Blockstream Jade
Connect your Jade to SmashFi via air-gapped QR — no cables, no exposure. Your private keys stay on the device and are never accessible to SmashFi.
Don't have a Jade yet? Get 10% off — or 10% back in Bitcoin.
Buy a JadeCustody Safe
Your Bitcoin. Your hardware wallet.
Connect a supported hardware wallet with SmashFi. Control deposits and withdrawals without ever giving up your private keys.
Custody Safe
Your Bitcoin. Your hardware wallet.
Connect a supported hardware wallet with SmashFi. Control deposits and withdrawals without ever giving up your private keys.
On self-custodySupported wallets
Connect your hardware wallet
Connect your supported hardware wallet to SmashFi. Your private keys stay on your device and are never accessible to SmashFi.
Trezor
Connect your Trezor, the original hardware wallet trusted since 2014. Your private keys stay on the device and are never accessible to SmashFi.
How Custody Safe works
SmashFi for operations. Your wallet for ownership.
Bitcoin you're actively buying or earning on lives in SmashFi. Bitcoin you want to hold long-term lives on your hardware wallet. Move between them at will.
Keys stay with you
Your hardware wallet holds your keys, signs locally, and never exposes them to SmashFi or any third party.
Two-way transfers
Move BTC into SmashFi when you want to put it to work. Pull it back to your hardware wallet when you want to hold.
You decide what's hot
Choose how much BTC stays on SmashFi versus in your wallet. No default sweep, no surprise moves.
Moving Bitcoin
Move BTC when you need it.
Transfer Bitcoin between SmashFi and your hardware wallet. Review every transfer before it moves.
Your WalletSmashFi
Send BTC into SmashFi when you're ready to put it to work.
- 1Connect your walletGenerate a fresh BTC receive address in SmashFi.
- 2Confirm and signReview and approve the transaction on your hardware wallet.
- 3BTC arrives in SmashFiOnce confirmed, your BTC is ready for your SmashFi operations.
SmashFiYour Wallet
Send BTC back to your Jade when you want to hold long-term.
- 1Request withdrawal from SmashFiChoose a saved wallet address or provide a new one.
- 2Review and approveAmount, fees, and destination shown side-by-side before send.
- 3BTC arrives in your walletOnce confirmed, your BTC is back in self-custody.
Security architecture
Built around self-custody.
Hardware-backed signing
Transactions are approved on your physical hardware wallet. Your private keys never touch SmashFi.
Watch-only access
SmashFi can view your balance and prepare transactions, but cannot spend your Bitcoin without your approval.
Every transfer logged
Track the direction, amount, fee, address, and confirmation status of every transfer.
Your Bitcoin stays yours
Bitcoin held in your self-custody wallet remains under your control, independent of SmashFi.
SmashFi × Blockstream
Exclusive Offer
Don't have a Jade yet?
Get 10% off — or 10% back in Bitcoin.
Use our exclusive Blockstream partner link to buy a Jade (or any Blockstream accessories) and choose your benefit at checkout.
10% off the purchase price
Pay less upfront. Applied instantly at checkout.
10% back in Bitcoin cashback
Keep the full price and receive 10% in BTC cashback.
Use code SMASHFI at checkout
FAQ
Custody Safe questions
Custody Safe currently supports Blockstream Jade and Trezor. More wallets will be supported over time.
Own your Bitcoin. Operate it on SmashFi.
Pair your Jade and start moving BTC between cold storage and your active SmashFi account.