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Testnets
QI0521S2T

QI0521S2T

A developer-focused testnet blockchain with Chain ID 14255 and YFT test currency, built for safe integration testing and pre-deployment validation.

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Faucet

QI0521S2T Faucet

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

Chain Overview

Chain ID

Native Token

QI0521S2T Token (YFT)

RPC

RPC Latency

Latest Block

EIP-7702

thirdweb Products

AI

Read and write onchain via natural language

Frequently asked questions

QI0521S2T is a YFT-denominated testnet network used by the cross-chain bridge to safely validate contracts, routes, and relayers prior to mainnet deployment. Primary use cases include integration testing of asset transfers and message passing, smart-contract dry runs, and performance benchmarking without real-economic risk. Key metrics (as of Sep 2025): avg gas cost—n/a (testnet YFT has no market price), block speed—n/a (not publicly documented), TPS—n/a, network activity—n/a (no public telemetry; Info URL N/A).

Unlike generic testnets, QI0521S2T mirrors the YFT fee and nonce semantics needed for end-to-end cross-chain bridge QA while remaining isolated from mainnet value. It prioritizes rapid iteration and deterministic testing over public throughput, which is why official performance stats are not published: avg gas cost—n/a, block speed—n/a, TPS—n/a, network activity—n/a. This focus makes it ideal for automated CI/CD pipelines, relayer simulations, and safety checks before moving to production networks.

QI0521S2T uses YFT as the gas token for transaction fees. You can obtain YFT by bridging from other chains or purchasing using thirdweb Bridge, or through faucets (for testnet).

To bridge YFT to QI0521S2T, connect your wallet to thirdweb bridge, select your source chain, choose the token you want to bridge, select QI0521S2T as the destination, enter the amount, and confirm the transaction. The bridge will handle the cross-chain transfer instantly.

To build on QI0521S2T 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 QI0521S2T 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 YFT on QI0521S2T, ensure your wallet is connected to the QI0521S2T network, enter the recipient's address, specify the amount of YFT to send, review the gas fee, and confirm the transaction in your wallet.

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QI0521S2T

Faucet

QI0521S2T Faucet

Chain Overview

Chain ID

Native Token

RPC

RPC Latency

Latest Block

EIP-7702

thirdweb Products

Wallets

Tokens

AI

HTTP API

Frequently asked questions

QI0521S2T

Faucet

QI0521S2T 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 QI0521S2T and what are its primary use cases?

What makes QI0521S2T unique compared to other blockchain networks?

What is the gas token used for QI0521S2T, and how to get it?

How to bridge to QI0521S2T network?

How to build on QI0521S2T network?

How to add QI0521S2T network to wallet?

How to send or receive YFT on the QI0521S2T network?