Crypto Terms:
Letter O
What is Optimistic Oracle?
Meaning:
Optimistic Oracle -
a type of oracle in which real-world data is combined with decentralized systems, and the data is assumed to be correct if it hasn't been disputed for a specific amount of time.
Let's find out Optimistic Oracle meaning, definition in crypto, what is Optimistic Oracle, and all other detailed facts.
An oracle that combines real-world data with decentralized systems and in which the data is accepted as true (if it hasn’t been disputed for a certain period) is referred to as an optimistic oracle. The optimistic oracle is different from the price-feed oracle, which streams prices on-chain without recourse or error protection.
Optimistic oracles can be employed in different ways than to price-feed oracles due to their unique design. They can offer arbitrary data and long-tail information requests in addition to asset prices that price-feed oracles might not be able to support.
Since inaccurate data can be challenged, the optimistic oracle protects smart contracts and users from external data feed tampering. Other oracle systems are only as secure as their data stream, therefore this is a unique feature of optimistic oracles.
layer 2<\/strong> <strong>scaling solution<\/strong><\/a> that uses off-chain processing to reliably record layer 2 transactions. The mechanism distributes <strong>Merkle roots<\/strong> of the transactions that occur inside the rollup on a regular basis in order to refresh the \"state\" of the rollup on the key underlying chain. <\/p>\n<p>Before any changes are made to the state, <strong>a network of external validators holds the responsibility to ensure that the Merkle roots are accurate<\/strong>. If an anomaly occurs, the validator publishes a fraud-proof during the argument period, causing the system's configuration to be rolled back to its prior valid state.<\/p>\n<p>The major benefit of optimistic rollups over zero-knowledge alternatives is that they can back <a href=https://www.bitdegree.org/"//crypto//learn//crypto-terms//what-is-smart-contract/">smart contracts<\/strong><\/a> in the same way that the underlying smart contract-enabled blockchain does. The rollup's native support for smart contracts implies that apps can be deployed considerably more easily, without the need for further programming.<\/p>\n<p>However, the biggest drawback, on the other hand, is that it takes longer for layer 2 users to be able to deposit their cash back to the underlying blockchain when compared to <a href=https://www.bitdegree.org/"//crypto//learn//crypto-terms//what-is-zero-knowledge-rollup/">zero-knowledge rollups<\/strong><\/a>. It's a result of the fact that an optimistic rollup must depend on validators to verify the Merkle roots for fraud before the state can be changed. Therefore, there must be enough time for validators to verify and challenge the layer 2 activity.<\/p>","definition":"a scaling strategy for Ethereum that incorporates off-chain computation and state storage.","status":"published","meta_title":"What is Optimistic Rollup? Definition & Meaning | Crypto Wiki","meta_description":"Optimistic Rollup meaning: Optimistic Rollup - Optimistic rollups utilize off-chain processing to reliably record layer 2 transactions.","meta_keywords":null}"
:prev-section="{"id":564,"wikipedia_url":"https:\/\/en.wikipedia.org\/wiki\/Operating_system","level":"medium","author_id":1,"created_at":"2023-06-19T06:59:00.000000Z","updated_at":"2023-12-07T20:44:22.000000Z","slug":"what-is-operating-system-os","title":"What is Operating System (OS)?","section":"O","keyword":"Operating System (OS)","content":"<p>Operating System (OS) is a <strong>software program<\/strong> that manages the resources of a computer and allows communication between programs and computer hardware.<\/p>\n<p>In the past, there were no operating systems. Thus, every computer program had to include all of the code needed<strong> to run the program<\/strong>, connect it to the hardware, and show the actual function of the program. Therefore, computer programs were difficult to create and too complicated to operate. Not to mention the fact that each piece of software could only <strong>run on the computer for which it was created<\/strong>. However, operating systems were created to change that.<\/p>\n<h2>Functions of Operating Systems (OS)<\/h2>\n<p>There are various functions conducted by OS in order to achieve specific objectives. These objectives include:<\/p>\n<ul>\n<li><span style=\"color: #169179;\">Memory Management<\/span>. To run a process, it must first be loaded into the main memory where it will be executed. The <strong>memory is released after the process is finished<\/strong> and it can be used for other things. Thus, managing memory via allocating and deallocating it for the processes is the responsibility of the OS.<\/li>\n<li><span style=\"color: #169179;\">Process Management<\/span>. <a href=https://www.bitdegree.org/"//crypto//learn//crypto-terms//what-is-central-processing-unit-cpu/">CPU (one of the resources managed by OS) usually has <strong>a number of processes in the ready state<\/strong> at any given time. A processor, on the other hand, can only manage one process at a time. Thus, a CPU uses various techniques to ensure that operations have constant and uninterrupted access to resources. These techniques include <em>first-come, first-serve, round-robin, shortest job first, priority scheduling<\/em>, and so on.<\/li>\n<li><span style=\"color: #169179;\"><strong>File Management<\/strong><\/span>. Every computer has its own set of files, folders, and directory structures. The OS of the computer maintains and manages all of these. To keep track of the information of these files, a File Allocation Table (FAT) is used. The FAT <strong>keeps track of every detail of the file<\/strong>, including its name, size, type, and so on. Besides, the OS is also responsible for ensuring that the files are not opened by unauthorized people.<\/li>\n<li><span style=\"color: #169179;\">I\/O Device Management<\/span>. There are various <a href=https://www.bitdegree.org/"https:////en.wikipedia.org//wiki//Input//output/" target=\"_blank\" rel=\"nofollow noindex noopener\"><strong>I\/O devices<\/strong><\/a> in a system. Diverse procedures require access to these devices, however, the processes <strong>should not access these devices directly<\/strong>. Therefore, it is the responsibility of the OS to manage access authorization of I\/O devices.<\/li>\n<li><span style=\"color: #169179;\">Virtual Memory<\/span>. When the application's size surpasses the main memory, the OS is in charge of loading just the most frequently used pages <strong>into the main memory<\/strong>.<\/li>\n<\/ul>\n<h3>Most Popular Computer Operating Systems (OS)<\/h3>\n<ul>\n<li>Microsoft Windows – the most popular and frequently used operating system on computers. It runs on PCs and <a href=https://www.bitdegree.org/"https:////en.wikipedia.org//wiki//IBM_PC_compatible/" target=\"_blank\" rel=\"nofollow noindex noopener\"><strong>IBM-compatible<\/strong><\/a> systems.<\/li>\n<li>macOS – <strong>Apple's<\/strong> main operating system, which runs on both desktops computers and laptops.<\/li>\n<li>Linux – an open-source operating system that can be installed on PCs and IBM-compatible systems. It is used to generate a variety of Linux distributions, including <strong>Debian<\/strong>, Ubuntu, Slackware, and Red Hat.<\/li>\n<li>Chrome OS – the operating system that is pre-installed on <strong>Google Chromebooks<\/strong>.<\/li>\n<\/ul>\n<h3>Mobile Device Operating Systems (OS)<\/h3>\n<ul>\n<li>Android – the most widely used OS of the majority of well-known smartphone and tablet brands, except Apple.<\/li>\n<li>iOS – the OS of Apple smartphones and tablets.<\/li>\n<\/ul>","definition":"a software program that manages the resources of a computer.","status":"published","meta_title":"What is Operating System (OS)? Definition & Meaning | Crypto Wiki","meta_description":"Operating System (OS) meaning: Operating System (OS) - a software program that manages the resources of a computer.","meta_keywords":null}"
:model="{"id":876,"wikipedia_url":"https:\/\/en.wikipedia.org\/wiki\/Blockchain_oracle","level":"easy","author_id":1,"created_at":"2023-06-19T06:59:01.000000Z","updated_at":"2023-12-07T20:45:35.000000Z","slug":"what-is-optimistic-oracle","title":"What is Optimistic Oracle?","section":"O","keyword":"Optimistic Oracle","content":"<p>An <a href=https://www.bitdegree.org/"//crypto//learn//crypto-terms//what-is-oracles/">oracle that combines real-world data with <a href=https://www.bitdegree.org/"//crypto//learn//crypto-terms//what-is-decentralized-network/">decentralized systems<\/strong><\/a> and in which the data is accepted as true (if it hasn’t been disputed for a certain period) is referred to as an optimistic oracle. The optimistic oracle is <strong>different from the price-feed oracle<\/strong>, which streams prices <a href=https://www.bitdegree.org/"//crypto//learn//crypto-terms//what-is-on-chain/">on-chain without recourse or error protection.<\/p>\n<p>Optimistic oracles can be employed in different ways than to price-feed oracles due to their unique design. They can offer arbitrary data and <strong>long-tail information requests<\/strong> in addition to asset prices that price-feed oracles might not be able to support.<\/p>\n<p>Since inaccurate data can be challenged, the optimistic oracle protects <a href=https://www.bitdegree.org/"//crypto//learn//crypto-terms//what-is-smart-contract/">smart contracts<\/strong><\/a> and users from external data feed tampering. Other oracle systems are only <strong>as secure as their data stream<\/strong>, therefore this is a unique feature of optimistic oracles.<\/p>","definition":"a type of oracle in which real-world data is combined with decentralized systems, and the data is assumed to be correct if it hasn't been disputed for a specific amount of time.","status":"published","meta_title":"What is Optimistic Oracle? Definition & Meaning | Crypto Wiki","meta_description":"Optimistic Oracle meaning: Optimistic Oracle - a type of oracle in which real-world data is combined with decentralized systems, and the data is assumed to be correct if it hasn't been disputed for a specific amount of time.","meta_keywords":null,"author":{"id":1,"user_id":1,"created_at":"2023-05-03T14:30:55.000000Z","updated_at":"2023-05-11T07:18:20.000000Z","title":"Editor-In-Chief","slug":"aaron-s-editor-in-chief","description":"<p>Having completed a Master’s degree on Economics, Politics & Culture for the East Asia region, Aaron has written scientific papers with a comparative analysis of the differences between US’ Western and Japan’s Collective forms of capitalism, 1945-2020.<\/p>\n<p>With close to a decade of experience in the FinTech industry, Aaron understands all of the biggest issues and struggles that crypto enthusiasts face. He’s a passionate analyst who is concerned with data-driven and fact-based content, as well as that which speaks to both Web3 natives and industry newcomers.<\/p>\n<p>Aaron is the go-to person for everything and anything related to digital currencies. With a huge passion for blockchain & Web3 education, Aaron strives to transform the space as we know it, and make it more approachable to complete beginners.<\/p>\n<p>Aaron has been quoted by multiple established outlets, and is a published author himself. Even during his free time, he enjoys researching the market trends, and looking for the next supernova.<\/p>","user":{"id":1,"first_name":"Aaron","last_name":"S.","email":"aaron@bitdegree.org","email_sanitized":"aaron@bitdegree.org","email_verified_at":"2023-12-01T09:40:20.000000Z","must_verify_email":false,"is_registered_with_wallet":false,"status":"active","country":"LT","last_connected_ip":"88.119.132.125","image_id":2641,"referral_token":"05TMu2NysXOCn525","referred_by":null,"created_at":"2023-05-03T14:30:55.000000Z","updated_at":"2024-01-09T15:22:21.000000Z","full_name":"Aaron S."}}}"
:chapter-list="[{"id":1,"title":"Blockchain","slug":"blockchain","updated":null,"chapter":"crypto\/assets\/crypto-book\/chapters\/learn-blockchain.jpg","chapter_simple":"crypto\/assets\/crypto-book\/chapters-simple\/blockchain-101.jpg","rating":100,"sections":[{"chapter_id":1,"order":1,"slug":"what-is-blockchain","title":"What is the Blockchain?","status":"published","modified_content":null},{"chapter_id":1,"order":2,"slug":"decentralized-blockchain","title":"Anonymous & Decentralized Blockchains: The Cornerstone of Crypto","status":"published","modified_content":null},{"chapter_id":1,"order":3,"slug":"blockchain-transaction","title":"What is a Blockchain Transaction in Crypto?","status":"published","modified_content":null},{"chapter_id":1,"order":4,"slug":"crypto-fees","title":"The Different Types of Crypto Fees Explained","status":"published","modified_content":null},{"chapter_id":1,"order":5,"slug":"what-is-bridging-in-crypto","title":"The Key Notion Behind the Concept of Bridging in Crypto","status":"published","modified_content":null},{"chapter_id":1,"order":6,"slug":"types-of-blockchains","title":"Different Types of Blockchains: What to Look Out For?","status":"published","modified_content":null}]},{"id":2,"title":"Cryptocurrencies","slug":"cryptocurrencies","updated":null,"chapter":"crypto\/assets\/crypto-book\/chapters\/learn-cryptocurrencies.jpg","chapter_simple":"crypto\/assets\/crypto-book\/chapters-simple\/cryptocurrencies-101.jpg","rating":100,"sections":[{"chapter_id":2,"order":1,"slug":"what-is-a-cryptocurrency","title":"What is a Cryptocurrency?","status":"published","modified_content":null},{"chapter_id":2,"order":2,"slug":"how-does-cryptocurrency-work","title":"How Does Cryptocurrency Work?","status":"published","modified_content":null},{"chapter_id":2,"order":3,"slug":"is-cryptocurrency-a-good-investment","title":"Is Cryptocurrency a Good Investment? The Pros & Cons","status":"published","modified_content":null},{"chapter_id":2,"order":4,"slug":"coin-vs-token","title":"Coin VS Token: How Do They Differ?","status":"published","modified_content":null},{"chapter_id":2,"order":5,"slug":"what-are-stablecoins","title":"What are Stablecoins, Altcoins & Wrapped Coins?","status":"published","modified_content":null},{"chapter_id":2,"order":6,"slug":"what-is-a-bitcoin","title":"Bitcoin: the Pioneer of the Crypto World","status":"published","modified_content":null},{"chapter_id":2,"order":7,"slug":"what-is-ethereum","title":"The Ultimate Blockchain for dApp Creation: Ethereum","status":"published","modified_content":null},{"chapter_id":2,"order":8,"slug":"what-is-cardano-in-crypto","title":"What is Cardano and What is It Used For?","status":"published","modified_content":null},{"chapter_id":2,"order":9,"slug":"what-is-shiba-inu-coin","title":"Shiba Inu: the Dogecoin 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Crypto","status":"published","modified_content":null}]},{"id":3,"title":"Crypto Exchanges","slug":"crypto-exchanges","updated":null,"chapter":"crypto\/assets\/crypto-book\/chapters\/learn-crypto-exchanges.jpg","chapter_simple":"crypto\/assets\/crypto-book\/chapters-simple\/crypto-exchanges-101.jpg","rating":80,"sections":[{"chapter_id":3,"order":1,"slug":"how-do-cryptocurrency-exchanges-work","title":"How do Cryptocurrency Exchanges Work?","status":"published","modified_content":null},{"chapter_id":3,"order":2,"slug":"dex-vs-cex","title":"DEX VS CEX: Two Sides of the Crypto Exchange Industry","status":"published","modified_content":null},{"chapter_id":3,"order":3,"slug":"crypto-day-trading","title":"Crypto Day Trading: The Difference Between Buying, Trading, and Swapping","status":"published","modified_content":null},{"chapter_id":3,"order":4,"slug":"kyc-crypto","title":"KYC & AML: The Key to Complying With Legal Industry Standards","status":"published","modified_content":null},{"chapter_id":3,"order":5,"slug":"how-to-buy-crypto","title":"From Fiat to Crypto: How to Buy Crypto for the First Time","status":"published","modified_content":null},{"chapter_id":3,"order":6,"slug":"fiat-to-crypto","title":"Taking Profits: Turning Crypto Into Fiat","status":"published","modified_content":null},{"chapter_id":3,"order":7,"slug":"how-to-use-crypto","title":"You\u2019ve Got Crypto: What Can You Do With It?","status":"published","modified_content":null}]},{"id":4,"title":"Crypto Wallets","slug":"crypto-wallets","updated":false,"chapter":"crypto\/assets\/crypto-book\/chapters\/learn-crypto-wallets.jpg","chapter_simple":"crypto\/assets\/crypto-book\/chapters-simple\/crypto-wallets-101.jpg","rating":80,"sections":[{"chapter_id":4,"order":1,"slug":"what-is-a-crypto-wallet","title":"What is a Crypto Wallet?","status":"published","modified_content":null},{"chapter_id":4,"order":2,"slug":"hot-wallet-vs-cold-wallet","title":"Hot Wallet VS Cold Wallet: Which One to Pick?","status":"published","modified_content":null},{"chapter_id":4,"order":3,"slug":"non-custodial-wallet","title":"What are Non-Custodial Crypto Wallets?","status":"published","modified_content":null},{"chapter_id":4,"order":4,"slug":"what-is-metamask","title":"Metamask: The Leading Non-Custodial Wallet","status":"published","modified_content":null},{"chapter_id":4,"order":37,"slug":"how-safe-is-cryptocurrency","title":"The Key Crypto Wallet Safety Practices: How Safe Can Crypto Be?","status":"published","modified_content":null}]},{"id":5,"title":"NFTs","slug":"nfts","updated":null,"chapter":"crypto\/assets\/crypto-book\/chapters\/learn-nfts.jpg","chapter_simple":"crypto\/assets\/crypto-book\/chapters-simple\/nfts-101.jpg","rating":100,"sections":[{"chapter_id":5,"order":2,"slug":"how-to-trade-nfts","title":"NFT Trading: The Ins and Outs","status":"published","modified_content":null},{"chapter_id":5,"order":3,"slug":"buying-nft","title":"Tips and Tricks of Choosing the Right NFTs","status":"published","modified_content":null},{"chapter_id":5,"order":4,"slug":"how-to-store-nft","title":"How to Store NFTs: Best Practices","status":"published","modified_content":null},{"chapter_id":5,"order":5,"slug":"how-to-create-an-nft","title":"How to Create Your Own NFTs?","status":"published","modified_content":null},{"chapter_id":5,"order":6,"slug":"how-to-make-passive-money-with-nft","title":"Making Passive Money with NFTs","status":"published","modified_content":null}]},{"id":6,"title":"dApps & Defi","slug":"dapps-and-defi","updated":true,"chapter":"crypto\/assets\/crypto-book\/chapters\/learn-dapps.jpg","chapter_simple":"crypto\/assets\/crypto-book\/chapters-simple\/dapps-defi-101.jpg","rating":80,"sections":[{"chapter_id":6,"order":1,"slug":"what-are-nfts","title":"What are Non-Fungible Tokens (NFTs)?","status":"published","modified_content":null},{"chapter_id":6,"order":1,"slug":"what-is-defi","title":"What is Decentralized Finance (DeFi)?","status":"published","modified_content":null},{"chapter_id":6,"order":2,"slug":"what-is-defi-2-0","title":"DeFi 2.0: The New Version of Decentralized Finance","status":"published","modified_content":null},{"chapter_id":6,"order":3,"slug":"what-are-dapps-in-crypto","title":"What Are dApps and How Do They Work?","status":"published","modified_content":null},{"chapter_id":6,"order":4,"slug":"defi-dapps","title":"Picking the Right dApps: Dos and Don'ts","status":"published","modified_content":null},{"chapter_id":6,"order":5,"slug":"what-is-web-3-0","title":"Web 3.0: The Future of the Internet","status":"published","modified_content":null},{"chapter_id":6,"order":6,"slug":"what-are-smart-contracts","title":"What is the Core Purpose of Smart Contracts?","status":"published","modified_content":null},{"chapter_id":6,"order":7,"slug":"what-is-a-dao-in-crypto","title":"The Notion of a Decentralized Autonomous Ogranization (DAO)","status":"published","modified_content":null},{"chapter_id":6,"order":8,"slug":"what-is-staking-in-crypto","title":"What is the Goal of Staking Crypto Assets?","status":"published","modified_content":null},{"chapter_id":6,"order":9,"slug":"what-is-liquidity-pool-in-crypto","title":"What is a Liquidity Pool and How Does It Work?","status":"published","modified_content":null},{"chapter_id":6,"order":10,"slug":"what-is-automated-market-maker","title":"Automated Market Maker: the Cornerstone of the Decentralized Crypto Exchange Industry","status":"published","modified_content":null},{"chapter_id":6,"order":11,"slug":"what-is-yield-farming-in-crypto","title":"The Main Yield Farming Techniques","status":"published","modified_content":null},{"chapter_id":6,"order":12,"slug":"what-is-an-oracle-in-crypto","title":"Crypto Oracles: The Link Between Blockchain and Outside World Data","status":"published","modified_content":null},{"chapter_id":6,"order":13,"slug":"crypto-gambling","title":"The Peculiarities of Decentralized Crypto Gambling","status":"published","modified_content":null},{"chapter_id":6,"order":14,"slug":"what-is-the-metaverse","title":"Metaverse: A New Perception of Reality","status":"published","modified_content":null}]},{"id":7,"title":"Trading & Investing","slug":"trading-and-investing","updated":null,"chapter":"crypto\/assets\/crypto-book\/chapters\/learn-crypto-trading.jpg","chapter_simple":"crypto\/assets\/crypto-book\/chapters-simple\/crypto-trading-101.jpg","rating":80,"sections":[{"chapter_id":7,"order":1,"slug":"where-to-trade-crypto","title":"Where Can You Trade Cryptocurrencies?","status":"published","modified_content":null},{"chapter_id":7,"order":2,"slug":"how-to-invest-in-crypto","title":"Investing in Crypto: What Investing Options Do You Have?","status":"published","modified_content":null},{"chapter_id":7,"order":3,"slug":"ico-vs-ido","title":"ICO vs IDO vs IEO: Which One is the One?","status":"published","modified_content":null},{"chapter_id":7,"order":4,"slug":"what-is-an-airdrop","title":"What are Crypto Airdrops and How to Get Them?","status":"published","modified_content":null},{"chapter_id":7,"order":5,"slug":"how-to-get-free-crypto","title":"How to Get Free Crypto Assets?","status":"published","modified_content":null},{"chapter_id":7,"order":6,"slug":"how-to-arbitrage-crypto","title":"What is Crypto Arbitrage: The Main Principles","status":"published","modified_content":null},{"chapter_id":7,"order":7,"slug":"what-is-a-perpetual-contract","title":"Perpetual Contracts: Futures Contracts Without an Expiration Date","status":"published","modified_content":null},{"chapter_id":7,"order":8,"slug":"what-is-fud","title":"What is FUD: How to Use It to Your Advantage While Investing in Crypto?","status":"published","modified_content":null},{"chapter_id":7,"order":9,"slug":"investing-in-cryptocurrency","title":"Investing in Cryptocurrency: How to Manage Your Risks?","status":"published","modified_content":null},{"chapter_id":7,"order":10,"slug":"what-is-a-rug-pull-in-crypto","title":"What is a Rug Pull in Crypto?","status":"published","modified_content":null},{"chapter_id":7,"order":11,"slug":"how-to-avoid-rug-pulls-in-crypto","title":"How to Spot and Avoid Rug Pulls?","status":"published","modified_content":null},{"chapter_id":7,"order":12,"slug":"how-to-avoid-crypto-taxes","title":"The Key Legal Techniques of Avoiding Crypto Taxes","status":"published","modified_content":null}]},{"id":8,"title":"Crypto 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Tokens?","status":"published","modified_content":null},{"chapter_id":8,"order":5,"slug":"how-to-research-crypto","title":"Crypto Research Fundamentals & Social Signals: Your Daily Trading Strategy","status":"published","modified_content":null},{"chapter_id":8,"order":46,"slug":"portfolio-diversification-definition","title":"Portfolio Diversification: The Whats, the Whys, and the Hows","status":"published","modified_content":null}]},{"id":9,"title":"Mining","slug":"mining","updated":false,"chapter":"crypto\/assets\/crypto-book\/chapters\/learn-crypto-mining.jpg","chapter_simple":"crypto\/assets\/crypto-book\/chapters-simple\/crypto-mining-101.jpg","rating":80,"sections":[{"chapter_id":9,"order":1,"slug":"what-is-crypto-mining","title":"Crypto Mining: What It is and How Does It Work?","status":"published","modified_content":null},{"chapter_id":9,"order":2,"slug":"what-is-a-mining-pool","title":"Mining Pools: Is Collective Mining Better Than Solo Mining?","status":"published","modified_content":null},{"chapter_id":9,"order":3,"slug":"what-is-staking-crypto","title":"An Advanced Look into What is Staking Crypto","status":"published","modified_content":null},{"chapter_id":9,"order":4,"slug":"what-is-proof-of-stake-vs-proof-of-work","title":"Proof-of-Work VS Proof-of-Stake: The Differences That Matter","status":"published","modified_content":null},{"chapter_id":9,"order":5,"slug":"what-is-crypto-mining-rig","title":"Crypto Mining Rig: What It is and How to Build One?","status":"published","modified_content":null}]},{"id":10,"title":"Crypto Terms","updated":false,"chapter":"crypto\/assets\/crypto-book\/chapters\/crypto-101-glossary.jpg","chapter_simple":"crypto\/assets\/crypto-book\/chapters-simple\/crypto-glossary-101.jpg","rating":100,"sections":["A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"]}]"
current-chapter="O"
current-section="what-is-optimistic-oracle">
