The most secure, compliant, and integrated bridge connecting millions of users to the decentralized world.
The current Web3 user journey is riddled with complexity, risk, and friction. Many users trust centralized platforms (Web2.5) but struggle with the self-custody risks (Web3). The Coinbase Extension is designed to eliminate this dilemma. It acts as a **trusted interaction layer**, allowing users to seamlessly sign transactions with keys secured by Coinbase's institutional-grade infrastructure, providing the utility of a non-custodial wallet without the primary security burden.
Our addressable market is defined by the **100+ million verified Coinbase users** and the broader global Web3 interaction base, projected to reach **1.5 billion users by 2030**. The extension immediately targets the high-value segment: users already holding crypto who are hesitant to use dApps due to security fears. By bundling enhanced fraud protection and regulatory compliance (discussed in Section 3), we anticipate a 30% conversion rate from high-net-worth exchange users to active dApp participants within the first year.
$2.5T
Projected Web3 Transaction Volume (2027)
92%
Reduction in Key-Compromise Risk vs. Hot Wallets
35%
Target MoM Growth in DApp Interaction Count
Combines funds from **Coinbase Exchange and Coinbase Wallet** into a single, cohesive interface. Allows users to switch between custodial and self-custodial accounts for signing, all within the same browser context.
Before signing, the transaction is run through a pre-screening simulator. Users see the **exact balance change and resulting asset ownership** (tokens/NFTs) before committing, mitigating risks of signature fraud.
Integrated asset viewing for all major token standards (ERC-20, ERC-721, ERC-1155). Displays high-resolution **NFT metadata and floor price estimates** pulled directly from the Coinbase NFT platform data.
Quick access to fiat-to-crypto conversion and small trading actions directly from the extension popup. For large trades, a **secure single sign-on (SSO)** link takes the user directly to the advanced trading platform.
Our design philosophy hinges on **progressive disclosure**, presenting complex blockchain data in digestible, human-readable formats. Transaction signing modals use clear, color-coded warnings (Red for high risk, Yellow for warning, Green for safe/trusted contracts) and clearly specify the **"gas fee ceiling"** and **"maximum token allowance"** being granted.
The entire user interface is built on React components optimized for performance, ensuring the popup opens in under 200ms on most modern browsers. We adhere strictly to WCAG 2.1 AA standards for contrast and font sizing, providing a universally accessible product for all users.
The core security advantage is the **separation of signing authorization from private key custody**. The browser extension *never* holds the private keys. It communicates transaction requests to a secure Coinbase microservice over a **mTLS-encrypted tunnel**. The private key is housed within a **Hardware Security Module (HSM)**, ensuring it is physically and logically isolated from the public internet and the user's local machine environment.
Compliance is non-negotiable. Every transaction is monitored by Coinbase's existing **AML/KYC framework**. The extension includes an automatic, configurable **Transaction Volume Limit (TVL)** based on user account verification status, preventing large, unauthorized transfers.
The extension actively checks the destination address against a constantly updated **list of known scam addresses and blacklisted contracts**. If a match is found, the transaction is blocked, and the user is provided a clear, non-dismissible warning message explaining the risk. This proactive defense is critical for maintaining user trust in the dApp ecosystem.
The core logic is executed in a **Web Worker** thread to prevent UI blocking. The use of **TypeScript** and **React Hooks** ensures clean, maintainable code. The minimal bundle size ensures fast download and installation across all supported browsers (Chrome, Firefox, Edge, Brave).
The extension architecture is fully decoupled from the Coinbase Exchange monolith. It communicates with a dedicated, **API Gateway** microservice designed for high throughput and low latency. This allows the system to scale independently to handle billions of API calls per week during peak crypto market activity.
Initial load performance is optimized for speed. Average signing request latency is consistently measured at less than **450 milliseconds (P99)** globally. The extension maintains low CPU consumption to preserve laptop battery life and overall system performance.
Initial public launch focusing on core dApp connectivity and the non-custodial interface to custodial funds. Emphasis on stability and rigorous bug testing in the field.
Expanding chain support and integrating advanced trading functions directly into the extension workflow.
Moving toward full ecosystem utility, including DeFi, Staking, and enterprise solutions.