{"id":34131574,"url":"https://github.com/0xsha/chainwalker","last_synced_at":"2026-03-09T23:02:26.986Z","repository":{"id":38344742,"uuid":"500387382","full_name":"0xsha/ChainWalker","owner":"0xsha","description":"Rapid Smart Contract Crawler","archived":false,"fork":false,"pushed_at":"2024-05-27T19:12:34.000Z","size":5542,"stargazers_count":195,"open_issues_count":1,"forks_count":27,"subscribers_count":7,"default_branch":"main","last_synced_at":"2024-11-21T12:44:36.841Z","etag":null,"topics":["blockchain","crawler","dataset","evm-bytecode","geth","security","smart-contracts","web3"],"latest_commit_sha":null,"homepage":"","language":"Go","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/0xsha.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2022-06-06T10:27:26.000Z","updated_at":"2024-11-17T16:23:28.000Z","dependencies_parsed_at":"2023-02-16T10:45:42.618Z","dependency_job_id":"d78f4527-eb78-4b23-a4f2-192c0f351049","html_url":"https://github.com/0xsha/ChainWalker","commit_stats":{"total_commits":25,"total_committers":2,"mean_commits":12.5,"dds":0.4,"last_synced_commit":"e51a5cb9a9a5bf7f723a4e6da691114a12e5030f"},"previous_names":[],"tags_count":1,"template":false,"template_full_name":null,"purl":"pkg:github/0xsha/ChainWalker","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/0xsha%2FChainWalker","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/0xsha%2FChainWalker/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/0xsha%2FChainWalker/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/0xsha%2FChainWalker/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/0xsha","download_url":"https://codeload.github.com/0xsha/ChainWalker/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/0xsha%2FChainWalker/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":30315971,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-03-09T20:05:46.299Z","status":"ssl_error","status_checked_at":"2026-03-09T19:57:04.425Z","response_time":61,"last_error":"SSL_connect returned=1 errno=0 peeraddr=140.82.121.6:443 state=error: unexpected eof while 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":["blockchain","crawler","dataset","evm-bytecode","geth","security","smart-contracts","web3"],"created_at":"2025-12-15T00:54:30.397Z","updated_at":"2026-03-09T23:02:26.967Z","avatar_url":"https://github.com/0xsha.png","language":"Go","funding_links":[],"categories":[],"sub_categories":[],"readme":"![chainwalker](./assets/ChainWalker.png)\n\n\n## What\n[ChainWalker](https://0xsha.io/blog/lets-walk-on-the-chains-creating-a-smart-contract-crawler) is a smart contract scraper which uses RCP/IPC calls to extract the information. A small tool that can help us find contracts, extract the EVM code, and disassemble the opcodes. It allows us to select specific blocks or even specific contract balances. \n\n\n\n\n## Features \n- cross-platform \n- concurrent and fast \n- It doesn't require 3rd party API \n- downloads contract EVM\n- disassemble EVM to opcode \n\n\n## Use cases\n- academia: machine learning and data science, sampling contracts \n- cybersecurity: audit companies, threat intel, researchers \n- web3.0 startups: building next dApps, building web3.0 and blockchain specific APIs \n- marketing: unique insights (to make educated guesses)\n\n## Usage \n[Download](https://github.com/0xsha/ChainWalker/releases/tag/v1.0.5) the artifact for your distro from the release section, execute it and follow the usage guide.\n\nif you want to use EVM downloader (without ```-p```) option make sure you have EVM installed \n\n```\n\nchainwalker -h\n7:50PM INF ChainWalker 1.0.3-alpha - Usage\n  -b float\n    \tminimum balance (default 0)\n  -c int\n    \tconcurrency (default 1)\n  -d\tsets log level to debug\n  -e int\n    \tend block (int) (default 14010000)\n  -ev string\n    \tEVM path (default \"/usr/local/bin/evm\")\n  -h\tshows usage\n  -o string\n    \toutput directory (default \"output/\")\n  -p\tprint on console only and do not download or disassemble contracts\n  -s int\n    \tstart block (int) (default 14000000)\n  -u string\n    \tRCP/IPC endpoint (default \"https://cloudflare-eth.com\")\n```\n\n\n## Demo\n\n\nExtracts contracts with minumum balance of 3 eth \n\n![chainwalker](./assets/ContractWithMinBalance.png)\n\n\nExtracts contracts any balance on given block \n\n![chainwalker](./assets/contractsWithoutMinBalance.png)\n\n\nwithout ```-p``` option this is what created output will look like\n\n![chainwalker](./assets/Output.png)\n\n\n\n\n\n## limitation \n\n- can not directly grab internal contract transactions \n\n## Dev \n- clone the repo\n```\ngo build main.go \n```\n\n\n## Troubleshooting \nIf you are using a remote server and the program crashes or gives you an error, here are things you can try. \n- try to lower the concurrency number to as low as 1 \n- make sure you didn't hit the API limits of your provider \n- change the node provider \n- change the block numbers \n- go with a smaller block distance (between start and end)\n- make sure output directory exists in same directory as binary\n- better solution : run you own node and connect to IPC using ``` /root/.ethereum/geth.ipc as -u  (url) ```\n\n\n\nCredits :\n- eth.wiki\n- core-geth\n- go-Ethereum\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2F0xsha%2Fchainwalker","html_url":"https://awesome.ecosyste.ms/projects/github.com%2F0xsha%2Fchainwalker","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2F0xsha%2Fchainwalker/lists"}