Inside the Trading Engine Behind ChangeNOW’s ‘Fast, Seamless Swaps’

Open ChangeNOW and a crypto swap looks like the simplest thing in the world: pick two tokens, send one, receive the other—a process the non-custodial exchange says usually completes within minutes, across more than 110 blockchains including ETH, BSC and SOL.

It’s quick, streamlined—and, according to Chief Strategy Officer Pauline Shangett—underpinned by layers of dedicated infrastructure, supporting more than 70 fiat options and over 1,500 digital assets, with more added weekly.

ChangeNOW is “a trading engine that a lot of people can access all at once,” Shangett said. The platform, she explained, acts as a middleman between the user and a centralized or decentralized exchange, executing trades on a client’s behalf “without the client having to watch over things like the order book, transaction fees and complicated interfaces.”

That engine leans heavily on its own inventory. Shangett said ChangeNOW “mostly operates in our own liquidity when it comes to swaps,” pricing trades off exchange order books it sources liquidity from, market-data feeds such as CoinMarketCap, and an in-house “liquidity engine” of wallets holding balances for specific pairs. Running off its own reserves, she argued, means “network speed is not as much of a liability as it could be.”

In a recent benchmark by swap aggregator Swapzone, drawing on 150,000 transactions, ChangeNOW’s median settlement for a USDT-to-ETH swap clocked in at under a minute, against an industry median of around 45 minutes.

Of course, such comparisons hinge on the pairs and conditions tested, with ChangeNOW offering swaps across a wide range of tokens including meme coins, AI coins, DeFi, GameFi, stablecoins, privacy coins, DePIN, and RWA.

Fiat currency support operates through “trusted partners” including Transak, Simplex, Banxa, and Guardarian, enabling ChangeNOW users to buy crypto with Visa, MasterCard, Google Pay, Apple Pay, FasterPay, Sepa, Pix, ACH, and Revolut.

New features

ChangeNOW has rolled out a set of new tools that extend its offering beyond simple swaps. Private transfers route a transaction so the sender’s wallet address and on-chain trail aren’t exposed to the recipient, while still maintaining AML monitoring in the background. Users can also generate a Permanent Exchange Address that provides a fixed, reusable deposit address that automatically converts any incoming crypto into a preselected payout coin, aimed at recurring conversions.

Meanwhile, a new crypto payment link lets users spin up a shareable link to request or accept payments in Bitcoin, stablecoins, and more than 100 other assets. And a prediction markets hub pulls popular markets across crypto, politics, finance, and pop culture into one place to track and compare.

Push it to the limit

Demand shocks are managed by geography. Shangett cited the 2021 Dogecoin frenzy, a Monero liquidity crunch, and the more recent TRUMP token launch as stress tests. Because the team spans time zones, it’s able to pre-position inventory, she explained. “We get extra liquidity for that particular token for when American users wake up,” she said, adding that those surges are when ChangeNOW “sets our transaction records.”

On thinly traded or volatile pairs, Shangett said “we actively manage liquidity to ensure stability,” so the platform sometimes imposes minimum or maximum trade sizes—though when minimal amounts are required, they are “incredibly low,” running to as little as $2. When Ethereum congests, the fix is blunt—”adjusting the network fee,” which she said ChangeNOW sometimes absorbs. During chain halts, forks or hacks, “we provide real-time alerts” that swaps on networks like BNB Chain or Solana may run slow.

The exchange is “proud” to point to its 4.6 rating on Trustpilot, based on more than 13.000 reviews, as evidence that its approach is working, while offering 24/7 support in the event of hiccups.

That support structure includes an “L0” community team on social channels, “L1” handling chat and email tickets, escalating to L2 and then to L3 engineers “on call pretty much 24/7,” Shangett said. Emergencies trigger “an all-hands, rapid-response protocol” that activates L3 and L4 engineers—but “most of them can be solved by either our compliance department or L2 engineers.”

Future facing

Asked what she’s proudest of that goes unreported, Shangett named the platform’s cross-DEX bridging—”a lot cheaper and a lot faster than a traditional decentralized cross-chain bridge”—and its private transfers, which operate across both B2B and B2C transfers, as well as in the platform’s self-custody wallet, NOW Wallet.

“We’ve always been huge privacy nuts,” she said. “It allows people to send funds to basically anybody without doxing their initial wallet address, which might be critical for legal entities or high net worth individuals, or just people who care about their privacy a lot, and we’ve seen quite a lot of use of this feature since its release.”

Simplicity is a work in progress, with ChangeNOW constantly working to improve its offering, Shangett said. Some of that streamlining is taking place in the back end, with the exchange “upgrading our strong foundation to make it even better,” she said. The focus is on incremental improvements, she added, geared towards making the platform “a little bit faster, a little bit more optimal, a little bit safer, and more secure.”