cryptocurrency opens at a specific time period. For instance, it opens at the start of the day and closes at the end of the day. Overall, these terms were more useful in traditional financial markets as there are fixed hours of the day in which trading occurs.</p>\n<p>Once implemented, <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-blockchain/">blockchain and its settings are difficult to change. This is because each modification must be consented to by all network <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-node/">nodes and members thus creating consensus, which isn't always simple. As a result, blockchain platforms and <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-are-decentralized-applications-dapps/">decentralized apps (dApps)</strong></strong></a> are often only modifiable via a&nbsp;<a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-hard-fork-blockchain/">hard fork</strong></a>, which requires establishing a new chain.</p>\n<p>Moreover, hard forks are considered to be risky for users as well as inconvenient. In other words, it&rsquo;s not useful for projects to hard fork every time they require to carry out adjustments and add functionalities.&nbsp;</p>\n<p>Therefore, blockchain programming depends mostly on the open/close concept, which indicates leaving room for increasing abilities without taking drastic measures.</p>\n<p>When it comes to software development, open/close describes the programming approach of extending software portions, without permitting any changes to the source code.&nbsp;</p>\n<p>The code itself allows for flexibility while limiting the ability to modify its essential components. <strong>This avoids the need to totally rewrite the software whenever new standards emerge</strong>. Bertrand Meyer initially articulated it, and it is part of the SOLID concept of object-oriented programming. Because of the immutability of blockchain and crypto projects, open/close is very critical in their architecture.</p>","level":"easy","meta_title":"What is Open/Close? Definition & Meaning | Crypto Wiki","meta_description":"Open/Close meaning: Open/Close - is the price where a cryptocurrency opens at a specific time period.","meta_keywords":null,"language":"en","created_at":"2022-03-24T14:28:49.000000Z","updated_at":"2022-05-13T14:32:23.000000Z","preview_url":"https://www.bitdegree.org/crypto/learn/crypto-terms/what-is-open-close"},"readingTime":1,"chapterList":[{"id":1,"title":"Blockchain","slug":"blockchain","updated":null,"chapter":"https://assets.bitdegree.org/crypto/assets/crypto-book/chapters/learn-blockchain.jpg","chapter_simple":"https://assets.bitdegree.org/crypto/assets/crypto-book/chapters-simple/blockchain-101.jpg","rating":100,"sections":[{"slug":"what-is-blockchain","title":"What is the Blockchain?","featured_image_id":6412,"status":"published","chapter_id":1,"language":"en","order":1,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-blockchain","featured_image":{"id":6412,"uuid":"152ba579-ce8d-488a-9e06-bcd99e976b7d","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-is-blockchain-626fbe085a0cd.o.jpg","path":"crypto/storage/media/what-is-blockchain-626fbe085a0cd.o.jpg","original_path":"crypto/storage/media/what-is-blockchain-626fbe085a0cd.jpg","name":"what-is-blockchain-626fbe085a0cd.o.jpg","original_name":"what-is-blockchain.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"93.86KB"},"youtube_video":null},{"slug":"decentralized-blockchain","title":"Anonymous & Decentralized Blockchains: The Cornerstone of Crypto","featured_image_id":7205,"status":"published","chapter_id":1,"language":"en","order":2,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/decentralized-blockchain","featured_image":{"id":7205,"uuid":"c5d6f6a7-4914-4d6b-9fdd-e94dfb0bae82","public_url":"https://assets.bitdegree.org/crypto/storage/media/decentralized-blockchain-featured-image.o.jpg","path":"crypto/storage/media/decentralized-blockchain-featured-image.o.jpg","original_path":"crypto/storage/media/decentralized-blockchain-featured-image.jpg","name":"decentralized-blockchain-featured-image.o.jpg","original_name":"decentralized-blockchain-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"136.00KB"},"youtube_video":null},{"slug":"blockchain-transaction","title":"What is a Blockchain Transaction in Crypto?","featured_image_id":7397,"status":"published","chapter_id":1,"language":"en","order":3,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/blockchain-transaction","featured_image":{"id":7397,"uuid":"e60dff45-4c5d-4b44-a2c1-a27e49f700e7","public_url":"https://assets.bitdegree.org/crypto/storage/media/blockchain-transaction-featured-mage.o.jpg","path":"crypto/storage/media/blockchain-transaction-featured-mage.o.jpg","original_path":"crypto/storage/media/blockchain-transaction-featured-mage.jpg","name":"blockchain-transaction-featured-mage.o.jpg","original_name":"blockchain-transaction-featured-mage.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"85.83KB"},"youtube_video":null},{"slug":"crypto-fees","title":"The Different Types of Crypto Fees Explained","featured_image_id":7442,"status":"published","chapter_id":1,"language":"en","order":4,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/crypto-fees","featured_image":{"id":7442,"uuid":"f554012e-7fe1-4636-9718-81abd3499361","public_url":"https://assets.bitdegree.org/crypto/storage/media/crypto-fees-featured-image.o.jpg","path":"crypto/storage/media/crypto-fees-featured-image.o.jpg","original_path":"crypto/storage/media/crypto-fees-featured-image.jpg","name":"crypto-fees-featured-image.o.jpg","original_name":"crypto-fees-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"78.90KB"},"youtube_video":null},{"slug":"what-is-bridging-in-crypto","title":"The Key Notion Behind the Concept of Bridging in Crypto","featured_image_id":7662,"status":"published","chapter_id":1,"language":"en","order":5,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-bridging-in-crypto","featured_image":{"id":7662,"uuid":"67564127-d9df-451e-8767-c28930039dc8","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-is-crypto-bridging-featured-image.o.jpg","path":"crypto/storage/media/what-is-crypto-bridging-featured-image.o.jpg","original_path":"crypto/storage/media/what-is-crypto-bridging-featured-image.jpg","name":"what-is-crypto-bridging-featured-image.o.jpg","original_name":"what-is-crypto-bridging-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"106.21KB"},"youtube_video":null},{"slug":"types-of-blockchains","title":"Different Types of Blockchains: What to Look Out For?","featured_image_id":7272,"status":"published","chapter_id":1,"language":"en","order":6,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/types-of-blockchains","featured_image":{"id":7272,"uuid":"6ad01272-67ac-4719-8e88-7f01752a0628","public_url":"https://assets.bitdegree.org/crypto/storage/media/types-of-blockchains-featured-image.o.jpg","path":"crypto/storage/media/types-of-blockchains-featured-image.o.jpg","original_path":"crypto/storage/media/types-of-blockchains-featured-image.jpg","name":"types-of-blockchains-featured-image.o.jpg","original_name":"types-of-blockchains-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"110.34KB"},"youtube_video":null}]},{"id":2,"title":"Cryptocurrencies","slug":"cryptocurrencies","updated":null,"chapter":"https://assets.bitdegree.org/crypto/assets/crypto-book/chapters/learn-cryptocurrencies.jpg","chapter_simple":"https://assets.bitdegree.org/crypto/assets/crypto-book/chapters-simple/cryptocurrencies-101.jpg","rating":100,"sections":[{"slug":"what-is-a-cryptocurrency","title":"What is a Cryptocurrency?","featured_image_id":7751,"status":"published","chapter_id":2,"language":"en","order":1,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-a-cryptocurrency","featured_image":{"id":7751,"uuid":"791c4203-70ae-4c68-8a02-bc1769331e86","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-is-cryptocurrency-featured-image.o.jpg","path":"crypto/storage/media/what-is-cryptocurrency-featured-image.o.jpg","original_path":"crypto/storage/media/what-is-cryptocurrency-featured-image.jpg","name":"what-is-cryptocurrency-featured-image.o.jpg","original_name":"what-is-cryptocurrency-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"90.10KB"},"youtube_video":null},{"slug":"how-does-cryptocurrency-work","title":"How Does Cryptocurrency Work?","featured_image_id":7901,"status":"published","chapter_id":2,"language":"en","order":2,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/how-does-cryptocurrency-work","featured_image":{"id":7901,"uuid":"8cbcfe71-8bbf-4b46-88b5-3c093730a696","public_url":"https://assets.bitdegree.org/crypto/storage/media/how-does-cryptocurrency-work-featured-image.o.jpg","path":"crypto/storage/media/how-does-cryptocurrency-work-featured-image.o.jpg","original_path":"crypto/storage/media/how-does-cryptocurrency-work-featured-image.jpg","name":"how-does-cryptocurrency-work-featured-image.o.jpg","original_name":"how-does-cryptocurrency-work-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"131.98KB"},"youtube_video":null},{"slug":"is-cryptocurrency-a-good-investment","title":"Is Cryptocurrency a Good Investment? The Pros & Cons","featured_image_id":7970,"status":"published","chapter_id":2,"language":"en","order":3,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/is-cryptocurrency-a-good-investment","featured_image":{"id":7970,"uuid":"97ba4b02-cac2-4a9a-97d9-517f29a0ba30","public_url":"https://assets.bitdegree.org/crypto/storage/media/is-cryptocurrency-a-good-investment-featured-image.o.jpg","path":"crypto/storage/media/is-cryptocurrency-a-good-investment-featured-image.o.jpg","original_path":"crypto/storage/media/is-cryptocurrency-a-good-investment-featured-image.jpg","name":"is-cryptocurrency-a-good-investment-featured-image.o.jpg","original_name":"is-cryptocurrency-a-good-investment-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"98.62KB"},"youtube_video":null},{"slug":"coin-vs-token","title":"Coin VS Token: How Do They Differ?","featured_image_id":6414,"status":"published","chapter_id":2,"language":"en","order":4,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/coin-vs-token","featured_image":{"id":6414,"uuid":"c272a929-e278-42e8-9f7c-5425cfa42224","public_url":"https://assets.bitdegree.org/crypto/storage/media/coin-vs-token.o.jpg","path":"crypto/storage/media/coin-vs-token.o.jpg","original_path":"crypto/storage/media/coin-vs-token.jpg","name":"coin-vs-token.o.jpg","original_name":"coin-vs-token.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"97.03KB"},"youtube_video":null},{"slug":"what-are-stablecoins","title":"What are Stablecoins, Altcoins & Wrapped Coins?","featured_image_id":8008,"status":"published","chapter_id":2,"language":"en","order":5,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-are-stablecoins","featured_image":{"id":8008,"uuid":"e4bf3c31-531e-4f10-87be-0fa1b4c428c4","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-are-stablecoins-featured-image.o.jpg","path":"crypto/storage/media/what-are-stablecoins-featured-image.o.jpg","original_path":"crypto/storage/media/what-are-stablecoins-featured-image.jpg","name":"what-are-stablecoins-featured-image.o.jpg","original_name":"what-are-stablecoins-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"118.95KB"},"youtube_video":null},{"slug":"what-is-a-bitcoin","title":"Bitcoin: the Pioneer of the Crypto World","featured_image_id":8074,"status":"published","chapter_id":2,"language":"en","order":6,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-a-bitcoin","featured_image":{"id":8074,"uuid":"46e1226b-b72e-4c63-86f3-00b36865dc24","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-is-a-bitcoin-featured-image.o.jpg","path":"crypto/storage/media/what-is-a-bitcoin-featured-image.o.jpg","original_path":"crypto/storage/media/what-is-a-bitcoin-featured-image.jpg","name":"what-is-a-bitcoin-featured-image.o.jpg","original_name":"what-is-a-bitcoin-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"117.78KB"},"youtube_video":null},{"slug":"what-is-ethereum","title":"The Ultimate Blockchain for dApp Creation: Ethereum","featured_image_id":8199,"status":"published","chapter_id":2,"language":"en","order":7,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-ethereum","featured_image":{"id":8199,"uuid":"eea421af-8373-441f-98a1-a6ff7e5bf580","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-is-ethereum-featured-image.o.jpg","path":"crypto/storage/media/what-is-ethereum-featured-image.o.jpg","original_path":"crypto/storage/media/what-is-ethereum-featured-image.jpg","name":"what-is-ethereum-featured-image.o.jpg","original_name":"what-is-ethereum-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"65.20KB"},"youtube_video":null},{"slug":"what-is-cardano-in-crypto","title":"What is Cardano and What is It Used For?","featured_image_id":6525,"status":"published","chapter_id":2,"language":"en","order":8,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-cardano-in-crypto","featured_image":{"id":6525,"uuid":"b567449c-5b31-45c3-a8eb-4640d3b8ff69","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-is-cardano.o.jpg","path":"crypto/storage/media/what-is-cardano.o.jpg","original_path":"crypto/storage/media/what-is-cardano.jpg","name":"what-is-cardano.o.jpg","original_name":"what-is-cardano.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"91.90KB"},"youtube_video":null},{"slug":"what-is-shiba-inu-coin","title":"Shiba Inu: the Dogecoin Killer","featured_image_id":6541,"status":"published","chapter_id":2,"language":"en","order":9,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-shiba-inu-coin","featured_image":{"id":6541,"uuid":"c1bbdb54-6c30-4641-afd4-370b9e795091","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-is-shiba-inu-coin.o.jpg","path":"crypto/storage/media/what-is-shiba-inu-coin.o.jpg","original_path":"crypto/storage/media/what-is-shiba-inu-coin.jpg","name":"what-is-shiba-inu-coin.o.jpg","original_name":"what-is-shiba-inu-coin.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"91.35KB"},"youtube_video":null},{"slug":"what-is-solana-in-crypto","title":"Is Solana an Improved Version of Ethereum?","featured_image_id":6497,"status":"published","chapter_id":2,"language":"en","order":10,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-solana-in-crypto","featured_image":{"id":6497,"uuid":"6c7c70ad-e117-4520-b0ce-8ef6b3c184de","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-is-solana-in-crypto-6270ec2042765.o.jpg","path":"crypto/storage/media/what-is-solana-in-crypto-6270ec2042765.o.jpg","original_path":"crypto/storage/media/what-is-solana-in-crypto-6270ec2042765.jpg","name":"what-is-solana-in-crypto-6270ec2042765.o.jpg","original_name":"what-is-solana-in-crypto.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"96.08KB"},"youtube_video":null},{"slug":"what-is-polkadot-in-crypto","title":"The Bridge Between Blockchains: Polkadot","featured_image_id":6891,"status":"published","chapter_id":2,"language":"en","order":11,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-polkadot-in-crypto","featured_image":{"id":6891,"uuid":"8419c664-891c-434f-8de9-c483cd825616","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-is-polkadot-in-crypto-featured-image.o.jpg","path":"crypto/storage/media/what-is-polkadot-in-crypto-featured-image.o.jpg","original_path":"crypto/storage/media/what-is-polkadot-in-crypto-featured-image.jpg","name":"what-is-polkadot-in-crypto-featured-image.o.jpg","original_name":"what-is-polkadot-in-crypto-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"87.09KB"},"youtube_video":null},{"slug":"what-is-polygon-in-crypto","title":"Polygon: the Essential Scaling Solution for Ethereum","featured_image_id":7085,"status":"published","chapter_id":2,"language":"en","order":12,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-polygon-in-crypto","featured_image":{"id":7085,"uuid":"3cdbe13d-9f88-4cc9-98a0-0b8515210f94","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-is-polygon-in-crypto-featured-image.o.jpg","path":"crypto/storage/media/what-is-polygon-in-crypto-featured-image.o.jpg","original_path":"crypto/storage/media/what-is-polygon-in-crypto-featured-image.jpg","name":"what-is-polygon-in-crypto-featured-image.o.jpg","original_name":"what-is-polygon-in-crypto-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"77.90KB"},"youtube_video":null},{"slug":"practical-use-of-cryptocurrencies","title":"The Practical Use of Crypto","featured_image_id":6631,"status":"published","chapter_id":2,"language":"en","order":13,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/practical-use-of-cryptocurrencies","featured_image":{"id":6631,"uuid":"574ad2ea-9601-4c1c-9cf6-1d8221134076","public_url":"https://assets.bitdegree.org/crypto/storage/media/crypto-practical-use.o.jpg","path":"crypto/storage/media/crypto-practical-use.o.jpg","original_path":"crypto/storage/media/crypto-practical-use.jpg","name":"crypto-practical-use.o.jpg","original_name":"crypto-practical-use.jpg","title":null,"alt":null,"width":1280,"height":720,"disk":"spaces","status":"uploaded","readable_file_size":"96.43KB"},"youtube_video":null}]},{"id":3,"title":"Crypto Exchanges","slug":"crypto-exchanges","updated":null,"chapter":"https://assets.bitdegree.org/crypto/assets/crypto-book/chapters/learn-crypto-exchanges.jpg","chapter_simple":"https://assets.bitdegree.org/crypto/assets/crypto-book/chapters-simple/crypto-exchanges-101.jpg","rating":80,"sections":[{"slug":"how-do-cryptocurrency-exchanges-work","title":"How do Cryptocurrency Exchanges Work?","featured_image_id":8223,"status":"published","chapter_id":3,"language":"en","order":1,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/how-do-cryptocurrency-exchanges-work","featured_image":{"id":8223,"uuid":"fcb588c1-df45-4330-95de-a3aec84c8cdb","public_url":"https://assets.bitdegree.org/crypto/storage/media/how-do-cryptocurrency-exchanges-work-featured-image.o.jpg","path":"crypto/storage/media/how-do-cryptocurrency-exchanges-work-featured-image.o.jpg","original_path":"crypto/storage/media/how-do-cryptocurrency-exchanges-work-featured-image.jpg","name":"how-do-cryptocurrency-exchanges-work-featured-image.o.jpg","original_name":"how-do-cryptocurrency-exchanges-work-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"110.40KB"},"youtube_video":null},{"slug":"dex-vs-cex","title":"DEX VS CEX: Two Sides of the Crypto Exchange Industry","featured_image_id":8448,"status":"published","chapter_id":3,"language":"en","order":2,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/dex-vs-cex","featured_image":{"id":8448,"uuid":"7fb54661-e36d-4dd5-bb54-f3e80a869640","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/cex-vs-dex-featured-image.jpg","path":"crypto/storage/optimized/cex-vs-dex-featured-image.jpg","original_path":"crypto/storage/original/cex-vs-dex-featured-image.jpg","name":"cex-vs-dex-featured-image.jpg","original_name":"cex-vs-dex-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"33.99KB"},"youtube_video":null},{"slug":"crypto-day-trading","title":"Crypto Day Trading: The Difference Between Buying, Trading, and Swapping","featured_image_id":8449,"status":"published","chapter_id":3,"language":"en","order":3,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/crypto-day-trading","featured_image":{"id":8449,"uuid":"025c58f1-f0ec-46b9-a58c-3fdec43a4f4c","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/crypto-day-trading-featurd-image.jpg","path":"crypto/storage/optimized/crypto-day-trading-featurd-image.jpg","original_path":"crypto/storage/original/crypto-day-trading-featurd-image.jpg","name":"crypto-day-trading-featurd-image.jpg","original_name":"crypto-day-trading-featurd-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"36.23KB"},"youtube_video":null},{"slug":"kyc-crypto","title":"KYC & AML: The Key to Complying With Legal Industry Standards","featured_image_id":null,"status":"published","chapter_id":3,"language":"en","order":4,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/kyc-crypto","featured_image":null,"youtube_video":null},{"slug":"how-to-buy-crypto","title":"From Fiat to Crypto: How to Buy Crypto for the First Time","featured_image_id":8748,"status":"published","chapter_id":3,"language":"en","order":5,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/how-to-buy-crypto","featured_image":{"id":8748,"uuid":"fe81c05d-c3da-4d7d-a132-bdb04f1fae9b","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/how-to-buy-crypto-featured-image.jpg","path":"crypto/storage/optimized/how-to-buy-crypto-featured-image.jpg","original_path":"crypto/storage/original/how-to-buy-crypto-featured-image.jpg","name":"how-to-buy-crypto-featured-image.jpg","original_name":"how-to-buy-crypto-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"46.15KB"},"youtube_video":null},{"slug":"fiat-to-crypto","title":"Taking Profits: Turning Crypto Into Fiat","featured_image_id":8840,"status":"published","chapter_id":3,"language":"en","order":6,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/fiat-to-crypto","featured_image":{"id":8840,"uuid":"6d0b98da-7eb5-4b1e-bfb1-d95f0938f85c","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/fiat-to-crypto-featured-image.jpg","path":"crypto/storage/optimized/fiat-to-crypto-featured-image.jpg","original_path":"crypto/storage/original/fiat-to-crypto-featured-image.jpg","name":"fiat-to-crypto-featured-image.jpg","original_name":"fiat-to-crypto-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"44.02KB"},"youtube_video":null},{"slug":"how-to-use-crypto","title":"You’ve Got Crypto: What Can You Do With It?","featured_image_id":8932,"status":"published","chapter_id":3,"language":"en","order":7,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/how-to-use-crypto","featured_image":{"id":8932,"uuid":"2248685e-3fbf-41a8-80f5-39ea5ce54c4c","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/how-to-use-crypto-featured-image.jpg","path":"crypto/storage/optimized/how-to-use-crypto-featured-image.jpg","original_path":"crypto/storage/original/how-to-use-crypto-featured-image.jpg","name":"how-to-use-crypto-featured-image.jpg","original_name":"how-to-use-crypto-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"34.96KB"},"youtube_video":null}]},{"id":4,"title":"Crypto Wallets","slug":"crypto-wallets","updated":false,"chapter":"https://assets.bitdegree.org/crypto/assets/crypto-book/chapters/learn-crypto-wallets.jpg","chapter_simple":"https://assets.bitdegree.org/crypto/assets/crypto-book/chapters-simple/crypto-wallets-101.jpg","rating":80,"sections":[{"slug":"what-is-a-crypto-wallet","title":"What is a Crypto Wallet?","featured_image_id":10090,"status":"published","chapter_id":4,"language":"en","order":1,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-a-crypto-wallet","featured_image":{"id":10090,"uuid":"8b3d3575-1a58-449e-8583-34a4b43d1d39","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/what-is-a-crypto-wallet-featured-image.jpg","path":"crypto/storage/optimized/what-is-a-crypto-wallet-featured-image.jpg","original_path":"crypto/storage/original/what-is-a-crypto-wallet-featured-image.jpg","name":"what-is-a-crypto-wallet-featured-image.jpg","original_name":"what-is-a-crypto-wallet-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"58.62KB"},"youtube_video":null},{"slug":"hot-wallet-vs-cold-wallet","title":"Hot Wallet VS Cold Wallet: Which One to Pick?","featured_image_id":9000,"status":"published","chapter_id":4,"language":"en","order":2,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/hot-wallet-vs-cold-wallet","featured_image":{"id":9000,"uuid":"bf04c205-f96c-41bf-86f7-a2672133734e","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/hot-wallet-vs-cold-wallet-featured-image.jpg","path":"crypto/storage/optimized/hot-wallet-vs-cold-wallet-featured-image.jpg","original_path":"crypto/storage/original/hot-wallet-vs-cold-wallet-featured-image.jpg","name":"hot-wallet-vs-cold-wallet-featured-image.jpg","original_name":"hot-wallet-vs-cold-wallet-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"57.52KB"},"youtube_video":null},{"slug":"non-custodial-wallet","title":"What are Non-Custodial Crypto Wallets?","featured_image_id":7608,"status":"published","chapter_id":4,"language":"en","order":3,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/non-custodial-wallet","featured_image":{"id":7608,"uuid":"cdbc87df-190b-4a52-92ed-674c981bfbb1","public_url":"https://assets.bitdegree.org/crypto/storage/media/non-custodial-wallet-featured-image.o.jpg","path":"crypto/storage/media/non-custodial-wallet-featured-image.o.jpg","original_path":"crypto/storage/media/non-custodial-wallet-featured-image.jpg","name":"non-custodial-wallet-featured-image.o.jpg","original_name":"non-custodial-wallet-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"119.46KB"},"youtube_video":null},{"slug":"what-is-metamask","title":"Metamask: The Leading Non-Custodial Wallet","featured_image_id":6436,"status":"published","chapter_id":4,"language":"en","order":4,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-metamask","featured_image":{"id":6436,"uuid":"07afcb69-dec3-477f-8b1c-a78a2f7c8892","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-is-metamask-626fdf70526cf.o.jpg","path":"crypto/storage/media/what-is-metamask-626fdf70526cf.o.jpg","original_path":"crypto/storage/media/what-is-metamask-626fdf70526cf.jpg","name":"what-is-metamask-626fdf70526cf.o.jpg","original_name":"what-is-metamask.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"87.47KB"},"youtube_video":null},{"slug":"how-safe-is-cryptocurrency","title":"The Key Crypto Wallet Safety Practices: How Safe Can Crypto Be?","featured_image_id":9338,"status":"published","chapter_id":4,"language":"en","order":37,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/how-safe-is-cryptocurrency","featured_image":{"id":9338,"uuid":"f5b1da8e-dee9-43ea-b6d7-f2f057a71090","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/how-safe-is-cryptocurrency-featured-image.jpg","path":"crypto/storage/optimized/how-safe-is-cryptocurrency-featured-image.jpg","original_path":"crypto/storage/original/how-safe-is-cryptocurrency-featured-image.jpg","name":"how-safe-is-cryptocurrency-featured-image.jpg","original_name":"how-safe-is-cryptocurrency-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"64.98KB"},"youtube_video":null}]},{"id":5,"title":"NFTs","slug":"nfts","updated":null,"chapter":"https://assets.bitdegree.org/crypto/assets/crypto-book/chapters/learn-nfts.jpg","chapter_simple":"https://assets.bitdegree.org/crypto/assets/crypto-book/chapters-simple/nfts-101.jpg","rating":100,"sections":[{"slug":"what-are-nfts","title":"What are Non-Fungible Tokens (NFTs)?","featured_image_id":6396,"status":"published","chapter_id":5,"language":"en","order":1,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-are-nfts","featured_image":{"id":6396,"uuid":"8b724ac3-532b-441e-bf9c-58a6af704a7f","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-are-nfts.o.jpg","path":"crypto/storage/media/what-are-nfts.o.jpg","original_path":"crypto/storage/media/what-are-nfts.jpg","name":"what-are-nfts.o.jpg","original_name":"what-are-nfts.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"101.34KB"},"youtube_video":null},{"slug":"how-to-trade-nfts","title":"NFT Trading: The Ins and Outs","featured_image_id":9454,"status":"published","chapter_id":5,"language":"en","order":2,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/how-to-trade-nfts","featured_image":{"id":9454,"uuid":"d5997c2e-a079-4b01-8bf5-4d05a21b091e","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/how-to-trade-nfts-featured-image.jpg","path":"crypto/storage/optimized/how-to-trade-nfts-featured-image.jpg","original_path":"crypto/storage/original/how-to-trade-nfts-featured-image.jpg","name":"how-to-trade-nfts-featured-image.jpg","original_name":"how-to-trade-nfts-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"39.43KB"},"youtube_video":null},{"slug":"buying-nft","title":"Tips and Tricks of Choosing the Right NFTs","featured_image_id":9674,"status":"published","chapter_id":5,"language":"en","order":3,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/buying-nft","featured_image":{"id":9674,"uuid":"ae025989-e689-4ece-b472-3434080810fb","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/buying-nft-featured-image.jpg","path":"crypto/storage/optimized/buying-nft-featured-image.jpg","original_path":"crypto/storage/original/buying-nft-featured-image.jpg","name":"buying-nft-featured-image.jpg","original_name":"buying-nft-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"48.93KB"},"youtube_video":null},{"slug":"how-to-store-nft","title":"How to Store NFTs: Best Practices","featured_image_id":9873,"status":"published","chapter_id":5,"language":"en","order":4,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/how-to-store-nft","featured_image":{"id":9873,"uuid":"23f1f793-d48c-4007-9d1b-9dea00fef356","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/how-to-store-nft-featured-image.jpg","path":"crypto/storage/optimized/how-to-store-nft-featured-image.jpg","original_path":"crypto/storage/original/how-to-store-nft-featured-image.jpg","name":"how-to-store-nft-featured-image.jpg","original_name":"how-to-store-nft-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"44.13KB"},"youtube_video":null},{"slug":"how-to-create-an-nft","title":"How to Create Your Own NFTs?","featured_image_id":10971,"status":"published","chapter_id":5,"language":"en","order":5,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/how-to-create-an-nft","featured_image":{"id":10971,"uuid":"264558fd-a505-4b94-9844-a73588ead5f2","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/how-to-create-an-nft-featured-image.jpg","path":"crypto/storage/optimized/how-to-create-an-nft-featured-image.jpg","original_path":"crypto/storage/original/how-to-create-an-nft-featured-image.jpg","name":"how-to-create-an-nft-featured-image.jpg","original_name":"how-to-create-an-nft-featured-image.jpg","title":null,"alt":null,"width":1024,"height":576,"disk":"spaces","status":"uploaded","readable_file_size":"50.40KB"},"youtube_video":null},{"slug":"how-to-make-passive-money-with-nft","title":"Making Passive Money with NFTs","featured_image_id":6524,"status":"published","chapter_id":5,"language":"en","order":6,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/how-to-make-passive-money-with-nft","featured_image":{"id":6524,"uuid":"b32da80c-c3a6-4042-8a35-032e843e93c2","public_url":"https://assets.bitdegree.org/crypto/storage/media/how-to-make-passive-money-with-nfts.o.jpg","path":"crypto/storage/media/how-to-make-passive-money-with-nfts.o.jpg","original_path":"crypto/storage/media/how-to-make-passive-money-with-nfts.jpg","name":"how-to-make-passive-money-with-nfts.o.jpg","original_name":"how-to-make-passive-money-with-nfts.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"109.46KB"},"youtube_video":null}]},{"id":6,"title":"dApps & Defi","slug":"dapps-and-defi","updated":true,"chapter":"https://assets.bitdegree.org/crypto/assets/crypto-book/chapters/learn-dapps.jpg","chapter_simple":"https://assets.bitdegree.org/crypto/assets/crypto-book/chapters-simple/dapps-defi-101.jpg","rating":80,"sections":[{"slug":"what-is-defi","title":"What is Decentralized Finance (DeFi)?","featured_image_id":6482,"status":"published","chapter_id":6,"language":"en","order":1,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-defi","featured_image":{"id":6482,"uuid":"fe6a90e2-dd9b-4fde-a73d-4bd54f28333a","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-is-defi-6270d5ef7b36a.o.jpg","path":"crypto/storage/media/what-is-defi-6270d5ef7b36a.o.jpg","original_path":"crypto/storage/media/what-is-defi-6270d5ef7b36a.jpg","name":"what-is-defi-6270d5ef7b36a.o.jpg","original_name":"what-is-defi.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"100.87KB"},"youtube_video":null},{"slug":"what-is-defi-2-0","title":"DeFi 2.0: The New Version of Decentralized Finance","featured_image_id":null,"status":"published","chapter_id":6,"language":"en","order":2,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-defi-2-0","featured_image":null,"youtube_video":null},{"slug":"what-are-dapps-in-crypto","title":"What Are dApps and How Do They Work?","featured_image_id":6512,"status":"published","chapter_id":6,"language":"en","order":3,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-are-dapps-in-crypto","featured_image":{"id":6512,"uuid":"5b01af79-3366-4b9a-bbc4-a1e6511c23c2","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-are-dapps-in-crypto.o.jpg","path":"crypto/storage/media/what-are-dapps-in-crypto.o.jpg","original_path":"crypto/storage/media/what-are-dapps-in-crypto.jpg","name":"what-are-dapps-in-crypto.o.jpg","original_name":"what-are-dapps-in-crypto.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"143.97KB"},"youtube_video":null},{"slug":"defi-dapps","title":"Picking the Right dApps: Dos and Don'ts","featured_image_id":11150,"status":"published","chapter_id":6,"language":"en","order":4,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/defi-dapps","featured_image":{"id":11150,"uuid":"bead04d0-c7ab-484a-9a26-c279078cdafa","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/defi-dapps-featured-image.jpg","path":"crypto/storage/optimized/defi-dapps-featured-image.jpg","original_path":"crypto/storage/original/defi-dapps-featured-image.jpg","name":"defi-dapps-featured-image.jpg","original_name":"defi-dapps-featured-image.jpg","title":null,"alt":null,"width":1024,"height":576,"disk":"spaces","status":"uploaded","readable_file_size":"64.91KB"},"youtube_video":null},{"slug":"what-is-web-3-0","title":"Web 3.0: The Future of the Internet","featured_image_id":6395,"status":"published","chapter_id":6,"language":"en","order":5,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-web-3-0","featured_image":{"id":6395,"uuid":"1ba8aae1-7977-415b-9e73-f68ad1219405","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-is-web3.o.jpg","path":"crypto/storage/media/what-is-web3.o.jpg","original_path":"crypto/storage/media/what-is-web3.jpg","name":"what-is-web3.o.jpg","original_name":"what-is-web3.jpg","title":null,"alt":null,"width":768,"height":476,"disk":"spaces","status":"uploaded","readable_file_size":"103.80KB"},"youtube_video":null},{"slug":"what-are-smart-contracts","title":"What is the Core Purpose of Smart Contracts?","featured_image_id":6413,"status":"published","chapter_id":6,"language":"en","order":6,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-are-smart-contracts","featured_image":{"id":6413,"uuid":"ec3a5a7b-d00e-4273-bfcf-60fa52a33851","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-are-smart-contracts.o.jpg","path":"crypto/storage/media/what-are-smart-contracts.o.jpg","original_path":"crypto/storage/media/what-are-smart-contracts.jpg","name":"what-are-smart-contracts.o.jpg","original_name":"what-are-smart-contracts.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"103.94KB"},"youtube_video":null},{"slug":"what-is-a-dao-in-crypto","title":"The Notion of a Decentralized Autonomous Ogranization (DAO)","featured_image_id":6502,"status":"published","chapter_id":6,"language":"en","order":7,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-a-dao-in-crypto","featured_image":{"id":6502,"uuid":"e58df8a9-b000-4267-91f3-bd0d697c8984","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-is-a-dao-in-crypto.o.jpg","path":"crypto/storage/media/what-is-a-dao-in-crypto.o.jpg","original_path":"crypto/storage/media/what-is-a-dao-in-crypto.jpg","name":"what-is-a-dao-in-crypto.o.jpg","original_name":"what-is-a-dao-in-crypto.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"79.33KB"},"youtube_video":null},{"slug":"what-is-staking-in-crypto","title":"What is the Goal of Staking Crypto Assets?","featured_image_id":6498,"status":"published","chapter_id":6,"language":"en","order":8,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-staking-in-crypto","featured_image":{"id":6498,"uuid":"b76303ce-48b0-4c97-812d-cb2589859f47","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-is-staking.o.jpg","path":"crypto/storage/media/what-is-staking.o.jpg","original_path":"crypto/storage/media/what-is-staking.jpg","name":"what-is-staking.o.jpg","original_name":"what-is-staking.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"258.60KB"},"youtube_video":null},{"slug":"what-is-liquidity-pool-in-crypto","title":"What is a Liquidity Pool and How Does It Work?","featured_image_id":6488,"status":"published","chapter_id":6,"language":"en","order":9,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-liquidity-pool-in-crypto","featured_image":{"id":6488,"uuid":"2fc1d0cc-8577-43c0-bc7d-f00a6291caea","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-is-liquidity-pool-6270dd6a4c693.o.jpg","path":"crypto/storage/media/what-is-liquidity-pool-6270dd6a4c693.o.jpg","original_path":"crypto/storage/media/what-is-liquidity-pool-6270dd6a4c693.jpg","name":"what-is-liquidity-pool-6270dd6a4c693.o.jpg","original_name":"what-is-liquidity-pool.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"108.86KB"},"youtube_video":null},{"slug":"what-is-automated-market-maker","title":"Automated Market Maker: the Cornerstone of the Decentralized Crypto Exchange Industry","featured_image_id":null,"status":"published","chapter_id":6,"language":"en","order":10,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-automated-market-maker","featured_image":null,"youtube_video":null},{"slug":"what-is-yield-farming-in-crypto","title":"The Main Yield Farming Techniques","featured_image_id":6528,"status":"published","chapter_id":6,"language":"en","order":11,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-yield-farming-in-crypto","featured_image":{"id":6528,"uuid":"bc531000-9b52-4db5-93fc-80d3317a660d","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-is-yield-farming-in-crypto.o.jpg","path":"crypto/storage/media/what-is-yield-farming-in-crypto.o.jpg","original_path":"crypto/storage/media/what-is-yield-farming-in-crypto.jpg","name":"what-is-yield-farming-in-crypto.o.jpg","original_name":"what-is-yield-farming-in-crypto.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"184.57KB"},"youtube_video":null},{"slug":"what-is-an-oracle-in-crypto","title":"Crypto Oracles: The Link Between Blockchain and Outside World Data","featured_image_id":10249,"status":"published","chapter_id":6,"language":"en","order":12,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-an-oracle-in-crypto","featured_image":{"id":10249,"uuid":"035b2dde-8494-4742-9b7e-4b442aff7955","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/what-is-an-oracle-in-crypto-featured-image.jpg","path":"crypto/storage/optimized/what-is-an-oracle-in-crypto-featured-image.jpg","original_path":"crypto/storage/original/what-is-an-oracle-in-crypto-featured-image.jpg","name":"what-is-an-oracle-in-crypto-featured-image.jpg","original_name":"what-is-an-oracle-in-crypto-featured-image.jpg","title":null,"alt":null,"width":1024,"height":576,"disk":"spaces","status":"uploaded","readable_file_size":"53.26KB"},"youtube_video":null},{"slug":"crypto-gambling","title":"The Peculiarities of Decentralized Crypto Gambling","featured_image_id":9901,"status":"published","chapter_id":6,"language":"en","order":13,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/crypto-gambling","featured_image":{"id":9901,"uuid":"60ea4f3a-9576-4004-aa96-619dc96e4319","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/crypto-gambling-featured-image.jpg","path":"crypto/storage/optimized/crypto-gambling-featured-image.jpg","original_path":"crypto/storage/original/crypto-gambling-featured-image.jpg","name":"crypto-gambling-featured-image.jpg","original_name":"crypto-gambling-featured-image.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"61.02KB"},"youtube_video":null},{"slug":"what-is-the-metaverse","title":"Metaverse: A New Perception of Reality","featured_image_id":6411,"status":"published","chapter_id":6,"language":"en","order":14,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-the-metaverse","featured_image":{"id":6411,"uuid":"fad79626-bbf1-4fc0-9e99-bde5597c1bc7","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-is-metaverse.o.jpg","path":"crypto/storage/media/what-is-metaverse.o.jpg","original_path":"crypto/storage/media/what-is-metaverse.jpg","name":"what-is-metaverse.o.jpg","original_name":"what-is-metaverse.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"88.15KB"},"youtube_video":null}]},{"id":7,"title":"Trading & Investing","slug":"trading-and-investing","updated":null,"chapter":"https://assets.bitdegree.org/crypto/assets/crypto-book/chapters/learn-crypto-trading.jpg","chapter_simple":"https://assets.bitdegree.org/crypto/assets/crypto-book/chapters-simple/crypto-trading-101.jpg","rating":80,"sections":[{"slug":"where-to-trade-crypto","title":"Where Can You Trade Cryptocurrencies?","featured_image_id":10342,"status":"published","chapter_id":7,"language":"en","order":1,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/where-to-trade-crypto","featured_image":{"id":10342,"uuid":"0bd8d78a-9423-48ee-9161-34dc1872b97c","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/where-to-trade-crypto-featured-image.jpg","path":"crypto/storage/optimized/where-to-trade-crypto-featured-image.jpg","original_path":"crypto/storage/original/where-to-trade-crypto-featured-image.jpg","name":"where-to-trade-crypto-featured-image.jpg","original_name":"where-to-trade-crypto-featured-image.jpg","title":null,"alt":null,"width":1024,"height":576,"disk":"spaces","status":"uploaded","readable_file_size":"85.96KB"},"youtube_video":null},{"slug":"how-to-invest-in-crypto","title":"Investing in Crypto: What Investing Options Do You Have?","featured_image_id":10729,"status":"published","chapter_id":7,"language":"en","order":2,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/how-to-invest-in-crypto","featured_image":{"id":10729,"uuid":"3439a1db-9892-404a-b4b6-a1db5a34bca4","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/how-to-invest-in-crypto-featured-image.jpg","path":"crypto/storage/optimized/how-to-invest-in-crypto-featured-image.jpg","original_path":"crypto/storage/original/how-to-invest-in-crypto-featured-image.jpg","name":"how-to-invest-in-crypto-featured-image.jpg","original_name":"how-to-invest-in-crypto-featured-image.jpg","title":null,"alt":null,"width":1024,"height":576,"disk":"spaces","status":"uploaded","readable_file_size":"75.22KB"},"youtube_video":null},{"slug":"ico-vs-ido","title":"ICO vs IDO vs IEO: Which One is the One?","featured_image_id":11310,"status":"published","chapter_id":7,"language":"en","order":3,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/ico-vs-ido","featured_image":{"id":11310,"uuid":"315e8a2b-93a1-4870-be48-a2a09d801663","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/ico-vs-ido-featured-image.jpg","path":"crypto/storage/optimized/ico-vs-ido-featured-image.jpg","original_path":"crypto/storage/original/ico-vs-ido-featured-image.jpg","name":"ico-vs-ido-featured-image.jpg","original_name":"ico-vs-ido-featured-image.jpg","title":null,"alt":null,"width":1024,"height":576,"disk":"spaces","status":"uploaded","readable_file_size":"64.39KB"},"youtube_video":null},{"slug":"what-is-an-airdrop","title":"What are Crypto Airdrops and How to Get Them?","featured_image_id":11359,"status":"published","chapter_id":7,"language":"en","order":4,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-an-airdrop","featured_image":{"id":11359,"uuid":"7b43c968-1275-4d3e-acb1-1707a43a4014","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/what-is-an-airdrop-featured-image.jpg","path":"crypto/storage/optimized/what-is-an-airdrop-featured-image.jpg","original_path":"crypto/storage/original/what-is-an-airdrop-featured-image.jpg","name":"what-is-an-airdrop-featured-image.jpg","original_name":"what-is-an-airdrop-featured-image.jpg","title":null,"alt":null,"width":1024,"height":576,"disk":"spaces","status":"uploaded","readable_file_size":"66.05KB"},"youtube_video":null},{"slug":"how-to-get-free-crypto","title":"How to Get Free Crypto Assets?","featured_image_id":6542,"status":"published","chapter_id":7,"language":"en","order":5,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/how-to-get-free-crypto","featured_image":{"id":6542,"uuid":"4fceb9ab-391e-4ef9-b00d-c871a49878a3","public_url":"https://assets.bitdegree.org/crypto/storage/media/how-to-get-free-crypto.o.jpg","path":"crypto/storage/media/how-to-get-free-crypto.o.jpg","original_path":"crypto/storage/media/how-to-get-free-crypto.jpg","name":"how-to-get-free-crypto.o.jpg","original_name":"how-to-get-free-crypto.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"93.93KB"},"youtube_video":null},{"slug":"how-to-arbitrage-crypto","title":"What is Crypto Arbitrage: The Main Principles","featured_image_id":null,"status":"published","chapter_id":7,"language":"en","order":6,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/how-to-arbitrage-crypto","featured_image":null,"youtube_video":null},{"slug":"what-is-fud","title":"What is FUD: How to Use It to Your Advantage While Investing in Crypto?","featured_image_id":11394,"status":"published","chapter_id":7,"language":"en","order":7,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-fud","featured_image":{"id":11394,"uuid":"defd32c5-d3e1-4e66-9f58-e2ee316bad3a","public_url":"https://assets.bitdegree.org/crypto/storage/optimized/what-is-fud-featured-image.jpg","path":"crypto/storage/optimized/what-is-fud-featured-image.jpg","original_path":"crypto/storage/original/what-is-fud-featured-image.jpg","name":"what-is-fud-featured-image.jpg","original_name":"what-is-fud-featured-image.jpg","title":null,"alt":null,"width":1024,"height":576,"disk":"spaces","status":"uploaded","readable_file_size":"65.30KB"},"youtube_video":null},{"slug":"investing-in-cryptocurrency","title":"Investing in Cryptocurrency: How to Manage Your Risks?","featured_image_id":null,"status":"published","chapter_id":7,"language":"en","order":8,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/investing-in-cryptocurrency","featured_image":null,"youtube_video":null},{"slug":"what-is-a-rug-pull-in-crypto","title":"What is a Rug Pull in Crypto?","featured_image_id":6532,"status":"published","chapter_id":7,"language":"en","order":9,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-a-rug-pull-in-crypto","featured_image":{"id":6532,"uuid":"be8043fb-078c-4487-9af9-d2d9c2b574ea","public_url":"https://assets.bitdegree.org/crypto/storage/media/what-is-a-rug-pull-in-crypto.o.jpg","path":"crypto/storage/media/what-is-a-rug-pull-in-crypto.o.jpg","original_path":"crypto/storage/media/what-is-a-rug-pull-in-crypto.jpg","name":"what-is-a-rug-pull-in-crypto.o.jpg","original_name":"what-is-a-rug-pull-in-crypto.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"92.28KB"},"youtube_video":null},{"slug":"how-to-avoid-rug-pulls-in-crypto","title":"How to Spot and Avoid Rug Pulls?","featured_image_id":6555,"status":"published","chapter_id":7,"language":"en","order":10,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/how-to-avoid-rug-pulls-in-crypto","featured_image":{"id":6555,"uuid":"80cbed9d-3b4b-45d9-9a85-d2d8108c0f32","public_url":"https://assets.bitdegree.org/crypto/storage/media/how-to-avoid-rug-pulls.o.jpg","path":"crypto/storage/media/how-to-avoid-rug-pulls.o.jpg","original_path":"crypto/storage/media/how-to-avoid-rug-pulls.jpg","name":"how-to-avoid-rug-pulls.o.jpg","original_name":"how-to-avoid-rug-pulls.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"111.99KB"},"youtube_video":null},{"slug":"how-to-avoid-crypto-taxes","title":"The Key Legal Techniques of Avoiding Crypto Taxes","featured_image_id":6526,"status":"published","chapter_id":7,"language":"en","order":11,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/how-to-avoid-crypto-taxes","featured_image":{"id":6526,"uuid":"1e44162c-ef1d-4010-81b4-9e8d1809aedf","public_url":"https://assets.bitdegree.org/crypto/storage/media/how-to-avoid-crypto-taxes.o.jpg","path":"crypto/storage/media/how-to-avoid-crypto-taxes.o.jpg","original_path":"crypto/storage/media/how-to-avoid-crypto-taxes.jpg","name":"how-to-avoid-crypto-taxes.o.jpg","original_name":"how-to-avoid-crypto-taxes.jpg","title":null,"alt":null,"width":768,"height":478,"disk":"spaces","status":"uploaded","readable_file_size":"99.10KB"},"youtube_video":null}]},{"id":8,"title":"Crypto Analysis","slug":"crypto-analysis","updated":null,"chapter":"https://assets.bitdegree.org/crypto/assets/crypto-book/chapters/learn-crypto-analysis.jpg","chapter_simple":"https://assets.bitdegree.org/crypto/assets/crypto-book/chapters-simple/crypto-analysis-101.jpg","rating":100,"sections":[{"slug":"what-is-bullish-and-bearish","title":"Bearish and Bullish Markets: Do They Matter?","featured_image_id":null,"status":"published","chapter_id":8,"language":"en","order":1,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-bullish-and-bearish","featured_image":null,"youtube_video":null},{"slug":"best-technical-analysis-indicators-for-crypto","title":"5 Best Crypto Technical Analysis Indicators You Must Know About","featured_image_id":null,"status":"published","chapter_id":8,"language":"en","order":2,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/best-technical-analysis-indicators-for-crypto","featured_image":null,"youtube_video":null},{"slug":"what-is-candlesticks","title":"Technical Analysis: What are Candlesticks, Trendlines, and Patterns?","featured_image_id":null,"status":"published","chapter_id":8,"language":"en","order":3,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/what-is-candlesticks","featured_image":null,"youtube_video":null},{"slug":"how-to-track-new-crypto-coins","title":"Crypto Tracking: How to Track Your Favorite Coins & Tokens?","featured_image_id":null,"status":"published","chapter_id":8,"language":"en","order":4,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/how-to-track-new-crypto-coins","featured_image":null,"youtube_video":null},{"slug":"how-to-research-crypto","title":"Crypto Research Fundamentals & Social Signals: Your Daily Trading Strategy","featured_image_id":null,"status":"published","chapter_id":8,"language":"en","order":5,"modified_content":null,"preview_url":"https://www.bitdegree.org/crypto/learn/how-to-research-crypto","featured_image":null,"youtube_video":null}]},{"id":9,"title":"Mining","slug":"mining","updated":false,"chapter":"https://assets.bitdegree.org/crypto/assets/crypto-book/chapters/learn-crypto-mining.jpg","chapter_simple":"https://assets.bitdegree.org/crypto/assets/crypto-book/chapters-simple/crypto-mining-101.jpg","rating":80,"sections":[]},{"id":10,"title":"Crypto Terms","updated":false,"chapter":"https://assets.bitdegree.org/crypto/assets/crypto-book/chapters/crypto-101-glossary.jpg","chapter_simple":"https://assets.bitdegree.org/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"]}],"nextSection":{"id":579,"original_id":null,"author_id":41,"translator_id":null,"title":"What does Overbought mean?","slug":"what-does-overbought-mean","section":"O","keyword":"Overbought","status":"published","definition":"a process when a cryptocurrency is perpetually purchased more and more while its price continuously increases.","content":"<p><strong>Overbought</strong> describes a process when the price of a cryptocurrency continually increases over time thanks to investments without a clearly defined investment rationale. A cryptocurrency asset is considered to be overbought when it trades above its fair value.</p>\n<p>Overbought conditions may vary in duration. If the market condition changes, the price of the asset may rapidly sink down. Technical analysis tools are used to observe the asset prices and determine whether it is overbought, as well as <strong>when and how likely the price is to make a U-turn</strong>.</p>\n<p>Economists use fundamental analysis to evaluate all public information regarding the market and macroeconomic factors. Such analysis can also help discover the grounds for the overbought condition. Furthermore, fundamental analysis may be used to predict when a cryptocurrency will leave the overbought condition and the estimated price decrease.</p>\n<p>Investors can use technical tools such as <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-trading-volume/">traded volume</strong></a> and momentum, as well as the recent price, to determine the overbought levels. Some of the factors taken into account to indicate an overbought condition are the <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-relative-strength-index-rsi/">relative strength index (RSI)</strong></a>, <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-stochastic-oscillator/">stochastic, and Williams %R.</p>\n<p>The <strong>relative strength index</strong> is used to determine the trading speed and price fluctuations. All values are recorded on a scale from 0 to 100. If a cryptocurrency is overbought, its RSI level is marked above 70. In February 2020, <a href=https://www.bitdegree.org/"https://www.bitdegree.org/crypto/buy-bitcoin-btc/">Bitcoin (BTC)</strong></strong></a> reached overbought levels according to RSI data when it reached the $10,000 mark.</p>\n<p>Stochastic is used to compare the current price of the asset with its highest and lowest price points within a certain period of time using a scale of 0 to 100. If an asset is rated <strong>above 80</strong>, it is considered overbought.</p>\n<p>Williams %R compares the current price with the lookback &ndash; the highest price over a certain period of time. An asset is considered overbought if it falls within the 20-0 range.</p>","level":"medium","meta_title":"What does Overbought mean? Definition & Meaning | Crypto Wiki","meta_description":"Overbought meaning: Overbought - a process when a cryptocurrency is perpetually purchased more and more while its price continuously increases.","meta_keywords":null,"language":"en","created_at":"2022-03-24T14:39:58.000000Z","updated_at":"2022-05-13T14:32:23.000000Z","preview_url":"https://www.bitdegree.org/crypto/learn/crypto-terms/what-does-overbought-mean"},"prevSection":{"id":576,"original_id":null,"author_id":41,"translator_id":null,"title":"What is Order Book?","slug":"what-is-order-book","section":"O","keyword":"Order Book","status":"published","definition":"a physical or digital documentation used to track the buy-sell activity of an asset.","content":"<p><strong>An</strong> <strong>order book</strong> is a physical or electronic document used to record the buy and sell history of an asset on a particular trading platform. While the concept of order books precedes digital technology, most platforms now use electronic order books that use an automatic matching engine to go through the list of buy and sell orders and fulfill them.</p>\n<p>Order books contain different information regarding the trading of the asset. This includes the <strong>list of buyers and sellers</strong>, and a section for bidding and asking. Asking refers to the sell requests, while bidding represents the <strong>buy orders</strong>.</p>\n<p>In the traditional structure, all bids are placed on the left side, while the asks are noted on the right. Bids are usually represented by using green, and asks are marked in red.</p>\n<p>The interactions between the buyers and sellers can be logged in the order book using a number of visualization tools, such as line charts or tables. <strong>Japanese candlestick charting</strong> can be used alongside an order book to observe market changes and make well-informed trading decisions.</p>\n<p>Order books typically record <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-limit-order/">limit orders</strong></a> &ndash; orders that use prices set by the trader. If an order uses the <strong>current market prices</strong> for the trade, it is considered to be a <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-market-order-market-buy-market-sell/">market order</strong></a>.</p>\n<p>The highest bid prices and the lowest ask prices are written on top of the order book. The difference between the highest bid and the lowest ask is known as the <a href=https://www.bitdegree.org/"/crypto/learn/crypto-terms/what-is-bid-ask-spread/">bid-ask spread</strong></strong></a>, which is used to indicate the strength of supply and demand.</p>","level":"easy","meta_title":"What is Order Book? Definition & Meaning | Crypto Wiki","meta_description":"Order Book meaning: Order Book - a physical or digital documentation used to track the buy-sell activity of an asset.","meta_keywords":null,"language":"en","created_at":"2022-03-24T14:21:31.000000Z","updated_at":"2022-09-14T12:31:32.000000Z","preview_url":"https://www.bitdegree.org/crypto/learn/crypto-terms/what-is-order-book"},"currentChapter":"O","currentSection":"what-is-open-close","chapterTitle":"O","readingLevel":"easy"},"url":"/crypto/learn/crypto-terms/what-is-open-close","version":"cdd198d50cbe5c9c21c9329d7c096ffc"}" class="container-fluid d-flex crypto-book p-0">
Handbook Cover Page
Crypto Terms: Letter O

What is Open/Close?

Open/Close MEANING:
Open/Close - is the price where a cryptocurrency opens at a specific time period.
Easy
1 minute

Let's find out Open/Close meaning, definition in crypto, what is Open/Close, and all other detailed facts.

Open/close is a term used to describe the price at which a cryptocurrency opens at a specific time period. For instance, it opens at the start of the day and closes at the end of the day. Overall, these terms were more useful in traditional financial markets as there are fixed hours of the day in which trading occurs.

Once implemented, blockchain and its settings are difficult to change. This is because each modification must be consented to by all network nodes and members thus creating consensus, which isn't always simple. As a result, blockchain platforms and decentralized apps (dApps) are often only modifiable via a hard fork, which requires establishing a new chain.

Moreover, hard forks are considered to be risky for users as well as inconvenient. In other words, it’s not useful for projects to hard fork every time they require to carry out adjustments and add functionalities. 

Therefore, blockchain programming depends mostly on the open/close concept, which indicates leaving room for increasing abilities without taking drastic measures.

When it comes to software development, open/close describes the programming approach of extending software portions, without permitting any changes to the source code. 

The code itself allows for flexibility while limiting the ability to modify its essential components. This avoids the need to totally rewrite the software whenever new standards emerge. Bertrand Meyer initially articulated it, and it is part of the SOLID concept of object-oriented programming. Because of the immutability of blockchain and crypto projects, open/close is very critical in their architecture.
Prev Section
All Crypto Terms
Next Section