๐Ÿ“–
Web3 Encyclopedia
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  • ๐Ÿ˜€Evolution from Web 1.0 to Web 3.0
    • Web 1.0 Web 2.0 Web 3.0
    • Key Features
    • Current Limitations
    • Future of Web 3.0
    • Learn: What Is Web3?
    • Learn: Will Every Brand Have a Web3 Strategy?
    • Learn: Big Ideas in 2023
    • Learn: The Web3 Paradox: Why Scaling Usage Alone Won't Lead to Mass Adoption?
    • Learn: Is Web3 A Marketing Buzz or Tech Revolution?
    • Learn: What is the relationship between blockchain and Web3?
    • Learn:Empowering Women in Web 3.0: The Role and Contributions of Women in Blockchain, DeFi, and dApp
    • Learn: Web 3.0 and the Future of E-Commerce
    • Learn: 12 ways ecosystem projects can attract more developers
    • Learn: How Web3 is Impacting Education?
    • Learn: Web3 And The Future Of Digital Advertising
    • Learn: Web3โ€™s impact on personalization, trust and engagement
    • Learn: Web3-Powered Identity Management -- Unlocking the Benefits of Decentralization
    • Learn: Why Web2 companies fail in Web3 while others made it?
    • Learn: To Identify or Not in a Web3 World?
    • ๐Ÿคซ[Insider Series] McKinsey x Web3
    • TL;DR ๐Ÿ‘€
  • ๐Ÿ’ฒBlockchain Fundamentals
    • Why is Blockchain So Popular?
    • Introduction to Blockchain
    • Blockchain Misconceptions
    • Blockchain vs Bitcoin, Database, Cloud
    • Consensus Mechanism
    • Public and Private Keys
    • Hash Functions and Cryptography
    • Sharding
    • Types of Blockchains: PoW, PoS and Private
    • Understanding Cryptocurrency
    • Coins vs Tokens
    • Blockchain Trilemma
    • Legality
    • Learn : Googleโ€™s Cloud Based Blockchain Node Service
    • Learn: How Blockchain, Digital assets, and Web3 Unlock Financial Inclusion Globally
    • Learn: Will Chinese-Made Crypto Soar Higher?
    • Learn: What Does MiCA Mean for Crypto in Europe?
    • Learn: Unraveling the Intricacies of Blockchain Forensics and Asset Tracking
    • Learn: Promising blockchain use cases in healthcare industry
    • Learn: The Role of Blockchain in Authenticating and Provenance Art
    • Learn: Blockchain-Based Digital Identity: Benefits, Risks, and Implementation Challenges
    • Learn: The Future of Energy Supply Chains
    • Learn: Revolutionizing smart contracts and cryptocurrency
    • Learn: Nigeria goes blockchain
    • Learn: A Game Changer for Online Gaming?
    • Learn: Is blockchain technology ready for high-storage applications?
    • Learn: Will Blockchain Technology Mark a Turning Point in Fraud Prevention?
    • Learn: Why ZK-rollups need data availability?
    • Learn: How will generative AI disrupt blockchain?
    • Learn: A New Blockchain for Generative AI?
    • TL;DR ๐Ÿ‘€
  • ๐ŸŸ๏ธWeb3 Utilities
    • Decentralized Applications (dApps)
    • Cross-chain Bridges
    • DAO
    • Artificial Intelligence
    • Learn: Is Community-building Essential for Web3 Startups?
    • Learn: โ€˜Decentralization Theaterโ€™
    • Learn: Crypto and AI- A yay or nay combination?
    • Learn: Dissecting the DAO
    • Learn: What is motivating Lido DAO to rise?
    • Learn: How to Turn Your Community Into a DAO?
    • Learn: The Key to Decentralized Decision Making
    • Learn: How Web 3.0 can disrupt the supply chain industry?
    • TL;DR ๐Ÿ‘€
  • ๐Ÿช™Bitcoin
    • What is Bitcoin
    • Bitcoin's Blockchain Technology
    • UTXO Model and Transaction Fees
    • Bitcoin Mining and Mempool
    • Learn: What is bitcoin mining?
    • What are Hard Forks and Soft Forks
    • What is SegWit and the Lightning Network
    • Bitcoin Ecosystem
    • Can Bitcoin be Destroyed? Game Theory and Network Attacks
    • Learn: Crypto token supplies explained
    • Learn: What is crypto tax-loss harvesting, and how does it work?
    • Learn: Can Crypto Go Green? How to Invest in Eco-Friendly Cryptocurrencies
    • Learn: Why Did FTX Collapse? Hereโ€™s What to Know.
    • Learn: How Sam Bankman-Fried swindled $8 billion in customer money?
    • Learn: How much is Bitcoin worth today?
    • Learn: The Costs of Running a Bitcoin Node In Nigeria
    • Learn: Has 2022 Left Any Crypto Positives?
    • Learn: How Crypto Exchanges Can Be Free of Risk?
    • Learn: Greed, Lies and FTX: Is Crypto a Force for Good or Evil?
    • Learn: Is Crypto a Cultural Movement?
    • Learn: What are the consequences of cryptoโ€™s ongoing regulatory process?
    • Learn: Beyond the Crash and Embracing NFTs?
    • Learn: Understanding crypto bag holders and their mindset
    • Learn: Inscriptions: Just A Fad, Or A Real Threat To Bitcoin Becoming Decentralized Money?
    • Learn: How Bitcoin Ordinals Can Change the Future Of Mining?
    • Learn: What is a supernet?
    • Learn: Bitcoin Miners Celebrate 10 Years Since First ASIC, What Changed Since Then?
    • Learn: Bill Vs. CBDC โ€“ Why This US Congressman Wants To Block The Fed From Issuing A Digital Dollar?
    • Learn: Why Bitcoin Will Blow Peopleโ€™s Minds In 2025?
    • Learn: How the Howey Test Sheds Light on Cryptocurrency's Regulatory Gray Area
    • Learn: Cryptocurrency vs AI: A Complex Debate
    • Learn: Where the U.S. Government Went Wrong in Regulating Crypto?
    • Learn: The Nostr Privacy Paradox
    • Learn: Do algorithmic stablecoins have a future as centralized coins are under scrutiny?
    • Learn: Is Bitcoin Set To Revolutionize The Financial World With Its Superior Purchasing Power?
    • Learn: What is Shibarium, and what does it mean for Shiba Inu?
    • Learn: What is a crypto dusting attack?
    • Learn: Is the Adoption of Central Bank Digital Currencies (CBDCs) the Future?
    • Learn: How Artificial Intelligence Could Revolutionize Crypto?
    • Learn: Whatโ€™s next for EUโ€™s crypto industry as European Parliament passes MiCA?
    • Learn: Why the EU Has MiCA and the U.S. Has Securities Law Confusion?
    • Learn: Six New Projects Looking to Mitigate Bitcoin Miningโ€™s Energy Footprint
    • Learn: Who on Crypto Twitter chose not to pay for a blue checkmark?
    • Learn: What is the wash-sale rule in Crypto?
    • Learn: What is Pepecoin and can it flip memecoins Dogecoin and Shiba Inu?
    • Learn: Can you recover stolen Bitcoin from crypto scams?
    • Learn: What the โ€˜anti-mining billโ€™ means for the crypto industry in Texas?
    • Learn: Does the US have a crypto โ€˜tax loopholeโ€™ problem?
    • Learn: How users can stay protected?
    • Learn: How Crypto Revolutionize Cheaper and Faster Transactions?
    • Learn: Can NFTs and CFDs be BFFs?
    • Learn: A PR expertโ€™s tips for memecoin projects
    • Learn: Why politicians aren't convinced about the Digital Euro?
    • Learn: How A 90-Year Old TA Theory Predicted The Sudden Bitcoin Boom?
    • Learn: Social Trading Platforms and CFDs: A New Paradigm in Investment
    • Learn: How could the Chinese economic crisis impact Bitcoin and crypto?
    • Learn: How do they compare: Bitcoin IRA vs. traditional IRA?
    • Learn: Why Tokenized Assets Are Safer During a Banking Crisis?
    • TL;DR ๐Ÿ‘€
  • ๐Ÿ›ข๏ธEthereum
    • Bitcoin vs Ethereum
    • What can Ethereum do?
    • What is Ether (ETH)?
    • What's Unique About ETH?
    • What are Smart Contracts?
    • Energy Consumption?
    • Ethereum Virtual Machine (EVM)
    • Pros & Cons of Smart Contracts
    • Decentralized Applications (dApps)
    • Ethereum Token Standards (ERC-20, ERC-721 and ERC-1155)
    • Evolution of Ethereum
    • How to Get Your First Ethereum
    • Learn: Next Ethereum Upgrade โ€” Shanghai Upgrade
    • Learn: Tipping Scale for Crypto Adoption: Usability vs. Accessibility
    • Learn: Major Publicly Traded U.S. Bitcoin Miner Files For Chapter 11 โ€“ Impact On The Market?
    • Learn: 5 altcoin projects that made a real difference in 2022
    • Learn: How Tether Can Be a More Stable Stablecoin?
    • Learn: Are the Ethereum Killers Still Deadly?
    • Learn: What Ethereum Tech Trends Are Weathering the Bear Market?
    • Learn: How Ethereumโ€™s token burns are making it a deflationary cryptocurrency?
    • Learn: A few things to know about Ethereum's Shanghai Upgrade
    • Learn: The Role of Enterprise Ethereum
    • Learn: Understanding Layer 2 Scaling Solutions for the Ethereum Network
    • Learn: The Battle of Giants: Bitcoin vs Ethereum
    • Learn: Cryptography, Smart Contracts and Distributed Networks
    • Learn: The Memecoin Grift and How It Threatens Ethereum Culture
    • Learn: What Is Ethereumโ€™s โ€˜Data Availability' Problem, and Why Does It Matter?
    • TL;DR ๐Ÿ‘€
  • ๐Ÿ‘›Wallet
    • What is a Blockchain Wallet?
    • Hardware / Software Wallet
    • How to Get Your First Cryptocurrency
    • Setting up Metamask Wallet
    • Learn: How to connect the Avalanche network to MetaMask?
    • Learn: How to pass on your crypto when you die?
    • Learn: What are hierarchical deterministic (HD) crypto wallets?
    • Learn: Pros and Cons of Digital Wallets
    • Learn : How Web 3.0 Wallets Are Redefining Digital Asset Security?
    • Learn: Open source: Buzzword or real security for crypto wallets?
    • TL;DR ๐Ÿ‘€
  • ๐ŸŒ•New & Rising Protocols
    • Binance
    • NEAR
    • Solana
    • Fantom
    • Polygon
    • Cardano
    • Polkadot
    • Cosmos
    • Harmony
    • Cronos
    • Optimism
    • Terra
    • Who Will Win the L1 Wars?
    • Learn: New Layer 1 Blockchains Are Expanding the DeFi Ecosystem But No Eth Killers Yet
    • Learn: Is an Increased Focus on Layer-2 Scaling and ZK Technology Justified?
    • Learn: What Are the Stakes in the SEC vs. Ripple Case?
    • Learn: What is The Graph, and how does it work?
    • TL;DR ๐Ÿ‘€
  • ๐Ÿ“ˆDecentralized Finance (DeFi)
    • CEX vs DEX
    • CeFi vs DeFi
    • Algorithmic Stablecoins
    • Airdrop
    • Liquidity Pool
    • Impermanent Loss
    • Swapping
    • Wrapped Token
    • Arbitrage Opportunities
    • Staking
    • Yield Farming
    • Total Value Locked (TVL)
    • Gas Fees
    • Lending & Borrowing
    • Useful Tools
    • Activity: Uniswap & Pancake Swap
    • Learn: Automated Market Makers (AMMs) in DeFi
    • Learn: Crypto Moving towards ESG: What Is Regenerative Finance (ReFi)
    • Learn: What Is dYdX? Understanding the Decentralized Crypto Exchange
    • Learn: It's A Wrap - DeFi in 2022
    • Learn: Why DeFi should expect more hacks this year?
    • Learn: The Security Challenges of DeFi
    • Learn: The Promising Future of Decentralized Social Media on Web 3.0
    • Learn: Can CBDCs, Tokenized Deposits, Stablecoins and DeFi Coexist?
    • Learn: The Increasing Popularity of DeFi and Its Potential to Disrupt Traditional Finance
    • Learn: The future of DeFi is ReFi
    • Learn: DeFi aggregation
    • TL;DR ๐Ÿ‘€
  • ๐Ÿ™ˆNon-Fungible Token (NFT)
    • What are NFTs?
    • Case Study
    • Storage
    • Who are the Players?
    • NFT Marketplace
    • NFT Useful Resources
    • Activity: Mint Your Own NFT
    • Learn: How You Can Prevent Hackers From Stealing Your NFTs?
    • Learn: What Is an NFT Floor Price?
    • Learn: Should Bored Ape buyers be legally entitled to refunds?
    • Learn: Chinaโ€™s view of NFTs different from rest of the worldโ€™s
    • Learn: NFTs IRL: How Digital Collectibles Are Forging Offline Experiences
    • Learn: How NFT Brands Can Cut Through The Noise
    • Learn: How Web3 disrupts the music sector?
    • Learn: Unlockable content in NFTs
    • Learn: Why Meta Matters in NFTs?
    • Learn: Should NFT Marketplaces Become Centralized?
    • Learn: Hermรจs vs. MetaBirkins: The NFT Case That Could Have Major Trademark and Artistic Consequence
    • Learn: What are phygital NFTs, and how do they work?
    • Learn: What is NFT ticketing and how does it work?
    • Learn: Why Solana NFT marketplace is seeing less active users?
    • Learn: NFTs and Intellectual Property
    • Learn: How AI Is Changing Artistic Creation and Challenging IP Laws?
    • Learn: The Future of NFTs: Exploring Dynamic NFTs and Their Versatile Use Cases
    • Learn: NFTs in the event and ticketing industry
    • Learn: What is NFT rarity, and how to calculate it?
    • Learn: What happens to your NFTs when you die?
    • Learn: Dogecoin-Like Spike in Milady NFTs After Elon Muskโ€™s Tweet, But Will It Last?
    • Learn: What are NFT royalties, and how do they work?
    • Learn: How developers aim to store crypto inside NFTs?
    • Learn: Generative Art NFTs: What Are They & Why Are They So Popular?
    • TL;DR ๐Ÿ‘€
  • ๐Ÿ’—Metaverse
    • What is the Metaverse?
    • Metaverse Economy
    • Metaverse Companies
    • GameFi
    • Learn: Are We in the Metaverse Yet?
    • Learn: Can the Metaverse exist without blockchain?
    • Learn: Can the Metaverse Facilitate Sustainable Growth of Defi Systems?
    • Learn: What is the role of biometrics in the metaverse?
    • Learn: Can metaverse be the future court?
    • Learn: Metaverse Fashion Is on the Rise, but for Whom?
    • Learn: Sustainability in the Metaverse: Challenges and Opportunities
    • Learn: How To Build A Responsible Metaverse?
    • Learn: What is a VTuber, and how do you become one?
    • Learn: How proof-of-identity provides human experiences?
    • Learn: The โ€œMetaverseโ€ Next Frontier for Business: Impact And Challenges
    • Learn: The 5 Biggest Misconceptions About The Metaverse
    • Learn: Why culture and ownership are critical to the metaverse?
    • TL;DR ๐Ÿ‘€
  • ๐Ÿ‘พCareer in Web3 (coming soon)
    • Developers
    • Moderators
    • Community Managers
    • UI/ UX Designers
    • Digital Fashion Designers
  • ๐ŸŒฑSustainability (Coming Soon)
    • Industry Effort
    • Co-author
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On this page
  • What is the UTXO model?
  • What the networks sees
  • What a user sees
  • Goals of the UTXO model
  • Downfalls of the UTXO model
  • Is Bitcoin a UTXO?
  • Is Ethereum a UTXO?
  1. Bitcoin

UTXO Model and Transaction Fees

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Last updated 2 years ago

What is the UTXO model?

An unspent transaction output (UTXO) is the technical term for the amount of digital that remains after a cryptocurrency transaction. You can think of it as the change you receive after buying an item, but it is not a lower denomination of the currency โ€” it is a transaction output in the database generated by the network to allow for non-exact change transactions.

The portion of the whole cryptocurrency not spent in a transaction is used as an accounting measure. Like double-entry accounting, each transaction has an input and an output.

For example, imagine that one BTC is a bucket full of coins. Each coin represents a UTXO. If you purchase something from Bob for .5 BTC, the network will give Bob the entire bucket of coins and send back the .5 BTC you're owed in "change". You now have a UTXO worth .5 BTC that cannot be divided into smaller amounts.

What the networks sees

A cryptocurrency transaction is a transfer of information within a database. Cryptocurrency is divided into small chunks, which are stored throughout the entire database and called unspent transaction outputs. Nearly all transactions create UTXOs because most are not in increments of whole numbers.

This means spending does not take place using a single data byte. Instead, multiple fractions of cryptocurrency are retrieved to fulfill a spending request.

: UTXOs are not cryptocurrency denominations, like satoshi for Bitcoin (BTC) or gwei for ether (ETH); however, UTXOs can be measured in these denominations.

When you initiate a transaction through your wallet, UTXOs with your information are located, unlocked, and the new owner's information is associated with the UTXO you transferred to them. They are locked once again, and that user can use them in transactions via the same process.

As transactions continue, the database becomes populated with records of ownership changes. The outputs are fractions of cryptocurrency you sent to someone that aren't spent. They are recorded into the database as inputs in fractions of cryptocurrency.

What a user sees

When you decide to spend your bitcoin, you only see the amount you've spent deducted and the amount leftover in your wallet. For you, it's similar to using a $1 bill on a $.50 item โ€” you're given change, you put it in your pocket and go about your day.

Goals of the UTXO model

The UTXO model is used in many cryptocurrencies because it allows users to track ownership of all portions of that cryptocurrency. Because cryptocurrencies were created with anonymity in mind, UTXOs are associated with the public addresses visible to the entire network.

Users cannot be identified from their ownership โ€” unless they advertise their address โ€” but the model allows for transparency through the addresses.

Downfalls of the UTXO model

Is Bitcoin a UTXO?

Unspent transaction outputs are part of the distributed database technology behind Bitcoin and other cryptocurrencies. Bitcoin uses UTXOs, but it is not a UTXO.

Is Ethereum a UTXO?

Ethereum is a cryptocurrency, so it is not a UTXO. Additionally, Ethereum uses an account-based approach with account balances, so there are no UTXOs in the Ethereum Virtual Machine.

Source

The profusion of small coins within a cryptocurrency's network makes certain transactions uneconomic. This is because it may cost more to transact than the actual of the product being purchased with cryptocurrency. For example, it doesn't make sense to buy a $2 cup of coffee if the transaction fee on bitcoinโ€™s network is greater than the price of the coffee.

1) . By Updated April 15, 2022Reviewed by

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currency
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JAKE FRANKENFIELD
KHADIJA KHARTIT