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reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["merkle","patricia","proof","solidity","tree"],"created_at":"2024-11-09T23:26:00.870Z","updated_at":"2026-03-09T17:14:00.870Z","avatar_url":"https://github.com/commitground.png","language":"JavaScript","readme":"# Solidity Patricia Tree\n\n## Credits \n\nThis is a rewritten version of [Christian Reitwießner](https://github.com/chriseth)'s [patricia-trie](https://github.com/chriseth/patricia-trie) to use his patricia tree implementation as a solidity library through npm.\n\n\n##### latest released version\n[![npm](https://img.shields.io/npm/v/solidity-patricia-tree/latest.svg)](https://www.npmjs.com/package/solidity-patricia-tree)\n[![Build Status](https://travis-ci.org/commitground/solidity-patricia-tree.svg?branch=master)](https://travis-ci.org/commitground/solidity-patricia-tree)\n[![Coverage Status](https://coveralls.io/repos/github/commitground/solidity-patricia-tree/badge.svg?branch=master)](https://coveralls.io/github/commitground/solidity-patricia-tree?branch=develop)\n\n##### in progress\n[![npm](https://img.shields.io/npm/v/solidity-patricia-tree/next.svg)](https://www.npmjs.com/package/solidity-patricia-tree)\n[![Build Status](https://travis-ci.org/commitground/solidity-patricia-tree.svg?branch=develop)](https://travis-ci.org/commitground/solidity-patricia-tree)\n[![Coverage Status](https://coveralls.io/repos/github/commitground/solidity-patricia-tree/badge.svg?branch=develop)](https://coveralls.io/github/commitground/solidity-patricia-tree?branch=develop)\n\n[![JavaScript Style Guide](https://cdn.rawgit.com/standard/standard/master/badge.svg)](https://github.com/standard/standard)\n\n\n\n## Usage\n\n```bash\nnpm i solidity-patricia-tree\n```\n\n```solidity\n\npragma solidity ^0.4.25;\n\nimport {PatriciaTree} from \"solidity-patricia-tree/contracts/tree.sol\"; \n\ncontract TestPatriciaTree {\n    using PatriciaTree for PatriciaTree.Tree;\n    PatriciaTree.Tree tree;\n\n    function test() public {\n        // testInsert();\n        testProofs();\n    }\n\n    function testInsert() internal {\n        tree.insert(\"one\", \"ONE\");\n        tree.insert(\"two\", \"ONE\");\n        tree.insert(\"three\", \"ONE\");\n        tree.insert(\"four\", \"ONE\");\n        tree.insert(\"five\", \"ONE\");\n        tree.insert(\"six\", \"ONE\");\n        tree.insert(\"seven\", \"ONE\");\n        // update\n        tree.insert(\"one\", \"TWO\");\n    }\n\n    function testProofs() internal {\n        tree.insert(\"one\", \"ONE\");\n        uint branchMask;\n        bytes32[] memory siblings;\n        (branchMask, siblings) = tree.getProof(\"one\");\n        PatriciaTree.verifyProof(tree.root, \"one\", \"ONE\", branchMask, siblings);\n        tree.insert(\"two\", \"TWO\");\n        (branchMask, siblings) = tree.getProof(\"one\");\n        PatriciaTree.verifyProof(tree.root, \"one\", \"ONE\", branchMask, siblings);\n        (branchMask, siblings) = tree.getProof(\"two\");\n        PatriciaTree.verifyProof(tree.root, \"two\", \"TWO\", branchMask, siblings);\n    }\n}\n```\n\n\n## Development \n\n### Pre-requisites\n\n```bash\nnpm install -g truffle\nnpm install -g ganache\nnpm install\n```\n\n### Tests\n\nTest cases include the information about how the functions work, but also includes a demo scenario.\nRunning and reading the test cases will help you understand how it works.\n\n```bash\nnpm run test\n```\n\n\n## Contributors\n- Original author: [Christian Reitwießner](https://github.com/chriseth)\n- [Wanseob Lim](https://github.com/james-lim)\u003c[email@wanseob.com](mailto:email@wanseob.com)\u003e\n\n## License\n\n[MIT LICENSE](./LICENSE)\n","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcommitground%2Fsolidity-patricia-tree","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fcommitground%2Fsolidity-patricia-tree","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcommitground%2Fsolidity-patricia-tree/lists"}