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4,381 search results found

A highly optimised, light-weight JS utility for Ethereum.

Augur Core ⭐ 561

Augur back-end (Ethereum contracts)

Go Iost ⭐ 560

Official Go implementation of the IOST blockchain

Aaveflashloan ⭐ 552

1st Place 🏆 in the Gitcoin Web3 World Aave Hackathon. A bot that does arbitrage between two Uniswap exchanges using an Aave Flashloan as the capital for initial trade. Got a nice write up from the Aave team - https://medium.com/aave/gitcoin-x-aave-hackathon-r

Mango: Git, completely decentralised.

Import Linter ⭐ 549

Import Linter allows you to define and enforce rules for the internal and external imports within your Python project.

Opensea Erc1155 ⭐ 547

Example semi-fungible collectible, to demonstrate OpenSea integration for an ERC-1155 contract

Btcrelay ⭐ 546

Ethereum contract for Bitcoin SPV: Live on https://etherscan.io/address/0x41f274c0023f83391de

Contracts ⭐ 536

Solidity smart contracts of CodeforDAO

Audius Protocol ⭐ 534

The Audius Protocol - Freedom to share, monetize, and listen to any audio content.

Pact Python ⭐ 528

Python version of Pact. Enables consumer driven contract testing, providing a mock service and DSL for the consumer project, and interaction playback and verification for the service provider project.

Merkle Distributor ⭐ 522

📦 A smart contract that distributes a balance of tokens according to a merkle root

Drizzle Legacy ⭐ 519

Reactive Ethereum datastore for dapp UIs.

Cadence ⭐ 516

Cadence, the resource-oriented smart contract programming language 🏃‍♂️

Verified Smart Contracts ⭐ 516

Smart contracts which are formally verified

Spot is a concise, developer-friendly way to describe your API contract.

Killcord ⭐ 512

a censorship resistant deadman's switch

Celo Blockchain ⭐ 509

Official repository for the golang Celo Blockchain

Flashloan Box ⭐ 508

A box containing all you need to get started with developing Aave v1 flash loans

🏝 automated contract testing via type checking for Elixir functions and mocks

Eosio.cdt ⭐ 503

EOSIO.CDT (Contract Development Toolkit) is a suite of tools used to build EOSIO contracts

Ignition Contracts ⭐ 496

The contracts used to display solutions on Ignition and Flare

🛠️ A smart contract UI for your Ethereum dapp project

Erc223 Token Standard ⭐ 489

ERC-223 token standard reference implementation.

Ethereum Input Data Decoder ⭐ 487

Ethereum smart contract transaction input data decoder

Smartbugs ⭐ 487

SmartBugs: A Framework to Analyze Ethereum Smart Contracts

Solidity Examples ⭐ 485

Loose collection of Solidity example code

Atomicswap ⭐ 482

On-chain atomic swaps for Decred and other cryptocurrencies.

Contract ⭐ 480

A signable contract that lives in a single file

REST API Testing Tool for all levels in a Test Pyramid

Vanityeth ⭐ 474

Ethereum vanity address generator

Tenderly Cli ⭐ 471

CLI tool for Smart Contract error tracking, monitoring and alerting.

Argent Contracts ⭐ 470

Smart Contracts for Argent Wallet

Mockingjay Server ⭐ 468

Fake server, Consumer Driven Contracts and help with testing performance from one configuration file with zero system dependencies and no coding whatsoever

A blockchain for trust-free markets in financial derivatives

Flow Nft ⭐ 463

The non-fungible token standard on the Flow blockchain

Top Blockchain Paper ⭐ 460

Top Blockchain paper, such as CCS, NSDI, S&P, EuroS&P, CRYPTO, etc.

Cryptokitties Bounty ⭐ 456

Bounty program for CryptoKitties smart contract

Chainlink Mix ⭐ 453

Working with smart contracts with eth-brownie, python, and Chainlink.

Brightstardb ⭐ 450

This is the core development repository for BrightstarDB.

Truffle Plugin Verify ⭐ 447

✅ Verify your smart contracts on Etherscan from the Truffle CLI

Servicecomb Toolkit ⭐ 444

Apache servicecomb

Blockchain For Software Engineers ⭐ 443

A curated list of resources for blockchain engineers

Ethereum Examples ⭐ 441

Code examples showing how to use the Provable API on Ethereum

Awesome Smart Contracts ⭐ 440

🕶 List of awesome platforms for smart contracts

Colonynetwork ⭐ 440

Colony Network smart contracts

Smart Contract Security Verification Standard

Pipecat ⭐ 433

Connect UNIX pipes and message queues

Gastoken ⭐ 429

⛽ Tokenize gas on Ethereum with GasToken ⛽

Template Ethereum Contracts ⭐ 424

Template to develop ethereum smart contracts

List of 4byte identifiers for EVM smart contract functions

Near Sdk Rs ⭐ 422

Rust library for writing NEAR smart contracts

Contracts ⭐ 416

A set of reusable smart-contracts

Ethereum transaction visualizer. Generates UML sequence diagram for a transaction's contract calls.

Openapi3 Ts ⭐ 408

TS Model & utils for creating and exposing OpenAPI 3.x contracts.

Your_first_decentralized_application ⭐ 408

This is the code for "A Guide to Building Your First Decentralized Application" by Siraj Raval on Youtube

Augur v2 - Prediction Market Protocol and Client

Solidity Docgen ⭐ 407

Documentation generator for Solidity projects

Ethereum Php ⭐ 406

PHP interface to Ethereum JSON-RPC API. Fully typed Web3 for PHP 7.X

Kitty Items ⭐ 405

Kitty Items: CryptoKitties Sample App

Contract Metadata ⭐ 403

A mapping of ethereum contract addresses to broadly accepted icons for those addresses.

Dotnetstack ⭐ 400

.NET technology stack, including frameworks, platforms, IDE, SDKs, desktop, web, SOA, data, productivity, components, tools etc

Web3dart ⭐ 396

Ethereum library, written in Dart.

Pacto settles disputes between JSON providers and consumers

Typescript Solidity Dev Starter Kit ⭐ 395

Starter kit for smart contract development using Typescript

Hardhat Gas Reporter ⭐ 385

Gas usage per unit test. Average gas usage per method. (eth-gas-reporter for Hardhat)

Contracts ⭐ 385

PyContracts is a Python package that allows to declare constraints on function parameters and return values. Contracts can be specified using Python3 annotations, or inside a docstring. PyContracts supports a basic type system, variables binding, arithmetic constraints, and has several specialized contracts and an extension API.

🐪 Super simple, clean. Contracts for Ruby

Metamorphic ⭐ 381

A factory contract for creating metamorphic (i.e. redeployable) contracts.

Openzeppelin Test Helpers ⭐ 380

Assertion library for Ethereum smart contract testing

Microraiden ⭐ 372

Spring Cloud Contract Samples ⭐ 366

Samples for Spring Cloud Contract project

React Ethereum Dapp Example ⭐ 363

A starter boilerplate for an Ethereum dapp using web3.js v1.0, truffle, react, and parity

Smart Contracts ⭐ 361

Main smart contracts for Kyber Network, including the main platform contract, reserve contracts etc.

Moralis Js Sdk ⭐ 358

Moralis Official Javascript SDK

Eos Smart Contract Security Best Practices ⭐ 357

A guide to EOS smart contract security best practices

Smartdev Contract ⭐ 354

Solidity智能合约库，包含了基础类型到上层业务的一系列智能合约库代码，便于开发者借鉴、引入和复

Theta Protocol Ledger ⭐ 353

Reference implementation of the Theta Blockchain Ledger Protocol

Hydrachain ⭐ 352

Permissioned Distributed Ledger based on Ethereum

Tronweb ⭐ 341

Javascript API Library for interacting with the TRON Network

Basic cosmos-sdk app with web assembly smart contracts

Stainless ⭐ 339

Verification framework and tool for higher-order Scala programs

Dotta License ⭐ 336

ERC721-based Software Licensing Framework

Nba Smart Contracts ⭐ 331

Smart contracts and transactions for Topshot, the official NBA digital collectibles game on the Flow Blockchain

Create Near App ⭐ 326

Create a starter app hooked up to the NEAR blockchain

Protocol ⭐ 321

Example implementations of tokens to represent unique assets, such as collectibles or deeds, using the NEP-171 spec (similar to ERC-721)

Awesome Buggy Erc20 Tokens ⭐ 320

A Collection of Vulnerabilities in ERC20 Smart Contracts With Tokens Affected

Icontract ⭐ 320

Design-by-contract in Python3 with informative violation messages and inheritance

Lido Dao ⭐ 320

Lido DAO smart contracts

Ethereum Graph Debugger ⭐ 319

Ethereum solidity graph plain debugger. To have the whole picture when debugging.

Umbra Protocol ⭐ 318

🌕🌑 Privacy Preserving Shielded Payments On The Ethereum Blockchain

The Numeraire Ethereum Smart Contract

Core Contracts ⭐ 313

Core contracts: reference staking pool, lockup, voting, whitelist, multisig.

Boringsolidity ⭐ 313

Basic Solidity Contracts and Libraries to make life easier

Solidity School ⭐ 311

First place for early developers to learn Solidity

Ethereum Multicall ⭐ 310

Ability to call many ethereum constant function calls in 1 JSONRPC request

Contracts ⭐ 310

Contracts repository for The Graph protocol

Keep3r.network ⭐ 309

An incentivized keeper network for anonymous keeper and job registration

Smartcheck ⭐ 308

SmartCheck – a static analysis tool that detects vulnerabilities and bugs in Solidity programs (Ethereum-based smart contracts).

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