The Bitcoin Journey
  • Why learn about Bitcoin?
    • Introduction
    • Table of contents
    • Changing nature of money
    • Role of money in protecting human rights
  • Trust problems with our money
    • Introduction
    • Banks: insolvencies, confiscation, and censorship
      • Gunman takes hostages at Beirut bank
      • Nigerian aid group finds sovereign lifeline in Bitcoin
      • Nigeria's central bank freezes accounts of police brutality protesters
      • Chinese depositors left in dark as three local banks freeze deposits
      • Freezing of bank account to shut down pro-democracy outlet
      • Hong Kong bank account freezes rekindle asset safety fears
      • Belarus tells banks to seize money raised to help out protesters
      • Banks have started to freeze accounts linked to Ottawa protests
      • Whose bank accounts can be frozen through the Emergencies Act?
      • Kremlin critic Navalny's bank accounts frozen
      • Long lines at Myanmar banks after coup
      • The Cyprus banking crisis and its aftermath
      • Bailout blackmail claims Cyprus president
      • Afghan central bank says U.S. plan for frozen funds an 'injustice'
      • Afghanistan sanctions from a first-person view
    • Central banks: money supply and currency debasement
      • Inflation by Wikipedia
      • Monetary inflation across the world
      • Inflation affecting Argentinian citizens
      • Inflation affecting Turkish citizens
      • Egypt devaluates currency by 48%
      • Bitcoin has saved my family
      • Problems with the CFA
      • Role of money in protecting human rights
      • Hanke's inflation rates
      • Milton Friedman on inflation
      • Inflating away sovereign debt in developed countries
      • How inflation is disproportionally affecting the poor
      • Financialization of an economy
    • A note on CBDCs
      • Impact of CBDCs different across the world
  • So, why do we need banks?
    • Introduction
    • Hard money and gold
      • Money and hardness
      • Gold as the hardest money (p1)
      • Gold as the hardest money (pt2)
      • Hard money survives
    • Problems with gold and resulting centralization
      • On centralization of gold
      • Layered money speeding up commerce
      • Global gold standard
      • The order of technology leading to centralization
      • Nations inflating their debt away
    • Abandoning hard money
      • Abandoning the gold standard
      • Abandoning the gold standard (pt2)
      • Breaking the gold standard completely in 1971 pt1
      • Breaking the gold standard completely in 1971 pt2
      • WTF happened in 1971?!
    • Digital money and eCommerce
    • Summary by Lyn Alden
  • What if?
    • Hayek on money the government can't stop
    • The first email
    • The first post
    • The Bitcoin whitepaper
  • How does Bitcoin work?
    • Introduction
    • Computers, code, and a ledger
      • Role of nodes
      • Full nodes
    • Mining and proof-of-work
      • Reaching decentralized consensus
      • Reaching decentralized consensus (pt2)
      • Dealing with conflicts
    • Where do bitcoins come from?
      • Bitcoin's money supply
      • Difficulty adjustment
    • The superpowers of a Bitcoin user
      • Public addresses and private keys
      • Signing transactions
      • Wallets and mnemonic phases
  • What is Bitcoin?
    • Outro
  • Getting started with Bitcoin
    • Using Bitcoin
      • Obtaining bitcoin
      • Storing bitcoin
      • Paying with bitcoin
    • Working for Bitcoin
    • Learning more about Bitcoin
  • Contribute
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Dealing with conflicts

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Last updated 2 years ago

This video is an additional video that you can watch if you wish to understand how the network resolves the issue of conflicting blocks. It happens every now and again that two valid blocks are produced at close to exactly the same time and that some nodes on the network receive them in a different order than other nodes. Then what? This video is rather technical but dives into how the protocol of the Bitcoin network resolves this issue.

Creator
Time
URL

Andreas Antonopoulos

11min

Takeaway The longest chain of valid blocks (the one with the most proof of work) is considered the true one. If two valid blocks are propagated across the network at the same time and there is temporary disagreement among nodes, the disagreement automatically gets resolved by miners voting with their computing power on which chain to work. Because this disagreement happens every now and again at the very edge of the blockchain (last blocks), Bitcoin transactions are considered fully confirmed after 6 blocks, although fewer confirmations are generally okay.

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