Blockaid Brings Real-Time Address Scanning to Polyester’s Cross-Chain DEX

Executive Summary

Polyester is a high-performance, permissionless, and non-custodial decentralized exchange. It runs on Polyester Chain, its own EVM-compatible Layer 1, and takes native deposits and withdrawals across 16+ chains through Zipper, the wrapping protocol that turns each deposit into a 1:1-backed Zipped Asset. Traders get order-book spot markets, one unified balance across chains, and trading privacy, with no KYC and no bridging step.

Polyester has integrated Blockaid’s Address Scanning into its deposit and withdrawal flow. Every external address now receives a real-time verdict before a deposit is zipped onto Polyester Chain and before a withdrawal is released to an outside wallet, flagging malicious and sanctioned addresses, whether they hold exploit proceeds or run fraud and drainer infrastructure. The same checks cover Quick Swap, Polyester’s route for turning an asset on one chain into a different asset delivered on another.

Polyester does not require identity checks, which protects its traders’ privacy and can also attract malicious actors looking to move illicit funds. Blockaid’s Address Scanning stops those funds on arrival, with no added step for legitimate traders. For the active traders, trading firms, and apps that route funds through Polyester, that protection comes with the exchange, from a team that screens every deposit and withdrawal as standard practice.

The Partnership: Screening Built Into Deposits and Withdrawals

Polyester’s design makes deposits and withdrawals the natural place to screen. Polyester generates a deposit address for each supported chain on the trader’s behalf, and every asset enters through one of them, where Zipper verifies the source-chain transaction and mints the Zipped Asset. Assets leave only through a withdrawal flow that Zipper validators review before anything reaches the destination chain. Everything in between, from order matching to lending, happens on Polyester Chain against balances that were already cleared at deposit. Checking those two points covers everything that trades on Polyester and never slows trading, which Polyester runs at a P99 latency of 1 millisecond.

Polyester already protects accounts with MFA, GuardSigner for whitelist changes, and withdrawal whitelists. Blockaid’s Address Scanning checks the other side of every transfer, the wallet a deposit comes from or a withdrawal goes to, and returns its verdict in under 300 milliseconds inside the deposit and withdrawal flow itself, with no extra step for the trader. The scan takes only an external address as input, so orders and balances keep the privacy Polyester is committed to.

On an exchange with no KYC by design, timing matters as much as the check itself, since a list refreshed on a schedule is already out of date when a deposit arrives. Blockaid labels addresses from live threat intelligence gathered across the industry-leading wallets and exchanges it protects, so a wallet newly identified as malicious is caught in real time. Polyester decides which verdicts block, so the controls follow its own risk policy.

Learn more about Blockaid for Compliance →

Address Scanning: Real-Time Verdicts Before Funds Move

Here is how Blockaid’s Address Scanning runs inside Polyester:

• Screening on deposit - When funds arrive at a chain-specific deposit address, the sending address is scanned before Zipper creates the Zipped Asset and the Funding Account credits the Unified Asset. A deposit from a wallet Blockaid has flagged never becomes a balance that can be traded, lent, or withdrawn.
• Screening on withdrawal - The destination address is scanned before the withdrawal flow submits the transfer to the destination chain. Polyester cannot be used as an off-ramp to a flagged wallet, and a clean withdrawal moves through unchanged.
• Verdicts with reasons - Every scan returns Benign, Warning, or Malicious along with the specific features behind the result, such as a sanctioned entity, exploit proceeds, scam infrastructure, or address poisoning. The team reviewing a flag sees why it fired, which keeps the review fast and defensible.
• Coverage across EVM and non-EVM chains - Address Scanning applies chain-specific logic across the EVM networks and Solana that Polyester supports, with verdicts returned well inside the time a deposit spends waiting for block confirmations.

Learn more about the Blockaid platform →

Looking Ahead: Cross-Chain Trading

Demand for cross-chain trading is visible across the industry, with more than $45 billion moving between chains in the past 30 days. Blockaid’s 2026 Fund Recovery Threat Landscape found that stolen funds began moving a median of 17 minutes after an exploit, and that decentralized exchanges were typically the first venue attackers reached, where a swap turns a freezable stablecoin into a native coin no issuer can touch. Nearly every dollar frozen or returned in that dataset came through a control built into the protocol or the chain before the incident. 

As more of that volume lands on exchanges like Polyester, more of those transactions run through Blockaid’s Address Scanning. Polyester pairs the speed and simplicity of a centralized exchange with the custody model of a DEX, and screening every deposit and withdrawal keeps that pairing intact while keeping out the funds that would put it at risk. Blockaid’s View on Security puts protection at the point where value changes hands, and Polyester is opening cross-chain trading on an exchange that meets that standard from its first deposit.

Learn more about Blockaid’s View on Security →

About Blockaid

Blockaid is the onchain security platform trusted by the largest companies operating in Web3. Built by veterans of elite intelligence and cybersecurity units, Blockaid provides end-to-end protection for financial institutions, protocols, and end users, combining direct wallet and dApp integrations with real-time monitoring, detection, and response across smart contracts, infrastructure, and externally owned accounts. Since 2025, Blockaid scanned over 6.3 billion transactions and blocked 585 million attacks. Blockaid is the security infrastructure behind Coinbase, MetaMask, Uniswap, Safe, and dozens of the most widely used platforms in the industry.

Learn more at Blockaid.io, and follow us on Twitter and LinkedIn.