How to Mine HashCats and Similar Crypto Projects Without Buying a GPU

Buying a high-end GPU is expensive. But for projects like HashCats and other browser-based proof-of-work crypto experiments, some users are renting cloud GPUs instead.

The idea is simple: rent a powerful remote machine, open a Linux desktop in the browser, launch the mining site from that remote desktop, and let the rented GPU do the heavy work.

This guide explains how to mine HashCats without owning a GPU, how to use Vast.ai or Clore.ai, and what other mining-style crypto projects are worth watching.

What Is HashCats?

HashCats is a proof-of-work NFT project on Robinhood Chain. Instead of a normal mint button, users mine cats by producing valid hashes.

That makes it different from most NFT launches. The result depends on mining power, luck, gas fees, and network competition.

Robinhood Chain is an Ethereum-compatible Layer 2, so users need a supported EVM wallet and ETH for gas when submitting transactions.

Why Use a Cloud GPU?

A laptop or basic desktop may not produce enough hashrate to compete. A cloud GPU lets you rent stronger hardware for a short session instead of buying a physical card.

For HashCats-style browser mining, users often look for powerful NVIDIA GPUs such as:

• RTX 4090 — strong performance and widely available on many GPU marketplaces
• RTX 5090 — newer, faster, and usually more expensive when available

The goal is not just to get the biggest GPU. The goal is to get the best hashrate for the lowest hourly cost.

Cloud GPU Sites You Can Use

Option 1: Vast.ai

Vast.ai is a cloud GPU marketplace where users can rent GPU instances. It supports credit card payments through Stripe and crypto payment options.

For beginners, Vast.ai is useful because you can start with a small balance, choose a Linux desktop template, and open the remote instance directly from the browser.

Visit Vast.ai here.

Option 2: Clore.ai

Clore.ai is another GPU leasing marketplace. Its documentation lists crypto mining as one of the use cases for rented computing power. It also offers Spot and On-Demand rental options.

Clore.ai is more crypto-native. Its renter docs mention deposits using CLORE, BTC, USDT, or USDC, so check the payment options before starting.

Register on Clore.ai here.

Step-by-Step: How to Mine HashCats Without Owning a GPU

Step 1: Choose Your Cloud GPU Platform

Start with either Vast.ai or Clore.ai.

• Use Vast.ai if you want a simple card/Stripe funding route.
• Use Clore.ai if you prefer a crypto-native GPU marketplace.

Step 2: Add a Small Starting Balance

Do not overfund your account on the first try. A small test balance, such as $10 on Vast.ai, is enough to learn the process and check whether the setup works.

On Vast.ai, you can add credit using a bank card through Stripe. On Clore.ai, check the latest deposit options inside your account because its docs mention CLORE, BTC, USDT, and USDC deposits.

Important: Always check the platform rules before running mining workloads. Payment methods, mining rules, and usage restrictions can change.

Step 3: Rent a Powerful GPU

Search for a strong NVIDIA GPU. For HashCats and similar browser proof-of-work projects, RTX 4090 and RTX 5090 machines are the main cards to compare.

Before renting, check:

• GPU model
• Hourly price
• Reliability score
• Region
• Storage cost
• Bandwidth cost
• Whether the rental can be interrupted

For short mining tests, a cheaper Spot rental may be enough. For longer sessions, an On-Demand rental may be more stable.

Step 4: Choose a Linux Virtual Desktop

Select a Linux virtual desktop template, such as Ubuntu Desktop. This gives you a full desktop interface inside your browser.

This matters because you want to open Chrome inside the rented GPU machine. The remote GPU, not your local computer, should run the mining page.

Step 5: Wait for the Instance to Start

After renting the machine, go to your instances page. Wait until the instance is ready.

On Vast.ai, wait for the Open button. Click it when the instance becomes available. Then open the remote desktop viewer.

Step 6: Open Chrome Inside the Remote Desktop

Once the Linux desktop loads, open Chrome inside the remote machine.

Do not open Hashcats.fun only on your normal laptop browser. That would use your local device, not the cloud GPU.

Step 7: Go to Hashcats.fun

Inside Chrome on the remote desktop, visit:

http://hashcats.fun

Reconnect your wallet. If your normal wallet extension is not available inside the remote browser, use a supported wallet connection method such as WalletConnect where available.

Never type your seed phrase into a rented cloud machine. Use a fresh wallet with only the funds needed for gas.

Step 8: Start the Miner

Click the mining button on Hashcats.fun and watch the performance display.

The site may show speed in:

• MH/s — megahashes per second
• GH/s — gigahashes per second

Higher hashrate usually means more attempts per second. But it does not guarantee that you will mine a cat. Proof-of-work still involves chance and competition.

How to Check If Your Cloud GPU Is Worth It

Do not mine blindly. Track the math.

Use this quick formula:

Total cost = GPU rental cost + storage cost + bandwidth cost + gas fees

Then compare that cost with the expected value of the mined NFT or token.

Ask yourself:

• How much am I paying per hour?
• What MH/s or GH/s am I getting?
• How long will I run the miner?
• How much ETH will I spend on gas?
• Is the NFT or token liquid enough to sell?

If the GPU is expensive and the hashrate is weak, stop the instance and try another machine.

Similar Projects Like HashCats

HashCats is part of a larger trend: browser-based mining, mineable NFTs, and proof-of-work token launches on EVM chains.

Here are some similar or related projects to research:

1. BTC Foundry

BTC Foundry describes itself as a browser-mined proof-of-work token on Robinhood Chain. Its model uses Bitcoin-style ideas such as a 21 million cap, halving schedule, and difficulty adjustment.

2. CHROMODYNAMICS

CHROMODYNAMICS describes itself as a WebGL-powered 3D hardware simulator and proof-of-work GPU mining ecosystem. It combines NFT-style rigs, browser hashing, and mining telemetry.

3. XPower

XPower is a browser-based proof-of-work token system on Avalanche C-Chain. Its docs say users mine XPOW through Keccak-256 hashing and can use NFTs for staking mechanics.

4. APoW

APoW, or Agent Proof-of-Work, is a Base L2 mining protocol where agents use ERC-721 Mining Rig NFTs and compete to mine AGENT tokens.

5. Ergo

Ergo is not an NFT mining project, but it is a well-known GPU-friendly proof-of-work blockchain. It uses the Autolykos algorithm and is often discussed by GPU miners.

Universal Setup for Browser PoW Mining Projects

The same cloud GPU workflow can be used for many browser mining projects:

1. Rent a cloud GPU from Vast.ai or Clore.ai.
2. Choose a Linux desktop environment.
3. Open the remote desktop.
4. Launch Chrome inside the remote machine.
5. Visit the mining project website.
6. Connect a safe wallet.
7. Start the miner.
8. Check MH/s, GH/s, accepted shares, or on-chain submissions.
9. Stop or destroy the instance when finished.

This works best for browser-based projects where the mining page can use the remote machine’s compute resources.

Security Rules Before You Mine

Cloud GPUs are useful, but they are not risk-free. Treat every rented machine as temporary and untrusted.

• Use a separate wallet for mining.
• Do not store large funds in that wallet.
• Never enter your seed phrase on a cloud machine.
• Use WalletConnect or a burner wallet where possible.
• Disconnect your wallet after mining.
• Destroy the instance after the session.
• Check billing so you do not pay for idle storage.

Common Mistakes to Avoid

Opening the mining site on your local browser

If you open Hashcats.fun on your laptop instead of the remote desktop, you may not be using the rented GPU. Always open the site inside Chrome on the remote machine.

Leaving the GPU running

Cloud instances can keep charging while active. Some platforms may also charge for storage while an instance still exists. Stop or destroy unused instances.

Using your main wallet

Do not connect a wallet that holds your main NFTs, tokens, or long-term funds. Use a fresh wallet with limited ETH for gas.

Ignoring platform rules

Not every cloud provider allows every type of mining workload. Read the latest rules for Vast.ai, Clore.ai, and the specific host before running a miner.

Final Thoughts

HashCats has turned NFT minting into a mining race. Instead of buying a GPU, users can rent cloud hardware and test the miner from a remote Linux desktop.

The easiest path is to open Vast.ai or Clore.ai, rent a strong RTX 4090 or RTX 5090 machine, launch Chrome inside the remote desktop, reconnect to Hashcats.fun, start the miner, and watch the MH/s or GH/s output.

This strategy can also apply to other browser proof-of-work projects. But it is not guaranteed profit. Track your rental cost, gas fees, wallet safety, and project risk before you mine.

Cloud GPU mining is powerful. Use it carefully.