to Wallet] button at the top of the page. Alternatively, you can add the network manually using the RPC URL and chain details and add it to your wallet's network settings.

To send ETH on Poseidon-Testnet, ensure your wallet is connected to the Poseidon-Testnet network, enter the recipient's address, specify the amount of ETH to send, review the gas fee, and confirm the transaction in your wallet.

Home Blog Changelog Feedback Privacy Policy Terms of Service Chainlist

Poseidon-Testnet

Faucet

Poseidon-Testnet Faucet

Chain Overview

Chain ID

Native Token

RPC

RPC Latency

Latest Block

EIP-7702

Explorers

Block Explorer

thirdweb Products

Tokens

AI

HTTP API

Frequently asked questions

Poseidon-Testnet

Faucet

Poseidon-Testnet Faucet

Chain Overview

Chain ID

Native Token

RPC

RPC Latency

Latest Block

EIP-7702

Explorers

Block Explorer

thirdweb Products

Tokens

AI

HTTP API

Frequently asked questions

What is Poseidon-Testnet and what are its primary use cases?

What makes Poseidon-Testnet unique compared to other blockchain networks?

What is the gas token used for Poseidon-Testnet, and how to get it?

How to bridge to Poseidon-Testnet network?

How to build on Poseidon-Testnet network?

How to add Poseidon-Testnet network to wallet?

How to send or receive ETH on the Poseidon-Testnet network?