Stocks without expiry: the CFTC opens the door to perpetual futures
The contracts the crypto market got to know are coming to US stocks, along with leverage and legal battles.

The contracts the crypto market got to know are coming to US stocks, along with leverage and legal battles.

How can a request to withdraw zero tokens leave behind losses of $1.47 million?

What happens when a money system comes of age but its creator is still nowhere to be found?

Withdrawals at Binance have reopened, but trust doesn’t come back at the push of a button.

Should I buy Bitcoin now? BTC's weekly RSI fell to historic lows in 2026. See what that has meant historically for market bottoms and which risks remain.

If you're looking for books on cryptocurrency, The Basics of Bitcoins and Blockchains is the starting point we recommend for a general introduction, while Mastering Bitcoin suits readers who want technical depth. Below we highlight five titles, explaining what each one offers, where it gets hard and what you shouldn't expect from it.How many times have you read an explanation of Bitcoin and ended up with more questions than you started with? A good book puts the concepts in order, something scattered videos and posts rarely manage. You just need to choose based on what you want to learn, not on how impressive the title sounds.Which crypto book to chooseWanting to understand what a digital wallet does is one thing; wanting to build software for Bitcoin is another. We group the five picks by the reason you're reading:For a general introduction: The Basics of Bitcoins and Blockchains by Antony Lewis.For blockchain without programming: Blockchain Basics by Daniel Drescher.For a technical study of Bitcoin: Mastering Bitcoin by Andreas M. Antonopoulos.For history and storytelling: Bitcoin Billionaires by Ben Mezrich.For applications and the wider economic implications: The Truth Machine by Michael J. Casey and Paul Vigna.We don't treat them as five interchangeable manuals. One explains mechanisms, another tells a story and a third explores possibilities that haven't necessarily materialized. That difference matters more than any ranking of “top” titles.Our 5 picks and what each one offers1. The Basics of Bitcoins and BlockchainsThe Basics of Bitcoins and Blockchains by Antony Lewis is our pick for the reader who first wants to get the basic concepts straight. It connects money, payments, Bitcoin and blockchain, instead of diving straight into difficult technical details.Its strength is a broad introduction that requires no programming. It helps you understand why different cryptocurrencies exist, how the key mechanisms work and what risks come with using them. For a beginner, this big picture is usually more useful than a narrow analysis of a single topic.We wouldn't pick it as a technical manual for building applications. Also, references to services or market practices need checking against newer sources, depending on the edition you have in hand.2. Blockchain BasicsBlockchain Basics: A Non-Technical Introduction in 25 Steps by Daniel Drescher approaches the technology in 25 steps, with no code and no mathematical formulas. It suits people who hear the word blockchain a lot but haven't grasped what problem it's trying to solve.Think of a shared ledger of transactions, with copies kept by different participants. The hard part isn't copying the ledger; it's agreeing which entry is valid when not everyone trusts everyone else. The book's step-by-step approach helps you organize exactly these kinds of concepts.We recommend it for understanding the logic of blockchain, not for instructions on using wallets or evaluating coins. If your main question is “how does this technology work?”, it's a more focused choice than a business story.3. Mastering BitcoinMastering Bitcoin: Programming the Open Blockchain by Andreas M. Antonopoulos is aimed mainly at readers who want to move from description to mechanism. It covers topics such as cryptographic keys, transactions, wallets and the architecture of the peer-to-peer network.Its value lies in the fact that it explains how Bitcoin works at a technical level. If you're a developer or comfortable with technical material, you can use it as a reference book, returning to specific chapters when questions come up.Without the relevant background, the code examples and the details can be tough going. Check the edition carefully: the link above points to a specific older edition and shouldn't be taken as a reference to the latest one. Commands and tools need cross-checking against current documentation.4. Bitcoin BillionairesBitcoin Billionaires by Ben Mezrich follows the Winklevoss twins, from their dispute with Mark Zuckerberg to their involvement with Bitcoin. It's a narrative book, focused on people, conflicts and the business environment.We keep it on the list because the story helps us understand how a community grew around a technology. It reads differently from a manual and can work as a break between more demanding chapters of technical study.Here, though, a clear distinction is needed: a success story is not a recipe for repeating it. The story of specific people doesn't capture all the failures, losses and risks of the same period. We read it as history, not as an investment guide.5. The Truth MachineThe Truth Machine: The Blockchain and the Future of Everything by Michael J. Casey and Paul Vigna widens the discussion beyond Bitcoin. It looks at how blockchain could affect the way data and assets are recorded and exchanged.It suits the reader interested in economics, business and the question of trust. It makes you think about when we need an intermediary and when a shared record-keeping system could reduce that need.The title calls for a critical reading. Blockchain doesn't guarantee that the original data is true: a piece of false information can be recorded just as easily. Also, the possibilities the authors describe should be kept separate from applications that have proven useful in practice.How to check a book before you choose itStart with the table of contents and any available sample. If every other sentence sends you looking up terms, you may need an introductory book first. If you already know the basics, look for specific chapters that answer your questions.Also check the language and the specific edition. The titles here are listed in English; we can't confirm that a Greek translation is available for each of them. Nor does an author's Greek heritage mean their book is published in Greek.Finally, some material ages slowly and some ages fast. The basic principles of cryptography remain useful, but instructions about platforms, apps and regulations may be out of date. A book that promises guaranteed profits makes us more cautious, not more optimistic.What readers in Greece need in additionNone of these titles replaces up-to-date information on Greek tax obligations or the European MiCA regulatory framework. For questions about reporting transactions, you need the current guidance from AADE (Greece's Independent Authority for Public Revenue) and professional advice based on your own situation.You also need separate guidance on security. Your private key, which authorizes transactions, and your seed phrase (recovery phrase), which is used to restore many wallets, must never be shared with anyone. Not even with someone who presents themselves as support and promises to help you put what you've read into practice.Our viewWe think the best starting point for most people is one introductory book followed by a second, more targeted pick. Lewis offers the broadest context, Drescher helps with the logic of blockchain and Mastering Bitcoin opens the door to technical study.Narrative and economics books add perspective, as long as we don't mistake them for proof about the future. For us, a good crypto book is worth it when it helps you ask better questions, not when it gives you certainties about the market.Frequently asked questionsWhich crypto book is suitable for beginners?We recommend The Basics of Bitcoins and Blockchains for a general introduction. If you're mainly interested in how blockchain works without code, Blockchain Basics is more focused.Do I need to know programming?Not for the introductory and narrative books on the list. With Mastering Bitcoin, programming knowledge helps a lot with the technical chapters and the examples.Are these books available in Greek?We can't confirm a Greek edition for every title. Check the language, the publisher and the translator in the bookstore listing before you choose a copy.Is an older Bitcoin book still useful?Yes, for the basic principles and the historical context. Technical instructions, services and legal references need cross-checking against current sources.Can these books tell me which cryptocurrency will go up?No. No book can guarantee future returns. Their value lies in understanding the technology, the history and the risks.

The Bitcoin halving controls Bitcoin's inflation and value by cutting miners' rewards every 210,000 blocks, which affects the supply of new bitcoins.

The idea behind Kaspa (KAS) is to build a Nakamoto-style system that runs faster, limited only by the speed of the internet.

Bitcoin is digital money that can be sent over the internet without a bank having to approve the transaction. It runs on a decentralized network of computers, which checks and records transactions in a public ledger, the blockchain. Its currency is denoted BTC and is not issued by any central bank.What is Bitcoin and who created it?Bitcoin went live in 2009, after Satoshi Nakamoto published its technical description. The name is a pseudonym, and the real identity of the creator, or group of creators, remains unknown.The original idea was a peer-to-peer electronic payment system. In other words, two people should be able to transfer value without relying on a central administrator that keeps the books and decides which payments are allowed.The word Bitcoin usually describes both the network and its currency. “Bitcoins” are not a different product. They are the units of value transferred within this system.BTC and satoshisYou don’t need to own a whole bitcoin. Each BTC is divisible into 100 million satoshis, so a transfer can involve a very small fraction of one.The protocol’s current rules set a maximum supply of 21 million BTC. This doesn’t mean they have all been created already, nor that the limited supply guarantees a rising price.What does it mean that it is decentralized?At a bank, your balance exists in a system managed by that institution. In Bitcoin, many independent computers keep copies of the history and check that the same rules are followed.The code is publicly available, and anyone with the right equipment and connection can run a node. There is no central switch that controls the whole network.That doesn’t mean all participants have the same role or the same influence. Large mining pools, exchanges and service providers can create concentrations of power, but they don’t automatically gain the right to change the rules for everyone.How Bitcoin and the blockchain workThink of a shared ledger, copies of which are kept by people in different parts of the world. The difference from a shared document is fundamental: no one can simply open the history and change whatever they want.The blockchain organizes transactions into groups, called blocks, that are cryptographically linked to each other. As a result, a change to older data is detectable, and reversing confirmed history requires computational work.Who checks the transactions?Full nodes independently check transactions and blocks against Bitcoin’s rules. Among other things, they check that there is a valid digital signature and that the coins being spent haven’t already been used.This solves the problem of double spending: the attempt to pay two different recipients with the same digital money. No vote of all users is needed for every payment; the nodes apply common rules and reject anything that breaks them.Confirmations and waiting timeWhen a transaction is included in a block, it gets its first confirmation. Each subsequent block built on top of it adds another, usually making it harder to reverse.The network targets a new block roughly every ten minutes on average, not exactly every ten minutes. How long a payment takes also depends on congestion and on the fee the sender offers.What is Bitcoin mining?Mining is the process by which new blocks are proposed and new BTC is issued according to the protocol. Miners compete using specialized machines known as ASICs.They don’t solve useful mathematical equations, as is often claimed. They perform repeated hashing computations, looking for a result that meets the network’s difficulty target. This is the proof of work mechanism.The miner who finds a valid block can receive the set reward of new BTC and the fees of the transactions in it. The issuance of new coins is cut periodically by halving the block reward, known as the halving. Nodes still reject a block that breaks the rules, even if it was produced with expensive equipment.Mining requires electricity, cooling and capital. For someone in Greece, the cost of electricity is a critical factor, and an ordinary computer is not practically competitive Bitcoin mining equipment. Profitability is not a given.How a Bitcoin wallet worksA digital wallet doesn’t store coins the way a wallet holds banknotes. It manages the private keys that allow you to sign transactions and prove your right to spend.A Bitcoin address can be shared to receive payments. The private key, by contrast, must stay secret. Many wallets provide a seed phrase (recovery phrase) that can restore access; anyone who gets hold of it can also take control of the funds.With self-custody, you control the keys and take on the job of protecting them. When BTC is held on an exchange, the keys are usually controlled by the company. It is more convenient, but it adds provider risk.A transaction in practiceThe recipient gives the sender an address or a QR code.The sender checks the address, network, amount and fee.The wallet signs the transaction and broadcasts it to the network.The transaction is checked and waits to be included in a block.The recipient waits for the number of confirmations they consider appropriate for that payment.There is no central customer service that can cancel a confirmed transfer to the wrong address. That’s why checking before you send really matters.Where is it used and where does its value come from?Bitcoin is used to transfer value, for international payments and, by some holders, as a long-term asset. However, it isn’t accepted in every store, and the base chain doesn’t always offer cheap micropayments. The Lightning Network, a layer 2 network, aims for faster and cheaper payments, with additional technical requirements.Its price in euros is set by supply and demand in the markets. Limited issuance, transferability and trust in how the network works all contribute to demand, but there is no guaranteed value or return.The comparison with gold is mainly about scarcity, not any guarantee of stability. Think of a coffee priced in euros: if it is paid for in BTC, the merchant takes on exchange-rate risk until they convert it.The risks and what applies to users in GreecePrice volatility can lead to large losses. There are also scams, stolen seed phrases, malicious apps and the risk of exchanges going insolvent. The security of the network does not guarantee the security of every service that uses the Bitcoin name.Bitcoin is pseudonymous, not fully anonymous. Transactions are public, and addresses can be linked to identities, especially through services that verify their customers’ identity.For users in Greece, the EU’s MiCA regulation sets rules for crypto-asset service providers. It doesn’t turn BTC into a bank deposit, nor does it eliminate the risk of loss. Tax treatment needs to be checked against the current guidance of AADE (Greece’s Independent Authority for Public Revenue) and each taxpayer’s circumstances; keeping a record of your transactions and receipts helps you document your position.Our viewAt Cryptonomy, we believe Bitcoin’s real innovation is transferring digital value under public rules, without a single administrator. That is technologically interesting regardless of the day-to-day price moves.But we don’t overlook its energy consumption, its limitations for payments or the responsibility of custody. Decentralization gives you more autonomy, but it doesn’t come with a safety net. In any case, we keep understanding the technology separate from expecting a profit.Frequently asked questionsWhat is Bitcoin, in a nutshell?It is a digital currency and payment network with no central bank. Transactions are checked by computers that follow common rules and are recorded on the blockchain.Do I need to buy a whole bitcoin?No. One BTC is divisible into 100 million satoshis, so you can hold or transfer a fraction of one.Is Bitcoin anonymous?Not fully. Addresses don’t necessarily show a name, but the transaction history is public and can be linked to individuals.Can I lose my bitcoin?Yes. Losing your keys without a backup, theft, a mistaken transfer or a provider’s collapse can all lead to losing access or funds.How much does a Bitcoin transfer cost?The fee on the base chain depends mainly on how much space the transaction takes up and on the demand for block space, not simply on the amount. An exchange may charge a separate withdrawal fee.

With more than 38 million inscriptions so far, the Bitcoin Ordinals protocol opens new horizons in the world of NFTs by bringing them directly onto the Bitcoin blockchain.

Bitcoin is the leading cryptocurrency, worth $500 billion. It has its limitations, but sidechains solve some of its problems and make it more efficient.

Bitcoin is criticized for its slow development, while altcoins compete with it. The Drivechain upgrade would expand Bitcoin’s use cases with independent sidechains.

Satoshi created Bitcoin as an independent, decentralized digital currency, offering an alternative to traditional financial systems.
