Coins-Info: Plain‑English Guides to Bitcoin and Crypto

Coins-Info is a plain-English reference for cryptocurrency. If you have heard about Bitcoin and want to know what it actually is, how people buy and store it safely, what all the jargon means, and which offers are traps, start here. Every guide is written for beginners, checked against primary sources, and free of price tips and sponsored placements.

This page gives you the short version of the essentials and points you to the right guide for each question. It was last revised in October 2026.

Start here: crypto in five minutes

A cryptocurrency is money that exists as entries on a shared, public ledger rather than in a bank’s database. Thousands of computers around the world keep copies of that ledger and agree, through a set of rules, on which payments are valid. You control your funds with a secret key, a very long number kept in a piece of software or a small device called a wallet. Sign a payment with that key, broadcast it, and within minutes it is recorded for good.

Bitcoin was the first of these systems, launched in January 2009, and it is still the largest. Its rules limit the supply to 21 million coins, release new ones on a fixed schedule to miners who secure the network, and halve that release roughly every four years. Thousands of other coins and tokens have followed, some with new ideas and many without.

Three facts surprise most newcomers:

• Payments cannot be reversed. There is no chargeback and no fraud department. A mistyped address or a payment to a scammer is usually final.
• Whoever holds the key owns the coins. Lose it without a backup and the coins are gone; reveal it and someone else can take them.
• Transactions are public. Bitcoin is not anonymous. Every payment is visible forever, and identities are often linked to addresses through exchanges.

What people actually use crypto for

Uses vary widely, and each comes with its own trade-offs:

• Holding as a long-term bet. Many owners simply buy and wait, accepting large price swings in the hope of long-run gains. Nobody can promise those gains.
• Sending money abroad. A crypto transfer can cross borders at any hour without a correspondent bank, although converting back into local currency adds fees and paperwork at each end.
• Protection from a weak local currency. In countries with high inflation or capital controls, some people hold Bitcoin or dollar stablecoins instead of local money, trading inflation risk for volatility and custody risk.
• Payments online. Some merchants accept crypto through payment processors, and small payments increasingly travel over Bitcoin’s Lightning Network.
• Building applications. Developers use smart-contract platforms to create exchanges, lending tools and digital collectibles, with mixed results and frequent hacks.
• Speculative trading. Short-term trading of coins and tokens is where many beginners lose money fastest, especially with borrowed funds.

Knowing which of these you are interested in makes it much easier to judge which risks matter to you. A long-term holder should care most about safe storage, while someone sending money abroad should look hardest at conversion fees and the reputation of the platforms at each end.

Our guides

A suggested reading order

1. Begin with What is Bitcoin. Nearly every other coin borrows its ideas, so the rest of crypto is easier once you understand it.
2. Keep the Blocktionary open in another tab and look up anything unfamiliar.
3. If you plan to buy, read how and where to buy bitcoin before you open an account, not after.
4. Move on to altcoins and Litecoin when you want the wider picture.
5. Read the cloud mining guide before you respond to any offer of mining income.

The key ideas, briefly

Blockchain

A blockchain is a ledger built from blocks of transactions, each block sealed with a cryptographic fingerprint of the one before. Changing an old entry would change every fingerprint after it, which the rest of the network would immediately reject. That chaining is what lets strangers agree on one history without a referee.

Mining and staking

Someone has to decide which block comes next. In proof-of-work systems such as Bitcoin, miners compete by spending computing power and electricity, and the winner earns newly issued coins plus fees. Proof-of-stake systems such as Ethereum, which switched over in September 2022, select validators who lock up coins as collateral instead. Both approaches make cheating more expensive than playing fair.

Wallets, keys and seed phrases

Your wallet stores keys, not coins. When you set one up it usually shows a list of 12 or 24 words, the seed phrase, from which every key can be rebuilt. Treat those words like the combination to a safe that has no locksmith: write them down offline, keep them private, and never enter them on a website or share them with anyone claiming to offer support.

Exchanges and custody

Most people buy crypto through an exchange. While coins stay there, the exchange holds the keys and you hold a claim against the company. Exchanges have failed before, Mt. Gox in 2014 and FTX in 2022 among them, which is why many holders move coins they intend to keep into a wallet they control.

Coins, tokens and stablecoins

A coin has its own blockchain; a token is issued on top of somebody else’s. Stablecoins are tokens designed to track a currency such as the US dollar. In the European Union, the Markets in Crypto-Assets Regulation (MiCA) has applied in full since 30 December 2024 and covers stablecoin issuers as well as exchanges and other service providers.

Crypto in numbers

A few figures come up again and again. All are fixed by the protocols themselves or by public block data, correct as of October 2026.

Staying safe: the short list

Most crypto losses do not come from broken cryptography. They come from tricks played on people. These habits stop the majority of them:

• Never share a seed phrase or private key. No exchange, wallet maker, government agency or “recovery expert” needs it.
• Be suspicious of anyone who contacts you first, whether by phone, social media, email or dating app, and then steers the conversation towards crypto.
• Ignore guaranteed returns, doubling giveaways and fixed daily profits. Real markets do not pay that way.
• Never pay a fee to withdraw your own money from a platform. That demand is a classic sign of a fake investment site.
• Use platforms registered with the financial regulator in your country, and turn on app-based two-factor authentication.
• Do not take cash to a Bitcoin ATM because someone told you to. The US Federal Trade Commission reports that losses involving these machines climbed above $110 million in 2023, with older adults hit hardest.
• Test with a small amount before sending a large one, and check the first and last characters of every address.

The scams beginners meet most often

The friendly stranger

It starts with a wrong-number text or a match on a dating app. Weeks of pleasant chat follow before the new friend mentions a trading platform that has made them rich. The platform is fake, the profits on screen are invented, and withdrawals are blocked until more money is paid. Police forces in several countries call this “pig butchering” because the victim is fattened up before the slaughter.

The official on the phone

A caller claims to be from your bank, a tax office or the police and says your savings are at risk. The solution offered is to convert cash into crypto, often at a Bitcoin ATM, and send it to a “safe” address. No real official will ever ask for this. Hang up and call the organisation back on a number you find yourself.

The giveaway

A video or post, often using a famous face, promises to send back twice whatever you send. These are always fraudulent, and deep-fake video has made them more convincing.

The recovery agent

After a loss, victims are contacted by people promising to trace and return the stolen coins for an upfront fee. They are frequently the same criminals, or others working from lists of known victims. Report losses to the police and your national fraud centre instead.

What Coins-Info will not do

We do not publish price predictions or live prices, recommend which coins to buy, or tell you when to sell. Crypto prices can halve within months, and nobody reliably knows which way they will move next. What we can do is explain how things work, show where the risks are and point to the official sources where you can check the facts yourself. Anything that involves your money is your decision.

We also do not take payment from projects or platforms to feature them. More about how the site is written and funded is on the About Coins-Info page.

Each guide lists its sources at the end, and dated facts carry the month they were checked. When something changes, such as a halving, a new regulation or a project shutting down, the affected pages are revised rather than left to drift.

A quick test of your understanding

If you can answer these five questions, you already know more than many people who own crypto. The answers are in the guides linked above.

1. Why can nobody reverse a confirmed Bitcoin payment?
2. What is the difference between leaving coins on an exchange and holding them in your own wallet?
3. What does a halving change, and roughly how often does it happen on Bitcoin?
4. Why is a promise of 1% profit a day from a mining company a warning sign?
5. What is the difference between a coin and a token?

Looking for coin collecting or currency information?

Coins-Info covers cryptocurrency only. If you arrived from an old link about collectible coins, bullion or currency exchange, those topics are not covered here. For collectible coins, national mints and established numismatic societies are good places to start; for exchange rates, use your bank or central bank.

Getting in touch

Spotted an error or an out-of-date fact? We correct confirmed mistakes on the page. Email [email protected] or see the contact page. Our privacy policy explains what data, if any, a visit involves.

Frequently asked questions

Is cryptocurrency real money?

It works as a means of payment between people who accept it, and some countries regulate it closely, but in most places it is not legal tender and shops are not obliged to take it. Its value against national currencies swings far more than ordinary money.

How do I start with crypto as a complete beginner?

Learn the basics first: how Bitcoin works, what a wallet and seed phrase are, and how scams operate. If you then decide to buy, use a registered platform in your country, start with a small amount you can afford to lose, and practise moving coins to your own wallet.

Is Bitcoin anonymous?

No. It is pseudonymous: payments are tied to addresses rather than names, but every transaction is public and permanent, and investigators routinely link addresses to people, especially through exchanges that verify identity.

Can I lose all my crypto?

Yes. Prices can fall sharply, platforms can fail, and coins can be stolen through phishing or lost along with a forgotten seed phrase. Payments sent in error usually cannot be recovered.

What is the difference between Bitcoin and other cryptocurrencies?

Bitcoin was the first and keeps a deliberately conservative design focused on being hard money with a fixed supply. Other cryptocurrencies, known as altcoins, change things such as speed, supply, privacy or programmability, and many have not lasted.

Does Coins-Info sell or recommend crypto?

No. We are an independent reference. We do not sell coins, run an exchange or recommend investments, and we are not paid to feature any project or platform.