Connect your Jade hardware wallet with SmashFi. Control deposits and withdrawals without ever giving up your private keys.
Connect your Jade hardware wallet with SmashFi. Control deposits and withdrawals without ever giving up your private keys.
Connected
On self-custody
Keeping Bitcoin on a platform is convenient. But at some point, the fact that your assets are outside your direct control starts to feel uncomfortable.
SmashFi took that seriously. We believe you should be able to keep the convenience of automation while keeping your Bitcoin in your own wallet.
Custody Safe is the first answer to that.
First supported wallet
Blockstream Jade is an open-source hardware wallet. Your private keys stay on the device. SmashFi has no access to them in any way.
Keep your Bitcoin working on SmashFi, but sweep it to cold storage automatically. Set a target amount, and once your accumulated purchases or yields hit the mark, Custody Safe instantly forwards them to your Jade wallet. Automation meets true ownership.
Coming next
Jade is just the start. We're adding support for more hardware and software wallets over time.
Let us know which wallet you use - It goes straight to the top of the list.
SmashFi x Blockstream
Exclusive Offer
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.
Pay less upfront. Applied instantly at checkout.
Keep the full price and receive 10% in BTC cashback.
Use code SMASHFI at checkout
How Custody Safe works
Bitcoin you're actively buying or earning on lives in SmashFi. Bitcoin you want to hold long-term lives on your Jade. Move between them at will.
Your Jade holds your keys, signs locally, and never exposes them to SmashFi or any third party.
Move BTC into SmashFi when you want to deploy it. Pull it back to Jade when you want to hold.
Pick exactly how much BTC sits in SmashFi versus on Jade. No default sweep, no surprise moves.
Moving Bitcoin
Every transfer is initiated by you, signed on Jade, and visible in the activity log.
Send BTC into SmashFi when you're ready to put it to work.
Send BTC back to your Jade when you want to hold long-term.
Security architecture
All withdrawals are signed on a physical Jade device. Keys never touch SmashFi servers or your browser.
SmashFi can view balances and prepare unsigned transactions only - never spend without your Jade approval.
Activity feed records direction, amount, fee, address, and on-chain confirmation status.
If SmashFi ever became unreachable, your BTC on Jade remains fully usable with any compatible wallet via your recovery seed.
FAQ
Yes. Custody Safe currently supports Blockstream Jade. If you don't have one yet, you can purchase it through our exclusive partner link and get 10% off — or 10% back in Bitcoin.
Pair your Jade and start moving BTC between cold storage and your active SmashFi account.