Ark

Programmable trust vaults for the autonomous age. Dynamic cryptographic verification, quantum-resistant security and non-custodial ownership for agents & humans

[Ark @usearkwallet]

Sound on 🔊

We are sharing a private key that holds all our creator fees, and you will not be able to hack it:

0x1a03b2cdc087975f0f7c96349e3dad2e997d2d57152f8798970796ecb25afa7e

Take the funds if you can. We will show you why you can't.

This wallet owns an ARK vault. We moved our creator fees into the wallet, created the vault, and turned on every security layer we have running today: Face ID, a registered Bluetooth device, a USB key, and geo-location. Then we sent the funds into the vault. Once those layers are on, nothing leaves unless all of them check out.

Here is the vault contract, fully public:
https://t.co/EsNUx9Det3

On a normal wallet, holding that key means holding the money. Whoever copies it first takes everything, from anywhere, in seconds. That is how every wallet works today.

With ARK it does not. You can hold the key, you can call the contract directly, you can do whatever you want with it, and you still cannot move a cent. The key is not enough on its own. You also have to pass the security layers, and you cannot. You do not have my Face ID. You cannot approve from my device, in my location. The key gets you to the door. It does not get you the money.

The funds are real and the key is real. Go ahead and try.

This is ARK. The new standard for self-custody.

The video below shows how to download, set up, and start using the app.

https://t.co/sjrzLXzvSl

[Ark @usearkwallet]

@Shivfreespirit This is our official contract; 0x4bbb622433e594efc554124d3db896b1a5aefba3

[Ark @usearkwallet]

Sound on 🔊

We are sharing a private key that holds all our creator fees, and you will not be able to hack it:

0x1a03b2cdc087975f0f7c96349e3dad2e997d2d57152f8798970796ecb25afa7e

Take the funds if you can. We will show you why you can't.

This wallet owns an ARK vault. We moved our creator fees into the wallet, created the vault, and turned on every security layer we have running today: Face ID, a registered Bluetooth device, a USB key, and geo-location. Then we sent the funds into the vault. Once those layers are on, nothing leaves unless all of them check out.

Here is the vault contract, fully public:
https://t.co/EsNUx9Det3

On a normal wallet, holding that key means holding the money. Whoever copies it first takes everything, from anywhere, in seconds. That is how every wallet works today.

With ARK it does not. You can hold the key, you can call the contract directly, you can do whatever you want with it, and you still cannot move a cent. The key is not enough on its own. You also have to pass the security layers, and you cannot. You do not have my Face ID. You cannot approve from my device, in my location. The key gets you to the door. It does not get you the money.

The funds are real and the key is real. Go ahead and try.

This is ARK. The new standard for self-custody.

The video below shows how to download, set up, and start using the app.

https://t.co/sjrzLXzvSl

[Ark @usearkwallet]

This is one of the most important things happening in in the space right now, and it is not really about Zcash.

An AI just helped find a bug that could have printed a major privacy coin out of thin air. The attacker does not have to be a genius anymore. It just needs a capable model and some patience.

At some point the keys everyone relies on quietly stop being safe.

Both of them break the same assumption. That one secret, one key, one signature should be enough to control everything you own. That was never really safe. It just survived because attacks used to be slow and human.

That time is ending. Money is about to be held and moved by software and agents, not just people typing passwords. You cannot hand an AI agent a seed phrase and call it secure.

So we are building Ark around one idea. No single secret should ever be enough. Your ownership gets checked across who you are, the device you hold, how you behave, where you are, and cryptography built to outlast quantum. If one layer breaks, nothing moves.

We are not pretending all of this is finished today. We are saying it is where everything is heading, and someone has to build the layer that still holds when the old assumptions stop working.

[Frank @frankdegods]

one of the most popular cryptocurrencies (zcash) was just exploited by Opus 4.8

the discussion around moving BTC to post quantum rails needs to happen yesterday

[Ark @usearkwallet]

The agentic economy is being built right now. It needs a security layer. We are building it.

Today, ARK agents can pay over x402, the native payment rail for agents on Base. But with the one thing x402 alone does not give you: limits.

Every payment clears ARK's policy first. A per-call cap. A daily budget. An allowlist. The agent can buy data, call paid APIs, and pay other agents entirely on its own, and still it can never spend past what you set. A runaway or hijacked agent stays bounded.

It is the same principle that guards our vaults, where holding a key is not the same as holding the funds, now extended to how agents spend.

Autonomy with a hard ceiling. Security that holds even when the agent does not.

And this is only the first step. The vault remains the secure base. Private payment rails and deeper x402 integration come next.

ARK. The trust and privacy layer for the agentic economy.

[Ark @usearkwallet]

Two days. The vault still has not been cracked.

Not by humans. Not by agents.

This is what safety on the agentic economic layer should look like, and what it should feel like.

It is why we are building ARK: to set a new standard for the on-chain economy, for humans and autonomous systems alike.

The challenge is still on, try to hack our system! Here's our private-key of our vault / 0x1a03b2cdc087975f0f7c96349e3dad2e997d2d57152f8798970796ecb25afa7e

[Ark @usearkwallet]

Sound on 🔊

We are sharing a private key that holds all our creator fees, and you will not be able to hack it:

0x1a03b2cdc087975f0f7c96349e3dad2e997d2d57152f8798970796ecb25afa7e

Take the funds if you can. We will show you why you can't.

This wallet owns an ARK vault. We moved our creator fees into the wallet, created the vault, and turned on every security layer we have running today: Face ID, a registered Bluetooth device, a USB key, and geo-location. Then we sent the funds into the vault. Once those layers are on, nothing leaves unless all of them check out.

Here is the vault contract, fully public:
https://t.co/EsNUx9Det3

On a normal wallet, holding that key means holding the money. Whoever copies it first takes everything, from anywhere, in seconds. That is how every wallet works today.

With ARK it does not. You can hold the key, you can call the contract directly, you can do whatever you want with it, and you still cannot move a cent. The key is not enough on its own. You also have to pass the security layers, and you cannot. You do not have my Face ID. You cannot approve from my device, in my location. The key gets you to the door. It does not get you the money.

The funds are real and the key is real. Go ahead and try.

This is ARK. The new standard for self-custody.

The video below shows how to download, set up, and start using the app.

https://t.co/sjrzLXzvSl

[Ark @usearkwallet]

ARK AGENTIC BRAIN

Every agent in ARK has a vault. Now, it gets a voice.

Speak to it in plain language. Ask what it holds. Ask what it is allowed to do. Tell it to pay an address, swap a token, act on-chain. It does the work. You stay in command.

And the rule never bends. The agent can only move what your policy allows. It reads. It proposes. Before a single dollar leaves, you approve it.

The agent holds permission, never unchecked power.

Run it your way. Bring your own model key and use the console freely, or hold $50 in $ARK and run on ARK's hosted intelligence, powered by @AnthropicAI.

This is the first utility integrating our token $ARK. It will not be the last.

Why this matters.

An autonomous treasury used to be a script you trusted and hoped. Now it is something you simply talk to, and something that cannot break the limits you set.

Operate capital by conversation. Delegate to an agent that cannot exceed your rules. Autonomy with a hard ceiling, in your own words.

The agentic economy does not run on trusting the agent. It runs on agents that operate inside rules they cannot break.

[Ark @usearkwallet]

Today, AI agents enter the ARK ecosystem.

From the beginning, ARK was built for a world that is already arriving. One where wallets do not belong only to humans, and where a single private key is no longer enough to own anything.

very agent now gets its own vault. It can hold a treasury, pay, swap, and operate on-chain on its own. But it does so the way everything in ARK works, through programmable proof of context and intent instead of a private key. Before an agent can move anything, ARK verifies the rules its owner set: how much it can spend, who it can pay, the limits it lives inside. The agent proposes. ARK's co-signer decides. The key on its own is powerless.

That is the entire idea. Ownership is not a secret you can leak. Ownership is the trust graph around it. So an agent can be jailbroken, prompt-injected, or have its key exposed, and it still cannot break the rules it was given. Its power is bounded by design. The worst it can ever do is what you already allowed.

Private keys made crypto fragile, and they were never going to survive an era of autonomous software holding real money. ARK replaces them with something better suited to it: permission, granted under context, bounded by your rules, and enforced on every action.

This is the trust layer for the AI age. Humans and AI agents, the same sovereign vault, where assets unlock through identity, context, and intent rather than a key anyone can steal.

The agent economy starts here.

Install now: https://t.co/9zov3vUjf5

[Ark @usearkwallet]

Today, AI agents enter the ARK ecosystem.

From the beginning, ARK was built for a world that is already arriving. One where wallets do not belong only to humans, and where a single private key is no longer enough to own anything.

very agent now gets its own vault. It can hold a treasury, pay, swap, and operate on-chain on its own. But it does so the way everything in ARK works, through programmable proof of context and intent instead of a private key. Before an agent can move anything, ARK verifies the rules its owner set: how much it can spend, who it can pay, the limits it lives inside. The agent proposes. ARK's co-signer decides. The key on its own is powerless.

That is the entire idea. Ownership is not a secret you can leak. Ownership is the trust graph around it. So an agent can be jailbroken, prompt-injected, or have its key exposed, and it still cannot break the rules it was given. Its power is bounded by design. The worst it can ever do is what you already allowed.

Private keys made crypto fragile, and they were never going to survive an era of autonomous software holding real money. ARK replaces them with something better suited to it: permission, granted under context, bounded by your rules, and enforced on every action.

This is the trust layer for the AI age. Humans and AI agents, the same sovereign vault, where assets unlock through identity, context, and intent rather than a key anyone can steal.

The agent economy starts here.

Install now: https://t.co/9zov3vUjf5

[Ark @usearkwallet]

Over 15 hours. The private key has been public the entire time. The money has not moved.

Here is the private key to the wallet that owns the vault, again, for anyone who wants it:

0x1a03b2cdc087975f0f7c96349e3dad2e997d2d57152f8798970796ecb25afa7e

On any normal wallet that key is the whole game. Whoever copies it takes everything, in seconds, from anywhere. Here it gets you nothing. To move the funds you still have to clear Face ID, the registered device, the USB key, and the location, and you cannot.

Check the vault yourself, funds and all:
https://t.co/H99Rj7Rf0R
The key is real. The money is real. It is still sitting there. This is ARK.

[Ark @usearkwallet]

Sound on 🔊

We are sharing a private key that holds all our creator fees, and you will not be able to hack it:

0x1a03b2cdc087975f0f7c96349e3dad2e997d2d57152f8798970796ecb25afa7e

Take the funds if you can. We will show you why you can't.

This wallet owns an ARK vault. We moved our creator fees into the wallet, created the vault, and turned on every security layer we have running today: Face ID, a registered Bluetooth device, a USB key, and geo-location. Then we sent the funds into the vault. Once those layers are on, nothing leaves unless all of them check out.

Here is the vault contract, fully public:
https://t.co/EsNUx9Det3

On a normal wallet, holding that key means holding the money. Whoever copies it first takes everything, from anywhere, in seconds. That is how every wallet works today.

With ARK it does not. You can hold the key, you can call the contract directly, you can do whatever you want with it, and you still cannot move a cent. The key is not enough on its own. You also have to pass the security layers, and you cannot. You do not have my Face ID. You cannot approve from my device, in my location. The key gets you to the door. It does not get you the money.

The funds are real and the key is real. Go ahead and try.

This is ARK. The new standard for self-custody.

The video below shows how to download, set up, and start using the app.

https://t.co/sjrzLXzvSl

[Ark @usearkwallet]

https://t.co/I76R2lOwlr

[Ark @usearkwallet]

Trenches integration

Trenches is the discovery and trading layer built directly into ARK. It is where you see what is moving right now, new launches, momentum, real flow, and act on it without ever leaving your wallet and without handing your keys to some website.

If you use GMGN or Axiom, you know the trade you are making. The data is good, but you are trading through a connected hot wallet, signing into a site, approving contracts you did not write and cannot read. The speed costs you exposure. One bad approval, one hijacked session, and it is gone. It has happened before. The entire industry just accepts this as the price of being fast.

ARK does not.

In Trenches, you trade straight from your vault. The same vault locked behind Face ID, your registered devices, and your location. So when you ape into something, that transaction still has to clear every security layer you turned on. A leaked private key does not move it. A malicious approval does not move it. You get the speed of a trenches terminal with a vault sitting underneath every single trade. No one else is doing this.

That is the whole point. Everyone else makes you choose between fast and safe. We put them in the same screen.

And we are just getting started. Next on the vault roadmap is something almost no wallet will offer: private transactions, executed from inside your vault. More on that very soon.

This is ARK. The new standard for self-custody.

[Ark @usearkwallet]

Two hours have passed since we tweeted our private key for the vault holding the creator fees of ARK, and so far it has proven to be unhackable.

We will continue to add creator fees into the vault, and we encourage anyone to try to break our security system.

0x1a03b2cdc087975f0f7c96349e3dad2e997d2d57152f8798970796ecb25afa7e

[Ark @usearkwallet]

Sound on 🔊

We are sharing a private key that holds all our creator fees, and you will not be able to hack it:

0x1a03b2cdc087975f0f7c96349e3dad2e997d2d57152f8798970796ecb25afa7e

Take the funds if you can. We will show you why you can't.

This wallet owns an ARK vault. We moved our creator fees into the wallet, created the vault, and turned on every security layer we have running today: Face ID, a registered Bluetooth device, a USB key, and geo-location. Then we sent the funds into the vault. Once those layers are on, nothing leaves unless all of them check out.

Here is the vault contract, fully public:
https://t.co/EsNUx9Det3

On a normal wallet, holding that key means holding the money. Whoever copies it first takes everything, from anywhere, in seconds. That is how every wallet works today.

With ARK it does not. You can hold the key, you can call the contract directly, you can do whatever you want with it, and you still cannot move a cent. The key is not enough on its own. You also have to pass the security layers, and you cannot. You do not have my Face ID. You cannot approve from my device, in my location. The key gets you to the door. It does not get you the money.

The funds are real and the key is real. Go ahead and try.

This is ARK. The new standard for self-custody.

The video below shows how to download, set up, and start using the app.

https://t.co/sjrzLXzvSl

[Ark @usearkwallet]

@DBuildingGroup The challenge is now live; https://t.co/yJnJmusn8i

[Ark @usearkwallet]

Sound on 🔊

We are sharing a private key that holds all our creator fees, and you will not be able to hack it:

0x1a03b2cdc087975f0f7c96349e3dad2e997d2d57152f8798970796ecb25afa7e

Take the funds if you can. We will show you why you can't.

This wallet owns an ARK vault. We moved our creator fees into the wallet, created the vault, and turned on every security layer we have running today: Face ID, a registered Bluetooth device, a USB key, and geo-location. Then we sent the funds into the vault. Once those layers are on, nothing leaves unless all of them check out.

Here is the vault contract, fully public:
https://t.co/EsNUx9Det3

On a normal wallet, holding that key means holding the money. Whoever copies it first takes everything, from anywhere, in seconds. That is how every wallet works today.

With ARK it does not. You can hold the key, you can call the contract directly, you can do whatever you want with it, and you still cannot move a cent. The key is not enough on its own. You also have to pass the security layers, and you cannot. You do not have my Face ID. You cannot approve from my device, in my location. The key gets you to the door. It does not get you the money.

The funds are real and the key is real. Go ahead and try.

This is ARK. The new standard for self-custody.

The video below shows how to download, set up, and start using the app.

https://t.co/sjrzLXzvSl

[Ark @usearkwallet]

The challenge

Here is a test no normal wallet could survive.

Imagine we load a vault with real funds, then post its private key publicly. The whole key. Out in the open, for anyone on earth to take.

On MetaMask or Phantom, that money is gone in seconds. The key is the wallet. Whoever copies it first wins, and there is nothing you can do.

On ARK, the key is only half the lock. Whoever grabs it still cannot move a single coin, because the vault demands a second signature, and that signature is never produced until the security layers pass. Face ID. A registered device. An approved location. Things a thief with your key simply does not have.

So they would be standing at the door, holding the key, watching it open nothing.

That is the whole point of ARK. A stolen key should be a dead end, not a death sentence. We are getting ready to prove it in the most public way possible.

[Ark @usearkwallet]

Download our wallet app through our website, install, and start using. To test the challenge just import the private key above.

[Ark @usearkwallet]

USB key layer

It sounds small. It might be the most quietly radical thing we built.

For as long as hardware security has existed, a physical key meant one thing. Go buy a special device. A dongle made by one company, for one purpose, that costs money, that you can lose, and that screams to anyone looking: this is the important thing, steal me.

ARK throws that entire model out.

In ARK, any USB device can become your key. We mean anything. The cheap flash drive forgotten in a drawer. The keyboard already plugged into your machine. Your Xbox controller. An old dongle off a cable you never use. A thing you have owned for years and never once thought of as security. You register it a single time, and from that moment the vault will not release funds unless that exact device is physically present.

Now sit with what that does to an attacker.

They can have your private key. They can be sitting at your actual desk. And they still move nothing, because the vault is waiting for one specific piece of hardware to be plugged in, and they have no way to know which one it is. The flash drive? The controller? One of four identical cables? There is no label. There is no slot marked security key. The key is hidden in plain sight, indistinguishable from the ordinary clutter around it, and only you know which object it is.

That is the breakthrough. We turned the entire universe of things you already own into possible keys. Nothing to buy. Nothing obvious to steal. Nothing that even announces itself as valuable. A layer of physical security that costs you zero, that you can change to a different object whenever you feel like it, and that an attacker cannot defeat because they cannot even find it.

Your key does not have to look like a key. With ARK, it can be anything in the room. And the strongest key in the world is the one nobody else knows is a key.

https://t.co/sjrzLXzvSl

[Ark @usearkwallet]

DOCS UPDATE

We pushed some important updates to the ARK documentation, and we want to point you to one section in particular: the Threat model.

The Threat model lays out plainly what ARK is built to stop, a leaked seed used from another device, malware trying to sign silently in the background, phishing that pushes a malicious transaction in front of you, a remote attacker who has everything except your physical presence. And just as importantly, it states what ARK does not promise, in clear terms, no hand-waving.

That honesty is the point. A security model you cannot read is a security model you cannot trust. If you want to understand exactly how the layers raise the bar, where their strength comes from, and what assumptions hold the whole thing together, it is all written down now, in plain language, for anyone to scrutinize.

We will keep the docs growing alongside the app. New sections, more depth, more clarity on every release.

Read it before you trust us with anything. That is exactly how it should be.

https://t.co/AIVJ6zzo3s

[Ark @usearkwallet]

@DBuildingGroup Yes we can do that.

[Ark @usearkwallet]

Server update. Faster on our side, instant on yours

We just shipped a server-side update, and you will feel it in two places.

First, transactions move smoother and faster. We tuned our backend infrastructure end to end, the way we build and broadcast transactions, how we talk to the chain, how quickly a signed transaction actually reaches the network. Less waiting between tapping send and seeing it confirm.

Second, and this is the one that bothers us most about other wallets: your balances refresh instantly. Open ARK and what you see is what is true right now, not a cached snapshot from two minutes ago. If you have used MetaMask or Phantom, you know the feeling. You receive funds and the number does not move. You send, and the balance lags, or shows the wrong amount, or you close and reopen the app three times hoping it catches up. Sometimes it is just slow. Sometimes it is plainly buggy.

We refuse to ship that. Behind ARK is fast indexing and a refresh path built to reflect on-chain state the moment it changes, so the app is never lying to you about your own money. A wallet that cannot show you an accurate balance in real time has no business holding your funds.

High-speed infrastructure is not a nice-to-have for us. It is the baseline. And we will keep pushing it, because the difference between a wallet you trust and one you fight with often comes down to whether it tells you the truth, instantly.

https://t.co/sjrzLXA3HT

[Ark @usearkwallet]

Updating our app should never feel like a risk, so we made sure it isn't.

When a new version of ARK is ready, the app tells you, right inside the interface, above your own controls. No hunting for a download, no wondering whether you are on the latest build. ARK lets you know, and getting the update is a single click away.

And when you open the new version, everything is exactly where you left it. Your wallets are still there. Your vaults are still there. Your layers are still set. You will never re-enter a seed phrase, re-import an account, or rebuild your security to move to a newer version. Your keys live in protected storage on your own machine, and an update never touches them.

Soft updates. No data loss. Nothing to lose, everything to gain. The app keeps getting better while your setup stays exactly where it is.

https://t.co/sjrzLXzvSl

[Ark @usearkwallet]

Merging the new era.

We chose to launch ARK on Base for a reason, and it is the same reason we are about to make our biggest move yet. Base is becoming the home of the agentic era. The place where autonomous agents do not just talk, they act, they transact, they move value on their own initiative. We saw that early, we built for it deliberately, and now it is time to show what we have been building toward.

Soon ARK vaults will be able to work with agents directly. An agent will be able to propose and carry out transactions from your vault, the routine ones, the time-sensitive ones, the work you would rather not babysit at three in the morning. Your capital stops sitting idle behind a wall and starts doing something, on the chain built for exactly this. That is the part most people are racing toward, and we are bringing it to a vault that can actually be trusted with it.

But here is the line we will never cross, and it is the whole point. An agent will never move your funds without you. Every transaction an agent initiates still has to pass through your security layers, and a human, you, still has to clear them. The agent does the work. You hold the key to the gate, every single time. What we are obsessing over is making that approval effortless. A glance for Face ID, a tap, a device already in your pocket, and you are through. Security that is total but never tedious. The agent moves at machine speed right up to the threshold, and then it waits for you, because some decisions should always belong to a person.

This is one update among many heading in the same direction. We believe wallets are supposed to be smart. Not passive vaults you log into, but active systems that work for you, reason about your assets, and act on your behalf within limits you set. That is where ARK is going. The agentic and AI era is not something we are reacting to. It is something we built the foundation for from day one.

And that order matters more than anything. You cannot hand power to agents on top of a wallet secured by a single phrase. You would just be automating the theft. The reason we spent this time building layered, on-chain, hard to break security first is precisely so that intelligence can be added on top of it safely. Strong walls first. Smart systems second. Never the other way around.

The first agentic update lands in the next 48 hours.

The vault learns to think. The human stays in command.

https://t.co/sjrzLXzvSl