Crypto infrastructure for exchanges

Custody is existential. A single compromised signing key can drain an entire platform in minutes. Most exchanges know they need segregated hot, warm, and cold wallet tiers, but the real engineering challenge is automating fund flows between those tiers while enforcing signing policies, rate limits, and anomaly detection. Traditional multisig adds operational friction. A key holder on vacation or a lost hardware device can stall withdrawals for hours. The gap between "we have a cold wallet" and "we have resilient custody" is where platforms get breached.

The solution includes layered custody architecture where MPC wallets replace rigid multisig for operational flexibility without sacrificing security. Hot wallets hold only what is needed for the next withdrawal cycle. Warm wallets replenish automatically via policy driven transfers with configurable velocity limits. Cold storage requires threshold MPC authorization with key shares distributed across geographic locations. Every fund movement is logged on chain, enforced by smart contract logic, and visible to your compliance team in real time.

Flash crashes and liquidation cascades are when your infrastructure actually gets tested. A 20% market drop triggers a flood of deposits from arbitrageurs, margin calls from leveraged traders, and a spike in withdrawal requests from panicked users, all hitting your settlement layer simultaneously. If your engine cannot keep pace with your matching engine's throughput, users see stalled withdrawals, stale balances, and a support queue that takes days to clear. One outage during a volatile session can permanently shift volume to competitors.

The solution includes settlement engines designed to match your order book's peak throughput without becoming a bottleneck. Deposits and withdrawals process in parallel across dedicated pipelines. On chain transactions batch dynamically based on gas conditions and queue depth. Internal ledger reconciliation runs continuously against on chain state, catching discrepancies before they compound. The system sheds non critical load gracefully under stress rather than failing across the board. Your operations team monitors withdrawal queue depth, settlement latency, and reconciliation status through real time dashboards with automated escalation alerts.

Every new chain you support adds a unique combination of confirmation times, fee models, address formats, and signing schemes. Bitcoin uses UTXO. Ethereum uses account nonces. Solana requires rent exemption logic. Each integration is a separate engineering effort with its own edge cases, and the operational burden compounds with every listing. Most exchanges end up with a fragile patchwork of chain specific code that is expensive to maintain, slow to extend, and a constant source of deposit crediting bugs.

The system provides a unified asset pipeline that abstracts chain specific logic behind a consistent interface. Deposit detection, confirmation tracking, fee estimation, and withdrawal signing all flow through the same service layer regardless of whether the underlying asset lives on an EVM chain, Solana, Bitcoin, or Cosmos. Adding a new chain or token becomes a configuration change, not a multi sprint engineering project. Your listing team can onboard new assets without needing blockchain engineers in the loop for every deployment.