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Testnets
FST 12-22 V2

FST 12-22 V2

An open blockchain testnet for developers, FST 12-22 V2 uses valueless EJJ and chain ID 78933 to enable safe, isolated pre-production testing.

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Faucet

FST 12-22 V2 Faucet

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

Chain Overview

Chain ID

Native Token

FST 12-22 V2 Token (EJJ)

RPC

RPC Latency

Latest Block

EIP-7702

thirdweb Products

AI

Read and write onchain via natural language

Frequently asked questions

FST 12-22 V2 is an EVM-compatible testnet for the cross-chain bridge that validates asset transfers, message passing, and liquidity routing before mainnet; its native currency is EJJ (faucet-funded for gas). Primary use cases include end-to-end QA of bridge contracts and relayers, SDK/wallet integration, and simulations of reorgs and finality delays to harden reliability. Metrics (Sep 2025): no public explorer/benchmarks; average gas cost is faucet EJJ (near-zero USD), while block speed, TPS, and activity are scenario-dependent and not production-representative.

FST 12-22 V2 is unique as a controlled, versioned testnet with permissioned validators, adjustable gas price floors and block gas limits, state snapshots/resets, and verbose tracing—purpose-built to stress-test cross-chain bridging. Unlike public testnets, it intentionally varies block intervals and throughput to emulate congestion, outages, and finality delays while keeping fees minimal in EJJ to maximize test coverage. Metrics highlight (Sep 2025): avg gas cost—faucet EJJ (near-zero USD); block speed, TPS, and activity—variable by test plan with no SLA, so results are not comparable to mainnet or public L2s.

FST 12-22 V2 uses EJJ as the gas token for transaction fees. You can obtain EJJ by bridging from other chains or purchasing using thirdweb Bridge, or through faucets (for testnet).

To bridge EJJ to FST 12-22 V2, connect your wallet to thirdweb bridge, select your source chain, choose the token you want to bridge, select FST 12-22 V2 as the destination, enter the amount, and confirm the transaction. The bridge will handle the cross-chain transfer instantly.

To build on FST 12-22 V2 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 FST 12-22 V2 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 EJJ on FST 12-22 V2, ensure your wallet is connected to the FST 12-22 V2 network, enter the recipient's address, specify the amount of EJJ to send, review the gas fee, and confirm the transaction in your wallet.

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FST 12-22 V2

Faucet

FST 12-22 V2 Faucet

Chain Overview

Chain ID

Native Token

RPC

RPC Latency

Latest Block

EIP-7702

thirdweb Products

Wallets

Tokens

AI

HTTP API

Frequently asked questions

FST 12-22 V2

Faucet

FST 12-22 V2 Faucet

Chain Overview

Chain ID

Native Token

RPC

RPC Latency

Latest Block

EIP-7702

thirdweb Products

Wallets

Tokens

AI

HTTP API

Frequently asked questions

What is FST 12-22 V2 and what are its primary use cases?

What makes FST 12-22 V2 unique compared to other blockchain networks?

What is the gas token used for FST 12-22 V2, and how to get it?

How to bridge to FST 12-22 V2 network?

How to build on FST 12-22 V2 network?

How to add FST 12-22 V2 network to wallet?

How to send or receive EJJ on the FST 12-22 V2 network?