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Blockchain technology

How to Confirm Your Bitcoin Node Is Active

To confirm a Bitcoin node is active, check sync progress, recent block updates, peer connections, and log activity instead of only seeing if the app is open.

2026-08-03

How to Confirm Your Bitcoin Node Is Active

Are 3 Confirmations Enough for Bitcoin Cash?

For Bitcoin Cash, 3 confirmations can be enough for low-risk payments, but bigger transfers and unclear counterparties call for more caution.

2026-08-03

Are 3 Confirmations Enough for Bitcoin Cash?

What Is a 51% Attack? Meaning, Cost, and Examples

A 51% attack happens when a single person or group controls over half of a blockchain network’s computing power. With this level of control, they can block transactions, reverse them, and even double-spend coins. It represents a big threat to the security and trust of decentralized systems. While larger networks like Bitcoin and Ethereum are better protected due to widespread mining power, smaller blockchains with fewer participants face a greater risk. Key Takeaways Both Proof-of-Work (PoW) and Proof-of-Stake (PoS) blockchains can be vulnerable to 51% attacks, but the attack method differs for each system. Successful 51% attacks enable attackers to reverse transactions and double-spend coins, which can damage trust in the network. The cost of a 51% attack varies widely; it’s generally too expensive on large networks but feasible on smaller or newer blockchains. Preventing 51% attacks often involves enhancing network decentralization, security protocols, and community participation. Real-world examples like the Bitcoin Gold and Ethereum Classic attacks illustrate the potential consequences for crypto prices and security.

2026-07-14

What Is a 51% Attack? Meaning, Cost, and Examples

What Is a Blockchain Explorer, and How Do You Use It?

A blockchain explorer is a tool that gives you a window into a blockchain’s activity. From tracking transactions to viewing blocks, wallet addresses, and network metrics, blockchain explorers make blockchain networks transparent and accessible. These explorers let you see exactly what’s happening on the blockchain — down to the second a transaction is confirmed.

2026-07-06

What Is a Blockchain Explorer, and How Do You Use It?

Why Bitcoin Is Hard to Trace, Not Impossible

Bitcoin is not untraceable. The hard part is linking public wallet addresses to real people outside the blockchain.

Why Bitcoin Is Hard to Trace, Not Untraceable

Bitcoin is not untraceable. It shows addresses, amounts, and history in public, while real identity depends on off-chain links.

How a Bitcoin Transaction Actually Works

A bitcoin transaction is a signed transfer broadcast to the network, checked by nodes, mined into a block, and confirmed on the blockchain.

Who Releases Bitcoins? It’s the Protocol, Not a Company

Who releases bitcoins? No company issues them. New BTC enters circulation through block rewards set by the Bitcoin protocol and earned by miners.