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Crypto · 01 / 10
BasicsLevel 1Beginner7 minUpdated

What are crypto-assets?

The ABC of crypto in plain language: what a blockchain is, what a token means and what you actually own when you own bitcoin.

In this lesson you'll learn
  • What blockchain, token and wallet mean in practice.
  • Why crypto is fundamentally different from a share or a bond.
  • Which two questions matter more than a price forecast.

A blockchain is a shared ledger

A blockchain is a public ledger maintained by thousands of computers at the same time. No single party owns it or can change its history alone. Anyone can verify every transaction, and a new entry is accepted only once the network agrees on it.

A token is the unit of this network: the thing that is moved on the ledger. A wallet does not store tokens. It stores a private key that proves your right to move them. The assets are always on the chain; the key is what can be lost.

YouTube video · in FinnishGetting to grips with crypto: the essentials for beginners

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What you own when you own crypto

With a share, you own a stake in a company that generates revenue and can pay dividends. With a bond, you own a claim that pays interest. With a crypto-asset, you own an entry in a ledger, and the right to pass it on.

This does not make crypto worthless, but it changes the logic of valuation. There is no cash flow, so the price cannot be calculated from returns. The value rests on scarcity, use and what others are willing to pay.

Share
A stake in a company that generates cash flow.
The value can be derived from earnings and dividends. Ownership is recorded in a register in your name.
Crypto-asset
An entry in a ledger whose key you hold.
No cash flow and no issuer. Ownership is based on control of the key.

One fact instead of opinions

Bitcoin's maximum supply is written into the protocol's code. Scarcity is a structural feature, not a marketing promise. It says nothing about the direction of the price, only that the supply cannot be increased by a decision.

Fact · bitcoin's supply is capped
  • Mined (~93.8%)
  • Remaining (~6.2%)
21 000 000
Maximum supply, written into the code
This is information about the structure, not a forecast of value: the price can move in any direction. The mined share is an approximation.

Three things crypto is not

Not a savings account
No interest, no deposit guarantee scheme. The value can fall quickly and stay low for years.
Not anonymous
Public chains are transparent. Transactions are permanent and anyone can read them.
Not all the same
Bitcoin, ether and thousands of other tokens are different things, with different risks and different purposes.

Two questions that decide it

Talk about prices draws attention away from two questions you can actually influence. The first is custody: who holds the private keys, and what happens if that party fails. The second is weight: how large a share of your portfolio is in crypto when the market falls 80 percent.

You don't have to guess either one. Both are decisions you make in advance, and that is exactly why it makes sense to make them before your first purchase.

Custody → lesson 05 · Weight and risk → lesson 07 · Regulation → lesson 08 · Taxation → lesson 09

Exercise · fact or opinion
A blockchain is a shared, public ledger that nobody owns. Sort the statements: is each one a verifiable fact or an opinion?
Kysymys 1 / 5
Bitcoin's supply is capped at 21 million coins, written into the protocol's code.
Kysymys 2 / 5
Ethereum moved from a proof-of-work mechanism to proof of stake in 2022.
Kysymys 3 / 5
“The price of bitcoin will reach one million euros by the end of the decade.”
Kysymys 4 / 5
“Crypto is nothing but a scam with no real value at all.”
Kysymys 5 / 5
Anyone can publicly verify the transactions on a blockchain.
Score: 0 / 5

This content is for information purposes only and should not be construed as investment advice or a recommendation. Investing always involves the risk of losing capital. The value of financial instruments and investments can go up or down, and past performance is no guarantee of future returns.

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