Store the Bitcoin you acquire through Auto-Buy and Boost in SmashFi’s Custody Safe,
a non-custodial wallet where you hold the private keys.
This means you have complete control over your Bitcoin, free from the risks of rug-pulls and hacks.
Automate, Boost and Secure your Bitcoin with
Custody Safe!
At SmashFi, we believe in the power of self-custody, especially when it comes to Bitcoin.
True ownership means holding your private keys, giving you complete control of your assets.
However, we understand that traditional self-custody comes with challenges:
Complex Seed Storage
Safeguarding seed phrases can be a hassle.
Risk of Loss
Losing access to your wallet means losing your Bitcoin forever.
High Withdrawal Fees
Transferring funds can often incur expensive fees.
Why Choose SmashFi's Custody Safe?
Own Your Bitcoin
Full Control,
No Middlemen
Maintain full control over your Bitcoin,
secured by MPC technology,
without the need for seed phrases.
Fee-Free Bitcoin
Self-Custody
Earn points by stacking sats with Auto-buy on SmashFi. Redeem them for zero-fee Bitcoin transfers from your SmashFi account to your private wallet.
Share Bitcoin
Access with
People You Trust
Don’t hold your Bitcoin alone.
With SmashFi's Custody Safe, you can add family or friends to your wallet by giving them a share of the key on their phones.
Your Bitcoin stays safe and can still be retrieved by your loved ones — even if something happens to you.
It’s self-custody,
made safer together.
Backup Key for Easy & Safe Recovery
Lost your phone?
No problem. With your Backup Key, you can still recover your Bitcoin anytime — without stress.
And unlike traditional wallets, this key isn’t your private key. Even if someone gets hold of it, they can’t access your wallet.
No seed phrases, no panic.
Just simple, secure recovery.
Stack Bitcoin
Smarter,
Withdraw on Your
Terms
Accumulate as much Bitcoin as you want in SmashFi's Custody Safe, then transfer it in bulk to your hardware wallet—saving on-chain fees and avoiding redundant transactions.
Accumulate as much Bitcoin as you want in SmashFi's Custody Safe, then transfer it in bulk to your hardware wallet—saving on-chain fees and avoiding redundant transactions.
Q. What is Custody Safe?
Custody Safe is SmashFi's Custody Safe, a non-custodial Bitcoin wallet solution powered by Fireblocks Embedded Wallet (EW) technology. It gives users full control over their Bitcoin by allowing them to hold their own private keys, eliminating risks associated with exchanges or third-party custodians. Users can connect their SmashFi account to the SmashFi's Custody Safe app via a QR code scan, enabling seamless and secure Bitcoin management.
Q. Are there any fees for transferring Bitcoin into Custody Safe?
Transferring Bitcoin into Custody Safe is zero-fee only when the Bitcoin is moved from your SmashFi account to your private wallet. SmashFi provides a limited number of fee-free transfers for users who acquire Bitcoin through Auto-buy or Boost, encouragingcost-efficient self-custody. These zero-fee transfers are limited per period (weekly/monthly), ensuring users can DCA and self-custody efficiently without excessive fees.
Transfers from external wallets may still incur standard blockchain network fees.
Q. How does Custody Safe ensure security for my Bitcoin?
Custody Safe secures your Bitcoin using a 2-of-2 Multi-Party Computation (MPC) signature scheme, a more advanced alternative to traditional Multi-Signature (Multi-Sig) wallets.
🔒 How it Works:
Instead of generating a single private key, MPC splits it into two separate cryptographic key shares. 1. One key share is securely stored on your device.
2. The other key share is encrypted and stored on Fireblocks’ secure servers.Every transaction requires both key shares to sign, ensuring that no single party—including SmashFi or Fireblocks—can unilaterally control your Bitcoin.
2. The other key share is encrypted and stored on Fireblocks’ secure servers.
✅ Why 2-of-2 MPC is Safer:
1. Eliminates Single Point of Failure – No single entity can access or control your Bitcoin.
2. More Resilient Against Hacks – No single entity can access or control your Bitcoin.
3.No On-Chain Footprint – Unlike Multi-Sig, which publicly exposes multiple signers on the blockchain, MPC keeps everything off-chain, reducing attack risks.
4.Simplified Wallet Recovery – If you lose your device, your backup key (stored safely by you) allows for secure wallet restoration without needing SmashFi’s intervention.
Q. Why should I use Custody Safe instead of keeping Bitcoin on an exchange?
When Bitcoin is stored on an exchange, you don’t truly own it—the exchange does. This means your Bitcoin is at risk of being frozen, hacked, or lost if the platform experiences financial issues or security breaches. Custody Safe ensures that Bitcoin is withdrawn from SmashFi and stored securely in your own non-custodial wallet, outside the reach of third parties.
Unlike major exchanges, SmashFi does not hold your Bitcoin—only you do.
Unlike major exchanges, SmashFi does not hold your Bitcoin—only you do.
Q. What happens if I lose access to my Custody Safe wallet?
If you lose access to your Custody Safe wallet, you can only restore it if you have your backup key. When setting up SmashFi's Custody Safe, a backup key (e.g., a1B2c3D4a1b2C3d4A1b2C3==) is generated. Neither SmashFi nor Fireblocks can recover your Bitcoin without it.
✅ If you have your backup key: You can restore your wallet on a new device and regain access to your Bitcoin.
❌ If you lose your backup key: Your Bitcoin is permanently unrecoverable.
To prevent loss, store your backup key securely. This ensures you maintain full self-custody while eliminating seed phrase complexities.
Q. Can I access Custody Safe across multiple devices?
Yes — SmashFi’s MPC wallet allows you to join multiple devices to one wallet. This means you can easily access your Bitcoin from more than one device, whether it’s your second phone, tablet, or computer.
Even if you lose your main phone, you can still recover your wallet using a second device that’s already joined — no stress, no downtime. You can also join trusted family members’ or friends’ devices to your wallet, so your Bitcoin is always safe and accessible, even in emergencies.
Even if you lose your main phone, you can still recover your wallet using a second device that’s already joined — no stress, no downtime. You can also join trusted family members’ or friends’ devices to your wallet, so your Bitcoin is always safe and accessible, even in emergencies.
Q. What makes Custody Safe different from other wallet solutions?
Custody Safe offers a fundamentally different approach to Bitcoin self-custody—one that is automated, cost-efficient, and institutionally secure, setting it apart from both traditional wallets and exchange-based custodians.
- Unlike typical wallets, Custody Safe is directly connected to SmashFi’s platform, enabling automated Bitcoin accumulation and self-custody.
- Bitcoin acquired through Auto-buy or Boost is seamlessly transferred to your wallet, removing the need for manual withdrawals.
- Unlike Multi-Sig wallets, Custody Safe’s MPC (Multi-Party Computation) security ensures that key shares are never exposed on-chain.
- Transactions require two cryptographic key shares (one on your device, one encrypted on Fireblocks), making it more resilient to hacks than both traditional wallets and exchange custodians.
- Regular self-custody transfers come with on-chain fees, but Custody Safe enables zero-fee withdrawals for Bitcoin acquired through SmashFi’s features, reducing long-term costs.
Q. Can I still withdraw my Bitcoin from Custody Safe?
Yes, you can withdraw your Bitcoin from Custody Safe to any external wallet at any time. Custody Safe is designed to give you full control and flexibility, allowing you to move your Bitcoin whenever and wherever you need.
Q. What blockchains and assets does Custody Safe support?
Custody Safe is a Bitcoin-focused service with limited blockchain support. It exclusively supports Bitcoin (BTC) and USDT (TRC-20), allowing users to securely store and manage these assets within their private wallet.
Q. What is a Backup Key, and what happens if I lose it?
Q. How do I set up and access Custody Safe?
To use Custody Safe, you need to link it to your SmashFi account:
1. Download the SmashFi app (Custody Safe).
2. Log into the SmashFi website (smashfi.me) on your browser.
3. Scan the QR code from the website using the SmashFi's Custody Safe app.
Once linked, your private keys are generated securely on your device using Fireblocks’ Embedded Wallet technology. From there, you can withdraw Bitcoin from SmashFi into your personal wallet without fees (if eligible), and manage your holdings with full self-custody.
Q. How does Custody Safe integrate with SmashFi’s Auto-buy and Boost features?
SmashFi's Custody Safe is directly connected to the SmashFi platform, enabling seamless automated self-custody. When users purchase Bitcoin through Auto-buy or grow their holdings using Boost, they accumulate SmashFi points, which can be redeemed for zero-fee withdrawals into their Custody Safe wallet.
This ensures that users:
✅ Effortlessly accumulate Bitcoin without worrying about transfer fees.
✅ Securely withdraw Bitcoin into self-custody instead of leaving it on an exchange.
✅ Have full control over their BTC without relying on third-party custodians.
✅ Securely withdraw Bitcoin into self-custody instead of leaving it on an exchange.
✅ Have full control over their BTC without relying on third-party custodians.
Unlike other platforms where Bitcoin remains exposed to exchange risks, SmashFi guarantees that your Bitcoin always ends up in your private wallet.
Q. If someone else accidentally gets my Backup Key, can they steal my Bitcoin?
No, they can’t.
Even if someone gets hold of your Backup Key, they won’t be able to access your Bitcoin. Here’s why:
Even if someone gets hold of your Backup Key, they won’t be able to access your Bitcoin. Here’s why:
1. Your Backup Key alone isn’t enough. The SmashFi app is required to connect with its secure system to actually use your key and recover your wallet. Without the app and its security steps, the Backup Key is useless.
2. Extra Security Layers. Even if someone tried to make a transaction, SmashFi’s system checks every request to block suspicious activity before anything gets approved.
3. Transaction Protection. Every transaction still requires a digital signature from your device — which means SmashFi can double-check the transaction before it goes through.
This is different from a traditional Bitcoin wallet’s seed phrase, where anyone who finds the seed phrase has full control over your Bitcoin. With SmashFi’s Backup Key system, your Bitcoin has an added layer of protection — even if your Backup Key ends up in the wrong hands.
By safely storing your Backup Key and using SmashFi’s security features, your Bitcoin stays secure and recoverable.