bigwallet.org

What It Is

Big is a self-custodial Solana 2FA wallet built around the idea of “two keys, one wallet.” According to the site, every Solana transaction must be confirmed and signed by both the browser extension and the mobile app. It emphasizes no seed phrases, no single point of failure, and no account requirement. It is not an exchange, and the page does not show built-in trading, fiat on/off-ramps, or derivatives features. It is better understood as a security-focused management tool for Solana assets.

Core Capabilities and Security Design

Big’s main differentiator is its security model. Traditional wallets rely on a single private key or seed phrase; once compromised, funds may be lost outright. Big uses a dual-approval mechanism across the extension and the phone, meaning an attacker would likely need to compromise both sides to complete a transfer. Onboarding is based on Passkey and protected by Face ID, Touch ID, or a security key, reducing the risk of seed phrases being captured via screenshots, handwritten backups, or phishing. For recovery, the page mentions that “any two of three keys” can atomically replace a device on-chain, with timelocked on-chain recovery, avoiding reliance on customer support tickets. Before signing, both devices display relevant transaction details and flag dangerous instructions, helping reduce blind-signing risk.

Pricing and Feature Boundaries

The page only mentions “Free for indie devs,” “Open-source program,” “Enterprise,” and a Pricing entry point, but does not provide specific prices, plan details, on-chain fees, or enterprise service scope. For now, it is only possible to conclude that there is a free option for indie developers, while enterprise plans may require custom pricing. The main content does not mention supported asset coverage, token swaps, NFTs, staking, cross-chain functionality, fee structure, insurance, or audit information.

Pros and Cons

The main advantage is a clear security design: dual-device signing, no seed phrase, Passkey, biometrics or security keys, on-chain recovery, and dangerous transaction warnings all aim to reduce private-key leakage and blind-signing risks. The downside is limited disclosure. It is only clearly positioned for Solana; if users need a multichain wallet, fiat crypto purchases, order matching, leveraged contracts, or custodial support-based recovery, the page does not show those capabilities. Dual-end signing also means everyday operations require one more step than a typical hot wallet, so users need to balance convenience against security.

Who It’s For and Access from China

Big is better suited to individuals, indie developers, team treasuries, or frequent Solana users who care strongly about asset security and worry about phishing. It is not ideal for beginners looking for one-stop trading, fiat deposits, or multichain asset management. The main text provides no information about access from mainland China, and payment methods are not disclosed. If access is restricted or ecosystem compatibility is insufficient, users can compare it with Phantom, Backpack, or Solflare, or use hardware wallets such as Ledger as an alternative security approach.