Guardblock is Bitcoin resilience infrastructure; a collaborative security vault designed to survive mistakes, time, and human failure. Fearless Bitcoin.
Joined March 2026
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Guardblock is here and now available in Australia. Protection from lost keys, theft and the unexpected.
Built by the team behind Hardblock, Australia's longest-running Bitcoin-only exchange, securing Bitcoin since 2014 with a zero-loss track record.
Holding Bitcoin in your SMSF is a long game. Your custody needs to last as long as your fund does.
With a Guardblock vault:
✓ Your fund’s Bitcoin sits in its own vault, with its own billing, separate from your personal Bitcoin
✓ No single key can move it, not even ours
✓ Recovery paths keep it accessible if a key is lost or a trustee passes away
Read our full guide for SMSF trustees: guardblock.com/blog/guardblo…
👉 Book an obligation free call: calendly.com/hardblock-excha…
Using Guardblock is always your choice.
Our service makes it easy to get in and easy to get out.
You stay because it works, not because you’re stuck.
For a limited time, lock in 50% off Guardblock fees for your first 2 years:
✓ 0.1% a year instead of 0.2%
✓ Even lower on balances over $3M AUD
✓ No setup fees, no withdrawal fees, no lock-ins
Just a simple fee on the Bitcoin you protect. Lock it in while the offer lasts.
Want to see how it works? Book an obligation free call with our team.
👉 calendly.com/hardblock-excha…
It’s one of the hardest problems in Bitcoin.
Share your seed phrase and you risk losing everything today. Keep it secret and your family could lose everything tomorrow.
We found a way to solve both. 👇
Your recovery paths are built on Bitcoin timelocks, measured in blocks on the timechain. 🟧
They only become available if you don’t refresh your vault:
✓ After about 13 months of blocks, your key alone can move your Bitcoin
✓ After about 15 months of blocks, Guardblock can help you recover it
Each time you refresh your vault, the countdown starts again. Your recovery paths stay closed while you’re active, and ready if you’re not.
No calendars. No company clocks. Just the timechain.
Want to see how it works? Book an obligation free call with our team.
👉 calendly.com/hardblock-excha…
Most people choose between two risks.
Leave your Bitcoin on an exchange, and someone else controls it.
Hold it yourself with one seed phrase, and one mistake can cost you everything.
Guardblock removes the trade off.
Every everyday transaction needs two signatures: yours and ours. You approve it on your own hardware wallet. We co-sign.
What that means for you:
✓ We can’t move your Bitcoin on our own
✓ One stolen key isn’t enough to move it either
✓ If we ever disappear, your recovery path still opens
Enforced by Bitcoin. Not by us.
Want to see how it works? Book an obligation free call with our team.
👉 calendly.com/hardblock-excha…
Multisig is the gold standard for securing Bitcoin.
The catch? Most people never set it up because it feels like a weekend project.
We made it a 15 minute one.
Ledger devices sold through a reseller in Southeast Asia were found with hidden implants designed to steal recovery phrases, with more cases reported across Asia and Europe.
So we opened up our own. 🧵
If you bought a hardware wallet from a reseller, a marketplace or second hand, it’s worth playing it safe.
Move to a new device bought directly from the manufacturer, with a fresh seed.
This is why we built Guardblock. Everyday spending needs your key plus our co-signature, so one compromised device isn’t the end of your stack.
Full breakdown on our blog 👇
guardblock.com/blog/ledger-s…
Guardblock is built by the team behind @HardBlockBTC, securing Australians' Bitcoin since 2014.
Same team. Same focus on security.
Without a plan, your Bitcoin could be lost forever.
Guardblock builds inheritance into the vault, giving your family a clear path to the Bitcoin you worked so hard to stack and protect.
Every spending path is a branch in a Taproot miniscript policy, enforced by Bitcoin consensus, not by us.
Our Vault Architecture Design lays it all out. The multiple-key design, the exact miniscript and the timelocks behind every vault.
Read it, check it and hold us to it.
Practice Vaults are now live.
Have a play with timelocks. Set up a vault with a few dollars of real Bitcoin, watch the timelocks open and rehearse your recovery in hours, not months.
Test the safety net before you need it.
A guaranteed exit that doesn't depend on anyone, including us.
The first timelock opens after ~13 months, enforced by Bitcoin's consensus rules, block by block.
Rolling over refreshes the timelocks, so the safety net stays one.
Bitcoiners get it. Our customers love it.
