Hold BOB (Build on Bitcoin) (BOB) in a wallet you control
BOB · BOB + 2 more chainsLooking for a BOB (Build on Bitcoin) wallet? Zypto App is not one yet. BOB is not among the 20+ chains it has integrated, so BOB cannot be held, swapped or used as payment there. What Zypto does cover, and how to change that, is below.
BOB (Build on Bitcoin) runs on the BOB network, which isn't integrated in Zypto App yet. Request BOB on X and we'll prioritize adding it so you can hold and swap BOB (Build on Bitcoin).
Request BOB in Zypto App
BOB and Zypto App: where things stand
BOB is not integrated in Zypto App yet, so BOB cannot be held, swapped or spent in the app.
Zypto App is a non-custodial wallet for 20+ integrated chains: hold your own keys, swap through on-chain DEXs, connect to dApps, and use your crypto for real-world spending through the Zypto Premium VISA Card, gift cards, mobile top-ups and bill pay.
New chains are added as we reach them on the roadmap and as we see demand. Telling us on X is the fastest way to move BOB up the queue.
BOB is native to BOB, which is not integrated in Zypto App yet. We will integrate it as we reach that point on the roadmap and as we see community interest.
In the meantime, bridged and wrapped versions of BOB on the chains below are integrated, so you can hold and swap those in the app today.
BOB (Build on Bitcoin) (BOB) and Zypto App, stated plainly
Zypto App has not integrated BOB, so BOB cannot be held, swapped or used as a payment method there today. Saying that plainly on this page is better than letting you download the app and find out.
What the app does cover is 20+ integrated chains, with non-custodial keys generated on your device, in-app DEX integrations for swaps across roughly 24,000 assets, WalletConnect for dApps, and a Zypto Premium Visa Card you can load from what you hold. If any part of your portfolio sits on Ethereum, Solana, Polygon, BNB Chain, TRON or the other integrated chains, Zypto App is worth having alongside your BOB (Build on Bitcoin) wallet.
Integration order comes from our roadmap and from community demand, and demand is the part you can move. A public request is counted.
Looking for a BOB (Build on Bitcoin) wallet?
Start with a wallet that supports BOB, because BOB lives there and Zypto App has not integrated it. Worth knowing for later: the request below is counted, and the status block above is the exact picture of what Zypto does with BOB on every chain we could resolve.
Where to go from here
Check the detail
The status block above lists every chain BOB lives on and what Zypto supports on each one.
Ask for BOB
One public post tells us this matters to you. Community demand is one of the inputs to integration order.
Use the app for the rest
20+ chains, non-custodial keys, in-app swaps and a Premium Visa Card. Ready for BOB when BOB lands.
How Zypto App handles your keys
Zypto App is non-custodial for every asset it supports. Private keys are generated and stored on your device, Zypto never has access to your funds and every transaction is signed locally. For account access, every user sets a PIN with optional biometric security (fingerprint or face recognition). You can also filter your wallet to show only verified tokens, protecting you from random airdrops or unsafe assets. For offline hardware wallet security, pair with the Vault Key Card, card-based cold-wallet hardware that signs transactions over NFC, keys never touch the internet.
What is BOB (Build on Bitcoin)?
BOB, short for Build on Bitcoin, is a hybrid Layer 2 network that aims to bring decentralized finance to Bitcoin while keeping Ethereum tooling. It is built on the OP Stack and is EVM compatible, so developers can write standard smart contracts and applications. Its mainnet went live in 2024, and BOB joined Optimism's Superchain later that year as a member of that group of OP Stack chains. The project's goal is to let people put Bitcoin to work in DeFi without giving up custody to a centralized intermediary. It uses a BitVM based design for bridging BTC, and a later phase adds Bitcoin staking to provide finality. The BOB token arrived in late 2025 through a token generation event. It is issued on the BOB network with a fixed supply, and it is used for governance, staking, and network utility. As a newer chain still rolling out parts of its roadmap, BOB is best understood as an evolving project rather than a settled one. You can track the BOB price and keep BOB in a self-custody wallet that you control.
What Zypto App does today
Zypto App connects crypto to real-world spending across the chains it has integrated. Here is what the rest of the product does while BOB is not one of them.
Vault Key Card cold storage
Card-based cold-wallet hardware. NFC-tap to sign transactions for the assets Zypto supports, keys never touch the internet.
Vault Key CardUse a Crypto Visa Card
Load the Zypto Premium Visa Card with crypto. Physical and virtual cards, use them wherever Visa is accepted.
Crypto cardsPay bills with crypto
Settle utility bills and mobile contracts with billers worldwide, paid with crypto from your Zypto wallet.
Bill payBuy gift cards with crypto
Gift cards from popular brands, paid with crypto. Settle in-app, redeem instantly.
Gift cardsTop up any phone
Send mobile credit across many countries in seconds. Pay with crypto, recipient gets local airtime.
Mobile top-upsCross-chain swaps
Swap across 24,000+ assets and 1,000,000+ cross-chain routes, on every chain Zypto has integrated. All in-app, all in two taps.
Multichain walletPay with crypto
Zypto App supports 100+ cryptocurrencies for card loads, mobile top-ups, bill pay and gift cards. Swap any asset into a supported coin in-app, all in a few taps.
Zypto PayHold any of these alongside BOB (Build on Bitcoin)
Cross-chain swaps move value between any of these, on the chains Zypto has integrated.
664+ dedicated wallet pages
BOB (Build on Bitcoin) wallet FAQs
What's the best BOB (Build on Bitcoin) wallet app?
That depends on what you want to do with your BOB, and Zypto App is honest about its part: it cannot hold BOB yet, so it is not the answer for this one. For a wallet that can, you need one that supports BOB. If the rest of what you hold sits on the 20+ chains Zypto has integrated, it keeps those non-custodially, swaps between them, connects to dApps and turns the value into real-world spending.
Is Zypto App non-custodial?
Yes. Your private keys are generated and stored on your device for every asset Zypto App supports. Zypto never has access to your funds, and every transaction is signed locally before it reaches the network.
How do I use crypto for real-world spending with Zypto Premium Visa Cards?
When you load the card in Zypto App, your crypto is converted into USD. Conversion happens at load, not at the checkout, so you can lock value in, avoid volatility and pay wherever Visa is accepted, subject to eligibility and applicable limits.
Can I swap BOB (Build on Bitcoin) in Zypto App?
Not yet. BOB is not integrated in Zypto App, so BOB cannot be swapped there. Zypto App swaps across 20+ integrated chains, and telling us on X is the fastest way to move BOB up the queue.
How do I back up my BOB (Build on Bitcoin) wallet?
During setup, Zypto App generates a 12-word recovery phrase. Write it down and store it offline somewhere safe. For offline hardware wallet security, pair Zypto App with a Vault Key Card, the card-based cold-wallet hardware that signs transactions over NFC without exposing your keys to the internet.
Is Zypto App available in my country?
The wallet itself is available globally on iOS, Android and web. Some features (in-app buying, the Zypto Premium Visa Card) vary by region. See what's available where you are on our <a href="/spend-crypto/">Spend by Country</a> page.
Is Zypto App free?
The app is free to download and use. Standard network fees apply to on-chain transactions. Card and bill-pay services carry transparent transaction fees published in the app.
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