{"id":239643,"date":"2026-03-02T09:31:35","date_gmt":"2026-03-02T14:31:35","guid":{"rendered":"https:\/\/ibkrcampus.com\/campus\/?post_type=glossary-terms&#038;p=239643"},"modified":"2026-03-02T09:31:37","modified_gmt":"2026-03-02T14:31:37","slug":"hash-function","status":"publish","type":"glossary-terms","link":"https:\/\/www.interactivebrokers.com\/campus\/glossary-terms\/hash-function\/","title":{"rendered":"Hash Function"},"content":{"rendered":"\n<p>A hash function is a cryptographic algorithm that converts any input (like a transaction or file) into a fixed-length string of numbers and letters, called a hash. Hashes are deterministic (the same input always produces the same output), but even tiny changes in the input produce completely different hashes. In crypto, hash functions secure blockchains by linking blocks together, ensuring data integrity.<br><br>For example, Bitcoin uses SHA-256 (Secure Hash Algorithm 256-bit); each block\u2019s hash confirms the transactions in that block and connects it to the previous block.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A hash function is a cryptographic algorithm that converts any input (like a transaction or file) into a fixed-length string of numbers and letters, called a hash. Hashes are deterministic (the same input always produces the same output), but even tiny changes in the input produce completely different hashes. In crypto, hash functions secure blockchains [&hellip;]<\/p>\n","protected":false},"featured_media":0,"parent":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"traders-glossary":[13272,13251],"class_list":{"0":"post-239643","1":"glossary-terms","2":"type-glossary-terms","3":"status-publish","5":"traders-glossary-trading-terms-h","6":"traders-glossary-trading-alphabet"},"pp_statuses_selecting_workflow":false,"pp_workflow_action":"current","pp_status_selection":"publish","acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.9 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Archives Term | IBKR Glossary | IBKR Campus<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.interactivebrokers.com\/campus\/wp-json\/wp\/v2\/glossary-terms\/239643\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hash Function | IBKR Campus US\" \/>\n<meta property=\"og:description\" content=\"A hash function is a cryptographic algorithm that converts any input (like a transaction or file) into a fixed-length string of numbers and letters, called a hash. 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