Plus, celebrating the winning teams at ETHGlobal Cannes and a look at upcoming events. Dive in.

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Hi there,

 

August is heating up, and so is the onchain momentum in NYC. Next week, we’re bringing developers together for a hands-on deep dive into building with Circle and USDC.

 

On August 13, Circle Dev Summit NYC will deliver a 101 on stablecoins plus live demos of embedding wallets, crosschain interoperability, and seamless global payouts — all in Circle’s One World Trade Center headquarters.

 

And that’s just the start. We’re fired up to build alongside some of New York’s brightest at Ethereum NYC 2025, Pragma New York 2025, and ETHGlobal New York 2025.

 

Join us in creating the next era of onchain innovation.

 

—Team Circle

Start Building

Tip of the Month

Running low on testnet tokens? The Circle Developer Console Faucet has you covered, delivering both testnet USDC and native testnet gas tokens across supported chains. And it goes beyond faucet.circle.com, which offers testnet USDC only.

To get started, create a Circle Wallet through the Circle Developer Platform, copy the wallet ID, and request tokens. As of July 2025, supported testnets include Aptos Testnet, Arbitrum Sepolia, Avalanche Fuji, Base Sepolia, Ethereum Sepolia, OP Sepolia, Polygon Amoy, Solana Devnet, and Unichain Sepolia. Read the testnet faucet documentation to learn more.

Integration

Circle Wallets are now available on Aptos Mainnet and Aptos Testnet. That means Wallets now support Aptos, and can be paired with Circle Gas Station to sponsor transaction fees — enabling gasless transactions for end users.

 

Want to get started? Here’s how to build Circle Developer Controlled Wallets configured for Aptos Testnet using the Developer-Controlled Wallets software development kit:

import { initiativeDeveloperControlledWalletsClient } from '@circle-fin/developer-controlled-wallets'

const circleDeveloperSdk = initiateDeveloperControlledWalletsClient({

    apiKey: '<circle-api-key>',

    entitySecret: '<circle-entity-secret>'

})

const walletSet = await circleDeveloperSdk.createWalletSet({

    name: "aptos-set",

});

const wallets = await circleDeveloperSdk.createWallets({

    accountType: "EOA"

    blockchains: ["APTOS-TESTNET"],

    count: 2,

    walletSetId: walletSet.data?.walletSet.id!,

});

 Next, learn how to send gasless transactions.

Community Highlights

Stableit

 

Stableit is a third-party software development kit built on Circle’s Cross-Chain Transfer Protocol (CCTP) that powers native USDC crosschain transfers across supported chains. Get started with the Stableit quickstart guide.

Circle Connect Turkey

 

We hosted an in-person meetup in Turkey last month with the Build on Circle Community and our regional education partner Rise In1. Builders, founders, and developers gathered to explore real-world use cases powered by Circle’s stablecoin infrastructure. Together, we had the opportunity to dive deep into CCTP mechanics and to build connections with fellow innovators.

Congratulating ETHGlobal Cannes Winners

Last month’s ETHGlobal Cannes brought the energy, and we couldn’t be more proud of the builders that showed up with their best. Join us in celebrating the winning teams, and see how they used Circle’s tools to solve problems in money movement and finance.

Upcoming Events

Look out for Circle at these upcoming conferences and events:

AUG 13

 

Circle Dev Summit NYC

New York, US

RSVP to secure your spot

AUG 14

 

ETHGlobal Pragma

New York, US

AUG 15–17

 

ETHGlobal NYC

New York, US

AUG 25-27

 

Open Source Summit Europe 2025

Amsterdam, The Netherlands

Come build with us, or just stop by to say hello.

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1. Reference to any specific company, product, service, or website of any third party does not constitute an implied or express endorsement, recommendation, favoring or validation by Circle. The content presented is intended for informational purposes only. Reliance upon any content or information presented is at the sole discretion of the audience; Circle shall not be liable for any damage or loss relating to the use of or reliance upon any such content or information presented. The views and opinions of others expressed herein do not necessarily state or reflect those of Circle.

 

Services are provided by Circle Technology Services, LLC (“CTS”). Services do not include financial, investment, tax, legal, regulatory, accounting, business, or other advice. CTS is only a provider of software and related technology and is not engaged in any regulated money transmission activity in connection with the services it provides. For additional details, please click here to see the Circle Developer terms of service.

 

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