FAQ

No, Flip never holds your funds. Every swap is non-custodial: you sign each transaction yourself in your own wallet (MetaMask, Phantom, Sparrow, etc.), and your private keys never leave that wallet.

Flip is an interface to an on-chain settlement protocol. If something fails, the protocol automatically refunds you to your refund address — enforced by smart contracts, not by Flip's good intentions. See the Trust & security page for the full mechanism.

No. Flip doesn't collect identity information, doesn't require an account, and doesn't restrict access by region beyond what your wallet provider may enforce. The underlying settlement network is on-chain code, not a regulated entity.

You're responsible for ensuring use of Flip is lawful in your jurisdiction; see the Terms.

Typical settlement times by corridor:

• EVM to EVM (e.g. ETH → USDC on Base): 1–3 minutes
• EVM/SOL to native Bitcoin: 5–10 minutes (gated by Bitcoin block confirmation)
• Solana involved: usually under a minute
• NEAR involved: usually under a minute

Bitcoin's ~10-minute average block time means BTC corridors can't go faster than that, regardless of which interface you use.

If solvers can't fill your order before the deadline, or if a fill fails partway through, the protocol automatically refunds your source tokens to the refund address you specified (defaults to your recipient address). No action required from you.

Failures are rare for major corridors. The most common cause is sending less than the quoted amount on manual BTC/SOL deposits — see the next question.

For Bitcoin and Solana sources, you send funds yourself from your own wallet. If you underpay, the protocol marks the swap as INCOMPLETE_DEPOSIT and waits — you can top up the missing amount within the deadline window, or the protocol will refund you after the deadline.

Overpaying may not be detected by the network. Always send the exact quoted amount. Flip's deposit instructions highlight this with a warning before you send.

Ethereum / Arbitrum / Base: MetaMask, Rabby, Coinbase Wallet, Trust Wallet, WalletConnect-compatible wallets, Ledger via wallet apps.

NEAR: MyNearWallet, HERE Wallet, Meteor, Sender, Bitte — all via NEAR Wallet Selector.

Bitcoin and Solana: currently no direct wallet connection. You receive a deposit address and send from your own Bitcoin or Solana wallet (Sparrow, UniSat, Xverse, Phantom, Solflare, Ledger Live, etc.). Direct wallet integration for BTC and SOL is on the near-term roadmap — see /about.

Chains: Bitcoin (native L1), Ethereum mainnet, Arbitrum, Base, Solana, NEAR.

Tokens: the token dropdown shows everything the underlying settlement network supports for that chain at any given moment. Major assets (BTC, ETH, SOL, NEAR, USDC, USDT) are reliably available. Less-liquid tokens may not have routing on every corridor.

One flat protocol fee, displayed in every quote before you execute and shown on the welcome modal. The fee comes from an environment variable, so the displayed claim can never drift from what's actually charged.

On top of the protocol fee, you pay the destination network's gas / transaction fee (Bitcoin tx fee, Ethereum gas, etc.). These are outside Flip's control and are visible in the quote's "Effective cost" line. There are no spreads or hidden markups.

Bitcoin's per-transaction network fee is roughly fixed (~$1–2 regardless of swap size). On a $10 BTC swap, that fee is 10–20% of your value. The protocol fee itself is tiny — it's the chain's own fee that dominates small swaps.

Flip flags this automatically with an in-quote warning when your effective cost crosses ~5% and suggests alternatives (larger amount, cheaper destination chain like Base or Solana). For meaningful swap sizes (above ~$100 for BTC corridors) the effective cost drops to under 1%.

Before you send the deposit: yes — close the page, your quote expires, no funds move. Quotes are valid for ~5 minutes; if you don't deposit by the deadline, no swap happens.

After you send the deposit: no, but the protocol's deadline enforces a backstop. If solvers don't fill within the window, you're refunded automatically.

Your swap continues. It lives on the settlement network, not in your browser tab. Come back any time and look it up at /status by pasting your deposit address — works from any device.

Flip also keeps a local record of swaps started on this device in localStorage, accessible from the history icon in the header.

Minimum:there's no hard floor, but small swaps lose disproportionate value to fixed network fees. Flip warns you when this is likely. Practical minimum for BTC corridors: ~$50–100 of value.

Maximum: bounded by available solver liquidity for the corridor at any given moment. The quote response will fail if your size exceeds available depth.

vs THORSwap:THORSwap uses THORChain's MPC vaults for cross-chain settlement; Flip uses NEAR Intents (solver-network) settlement. THORSwap is the incumbent for native BTC swaps with several years of operating history; Flip is newer with cleaner UX. See /compare.

vs Jumper / Squid / LI.FI:those are EVM-only or EVM-plus-Solana aggregators that route across bridges. Flip includes native Bitcoin and doesn't use traditional bridges.

Flip is built by Myer (@myer-2000). Solo project. See /about for the full story.

Everything routes through one contact form — pick a category (general, partnership, press, security, bug report) and the message lands in the right inbox. For security disclosures specifically, also read /security for the disclosure process before reporting.