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<li class="header">Packages</li>
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<li class="chapter active" data-level="1.1" data-path="./">
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<a href="./">
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Introduction
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<li class="chapter " data-level="1.2" data-path="keyring/">
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keyring
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<li class="chapter " data-level="1.3" data-path="trie-db/">
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trie-db
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<li class="chapter " data-level="1.4" data-path="trie-hash/">
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<a href="trie-hash/">
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trie-hash
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</a>
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<li class="chapter " data-level="1.5" data-path="util/">
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<a href="util/">
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util
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</a>
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</li>
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<li class="chapter " data-level="1.6" data-path="util-crypto/">
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<a href="util-crypto/">
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util-crypto
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<li class="header">Examples</li>
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<li class="chapter " data-level="2.1" data-path="examples/keyring/">
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<a href="examples/keyring/">
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Keyring
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<ul class="articles">
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<li class="chapter " data-level="2.1.1" data-path="examples/keyring/01_create_account/">
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<a href="examples/keyring/01_create_account/">
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Create Account
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</a>
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</li>
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<li class="chapter " data-level="2.1.2" data-path="examples/keyring/02_load_accounts/">
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<a href="examples/keyring/02_load_accounts/">
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Load Accounts
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</a>
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</li>
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</ul>
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<li class="chapter " data-level="2.2" data-path="examples/util-crypto/">
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<a href="examples/util-crypto/">
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Util-Crypto
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</a>
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<ul class="articles">
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<li class="chapter " data-level="2.2.1" data-path="examples/util-crypto/01_encrypt_decrypt_message_nacl/">
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<a href="examples/util-crypto/01_encrypt_decrypt_message_nacl/">
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Encrypt & Decrypt Message
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</a>
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</li>
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<li class="chapter " data-level="2.2.2" data-path="examples/util-crypto/02_sign_verify_message_nacl/">
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<a href="examples/util-crypto/02_sign_verify_message_nacl/">
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Sign & Verify Message
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</a>
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</li>
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<li class="chapter " data-level="2.2.3" data-path="examples/util-crypto/03_mnemonic_generate_validate_bip39/">
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<a href="examples/util-crypto/03_mnemonic_generate_validate_bip39/">
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Create & Validate Mnemonic
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</a>
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</li>
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Published with GitBook
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<!-- Title -->
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<h1>
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<i class="fa fa-circle-o-notch fa-spin"></i>
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<a href="." >Introduction</a>
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</h1>
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</div>
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<section class="normal markdown-section">
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<h1 id="polkadot-javascript-common">Polkadot Javascript Common</h1>
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<p>Various useful utility functions that are used across all projects in the <a href="https://polkadot.js.org" target="_blank">@polkadot</a> namespace. It provides utility functions with additional safety checks, allowing not only for consistent coding, but also reducing the general boilerplate.</p>
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<p>It is split up into a number of internal packages, namely utilities -</p>
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<ul>
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<li><a href="keyring/">keyring</a> Keyring management</li>
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<li><a href="util/">util</a> General utilities</li>
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<li><a href="util-crypto/">util-crypto</a> Crypto and hashing utilities</li>
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<li><a href="util-rlp/README.md">util-rlp</a> RLP encoding & decoding</li>
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</ul>
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<p>Various useful trie and database interfaces -</p>
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<ul>
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<li><a href="db/README.md">db</a> Sync memory and disk database interfaces</li>
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<li><a href="trie-db/">trie-db</a> Merkle Patricia Tree implementation adapcted for Polkadot</li>
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<li><a href="trie-hash/">trie-hash</a> Calculate hashes (either ordered or unordered) from a set of inputs</li>
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</ul>
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<p>This guide describes Polkadot Javascript Common.</p>
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<h2 id="packages">Packages</h2>
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<ul>
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<li><a href="keyring/">keyring</a></li>
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<li><a href="trie-db/">trie-db</a></li>
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<li><a href="trie-hash/">trie-hash</a></li>
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<li><a href="util/">util</a></li>
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<li><a href="util-crypto/">util-crypto</a></li>
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</ul>
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<h2 id="examples">Examples</h2>
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<ul>
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<li><a href="examples/keyring/">Keyring</a><ul>
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<li><a href="examples/keyring/01_create_account/">Create Account</a></li>
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<li><a href="examples/keyring/02_load_accounts/">Load Accounts</a></li>
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</ul>
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</li>
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<li><a href="examples/util-crypto/">Util-Crypto</a><ul>
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<li><a href="examples/util-crypto/01_encrypt_decrypt_message_nacl/">Encrypt & Decrypt Message</a></li>
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<li><a href="examples/util-crypto/02_sign_verify_message_nacl/">Sign & Verify Message</a></li>
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<li><a href="examples/util-crypto/03_mnemonic_generate_validate_bip39/">Create & Validate Mnemonic</a></li>
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</ul>
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</li>
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</ul>
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<h2 id="the-polkadot-project">The Polkadot Project</h2>
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<p>You can read more about the Polkadot Network at <a href="https://polkadot.network/" target="_blank">https://polkadot.network/</a></p>
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<h2 id="github-repositories">Github repositories</h2>
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<p>You can find the Polkadot repositories at:</p>
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<ul>
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<li><a href="https://github.com/polkadot-js" target="_blank">https://github.com/polkadot-js</a></li>
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<li><a href="https://github.com/paritytech/polkadot" target="_blank">https://github.com/paritytech/polkadot</a></li>
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<li><a href="https://github.com/paritytech/substrate" target="_blank">https://github.com/paritytech/substrate</a></li>
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</ul>
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<p>This documentation is generated from <a href="https://github.com/polkadot-js/api" target="_blank">https://github.com/polkadot-js/api</a></p>
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<h2 id="contributing">Contributing</h2>
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<p>Contribution to Polkadot JS Common are more than welcome. You can <a href="https://github.com/polkadot-js/common/issues/new" target="_blank">report issues</a> and <a href="https://github.com/polkadot-js/common/issues/new" target="_blank">log feature requests</a>.</p>
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</section>
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