Blog

Guides to mobile mining, wallet security and crypto basics

Referral system explained: links, attribution, rewards and fraud controls

Building UNC

Referral System: How It Works and How to Build One That Lasts

A referral system turns existing users into a growth channel, but only if attribution is exact and the rewards cannot be farmed. This guide covers how one works end to end, how to build it, and what we learned running our own.

8 min
Crypto coin airdrop explained — how token distributions work, from UNC

Getting Started

Crypto Coin Airdrop: How They Work and What They Actually Pay

A crypto coin airdrop sends tokens to wallet addresses that never paid for them. A handful have paid out four and five figures; the overwhelming majority pay less than the gas spent qualifying, and a whole category of them exists purely to drain the wallet that claims. Here is the mechanism, the arithmetic, and the checks that separate the three.

12 min
Best crypto mining app — an honest comparison guide from UNC

Mining

Best Crypto Mining App: How to Judge One Without Guessing

Every list of the best crypto mining app is ranked by referral payout, not by output, because the output is roughly the same everywhere: nearly nothing. Here is the arithmetic behind that, the four very different things that call themselves mining apps, and a checklist you can apply to any of them in ten minutes.

11 min
Free crypto mining — an honest explanation of the economics, from UNC

Getting Started

Free Crypto Mining: What "Free" Actually Buys You

You can mine cryptocurrency without spending money, and the reason it costs nothing is the same reason it pays almost nothing. Here is the arithmetic for a phone against a real network, where the genuine free options are, and how to tell a free mining offer from an investment scam dressed up as one.

9 min
Crypto scam news — how to read arrests, airdrop drainers and cloud mining cases, from UNC

Security

Crypto Scam News: How to Read It Without Being Misled

Scam news is history by definition: a story exists because a scheme has already collapsed or prosecutors have finished enough of an investigation to charge someone. The schemes taking money next month are unreported — and they are reruns of about five formats. Here is how to read the news for the pattern instead of the names, and what to check on your own holdings today.

11 min
Crypto faucet games explained — house edge and scam patterns, from UNC

Staying Safe

Crypto Faucet Games: What They Are and What They Cost

A crypto faucet game gives you a free stake and then invites you to gamble it. The free part is real and the gambling part is real, and the second one is designed to recover the first many times over. Here is the arithmetic of the house edge, the four formats you will run into, and the point at which a faucet game stops being a bad bet and becomes outright theft.

13 min
Free crypto mining site — what the four common models actually do, explained by UNC

Getting Started

Free Crypto Mining Site: What Are You Actually Getting?

Four very different things call themselves free mining: browser hashing scripts, cloud contracts with a free tier, scheduled-allocation apps, and dashboards where no mining happens at all. Only one of them is mining in the technical sense, and it is the one that costs you real money in electricity. Here is how to tell them apart and test any of them in ten minutes.

12 min
How does a crypto scam work — the five stages explained, a UNC safety guide

Safety

How Does a Crypto Scam Work? The Machine Behind the Story

Crypto scams are not improvised. They are a repeatable five-stage process — contact, credibility, control, extraction, exit — and every variant you have heard of is that same process wearing a different costume. Once you can see the stages, the costume stops mattering.

10 min
Mobile crypto mining app — how to choose one, a guide from UNC

Mining Basics

Mobile Crypto Mining Apps: How to Choose One

There are hundreds of these apps and most reviews of them are paid placements. Here is what they actually do, how they make their money, and how to judge one yourself.

8 min
Crypto faucet game explained — how faucet games pay and what caps the payouts

Getting Started

Crypto Faucet Game: How the Payouts Actually Work

A crypto faucet game wraps a faucet in a spin wheel, an arcade round or a tap-to-mine simulator. The game part is real; the earnings part is capped by what an advert is worth. Here is the arithmetic, the formats you will meet, and the scam pipeline that ends at a cash kiosk.

12 min
Is mobile crypto mining profitable in 2026 — analysis from UNC

Mining Basics

Is Mobile Crypto Mining Profitable in 2026?

The honest answer depends entirely on which of three very different things an app is doing. Two of them cannot be profitable by arithmetic. Here are the real numbers.

7 min
Best crypto faucet sites — honest evaluation guide from UNC

Getting Started

Best Crypto Faucet Sites: How to Judge Them Yourself

Most "top 10 faucet" lists are ranked by referral commission, not by payout or reliability. Since advertising revenue caps what any faucet can pay, the only ranking that means anything is which ones actually pay and stay online — and that is something you can check yourself in five minutes per site.

12 min
Crypto mining cloud contracts explained — UNC guide to cloud mining

Mining

Crypto Mining Cloud: How Cloud Mining Contracts Actually Work

Cloud mining lets you pay for someone else's mining hardware and keep the coins it produces. The concept is real, the industry around it is largely not, and the arithmetic is unkind even when the provider is honest. Here is a worked contract, the fee clause that ends most of them, and the checks worth doing before you send anyone money.

10 min
How to earn money from phone — an honest guide from UNC

Guides

How to Earn Money From Your Phone: An Honest Guide

Most articles on this topic promise far more than they deliver. This one gives you the actual numbers: what each method pays, what it costs you in time, and which ones are not worth opening.

4 min
What is a crypto coin faucet — UNC explainer guide

Getting Started

What Is a Crypto Coin Faucet? An Honest Look at Free Crypto

A crypto coin faucet drips out fractions of a cent in exchange for your attention. That makes it a useful way to see how wallets and transactions work, and a terrible way to earn money. Here is the arithmetic, plus the difference between a mainnet faucet, a testnet faucet, and a fake one.

12 min
How does mobile crypto mining work — UNC guide

Mining Basics

How Does Mobile Crypto Mining Actually Work?

If a phone cannot out-compute a warehouse full of mining rigs, what exactly is a mobile mining app doing? Here is the honest answer, including what these apps can and cannot pay you.

7 min
Is mobile crypto mining safe — UNC security guide

Security

Is Mobile Crypto Mining Safe? What to Check First

The dangerous part of mobile mining is rarely the mining. It is the permissions you grant, the people who contact you afterwards, and the apps that were never real. Here is what to actually check.

7 min
Does crypto mining drain your phone battery — UNC guide

Mining Basics

Does Crypto Mining Drain Your Phone Battery?

The answer splits cleanly in two, depending on whether an app actually computes anything. One kind is harmless. The other will cost you real battery capacity.

8 min
What is KYC in crypto — UNC guide to identity verification

Getting Started

What Is KYC in Crypto, and Why Do Apps Ask for Your ID?

Handing a photo of your passport to a crypto app feels uncomfortable, and the discomfort is reasonable. Here is what KYC actually is, why it exists, and what you should demand to know before submitting anything.

7 min
Difference between coin and token in crypto — UNC guide

Getting Started

Coin vs Token: What Is the Actual Difference?

People use the words interchangeably, but they describe genuinely different things. The distinction affects what fees you pay, what security you inherit, and what can go wrong.

7 min

What we write about, and why

Most writing about mobile crypto exists to convert readers into sign-ups, which is why so much of it is vague in the same places. The mechanism is described as proprietary technology. Earnings are implied rather than stated. The question of whether anything can actually be withdrawn is left until after you have installed something.

These guides are written to be useful whether or not you ever use UNC. That means explaining how mobile mining actually works, including the part where almost no app in this category performs real computation on your phone — ours included. It means being specific that pre-mainnet coins have no market price and cannot be converted to cash. And it means covering the topics that protect people rather than only the ones that sell: recovery passphrases and why nobody can restore a lost one, how giveaway scams are constructed, what identity verification is for, and how to read a blockchain explorer so you can check a balance without trusting the app that displayed it.

Where a post touches on something we build, we say so in the post rather than leaving you to work it out. We would rather be the project that told you the unflattering version first, because a reader who understands the limitations and takes part anyway is worth more to a network like this than one recruited on an impression that does not survive contact with the product.

If something here is wrong, out of date, or reads as though it is selling rather than explaining, that is worth telling us about. The value of writing like this depends entirely on it being accurate, and accuracy is easier to maintain when readers push back.

Where to start

If you are new to the category, the most useful thing to read first is how mobile crypto mining actually works, because almost everything else follows from understanding that no real computation happens on your phone. Once that is clear, claims made by apps in this space become far easier to evaluate — you stop asking how much an app pays and start asking what it is actually doing, which is a much better question.

If you are mainly concerned with not losing anything, start with the security material instead. The pieces on recovery passphrases and on giveaway scams cover the two mechanisms behind the majority of individual losses in crypto, and neither is technically complicated. Most people who lose funds do not lose them to a sophisticated exploit; they lose them by storing a passphrase somewhere it could be read, or by typing it into something that asked convincingly.

If you arrived here specifically wondering whether any of this is a way to make money, the honest guide to earning from a phone is the one to read, and it will probably not tell you what you were hoping to hear. Its conclusion is that a phone is an excellent tool for supplementary income and a poor tool for replacing a salary, and that the highest-paying option available to most people is a skill they already have rather than any app at all.

A note on the word mining

You will notice the word mining used throughout this site, including in places where we then immediately explain that no mining in the computational sense is taking place. That tension is deliberate but not comfortable, and it is worth explaining rather than leaving as an apparent contradiction.

People search for mobile mining. It is the language the category has settled on, and refusing to use it entirely would mean writing guides that the people who need them cannot find. The alternative we have chosen is to use the term where it aids discovery and then correct it on the page, every time, rather than letting the association with Bitcoin do unearned work. If the industry ever settles on more accurate language, we will use that instead.

The same reasoning governs how these posts treat UNC itself. A guide that quietly steers every conclusion toward the product it is published by is advertising wearing the clothes of explanation, and readers can generally tell. Where UNC is a reasonable answer to the question a post is asking, it is named alongside its limitations. Where it is not the right answer, the post says so and points somewhere else, because a guide that cannot recommend against its own publisher is not a guide worth reading in the first place.