<html><head><title>API Providers</title><linkrel="stylesheet"type="text/css"href="/static/style.css"></head><body><divclass="sidebar"><divclass="header"><divclass="logo"><ahref="/"><divclass="image"></div><divclass="name">ethers</div><divclass="version">v5.0-beta</div></a></div></div><divclass="toc"><div><divclass="link title"><ahref="/">Documentation</a></div><divclass="base show link depth-1"><ahref="/getting-started/">Getting Started</a></div><divclass="hide link depth-2"><ahref="/getting-started/#installing">Installing</a></div><divclass="hide link depth-2"><ahref="/getting-started/#importing">Importing</a></div><divclass="base show link depth-1"><ahref="/concepts/">Concepts</a></div><divclass="hide link depth-2"><ahref="/concepts/events/">Events</a></div><divclass="hide link depth-3"><ahref="/concepts/events/#solidity-topics">Solidity Topics</a></div><divclass="hide link depth-2"><ahref="/concepts/gas/">Gas</a></div><divclass="hide link depth-3"><ahref="/concepts/gas/#gas-price">Gas Price</a></div><divclass="hide link depth-3"><ahref="/concepts/gas/#gas-limit">Gas Limit</a></div><divclass="base ancestor show link depth-1"><ahref="/api/">Application Programming Interface</a></div><divclass="show link depth-2"><ahref="/api/contract/">Contracts</a></div><divclass="hide link depth-3"><ahref="/api/contract/#buckets">Buckets</a></div><divclass="show link depth-2"><ahref="/api/signer/">Signers</a></div><divclass="hide link depth-3"><ahref="/api/signer/#signer">Signer</a></div><divclass="hide link depth-3"><ahref="/api/signer/#wallet-inherits-signer">Wallet inherits Signer</a></div><divclass="ancestor show link depth-2"><ahref="/api/providers/">Providers</a></div><divclass="show link depth-3"><ahref="/api/providers/provider/">Provider</a></div><divclass="hide link depth-4"><ahref="/api/providers/provider/#accounts-methods">Accounts Methods</a></div><divclass="hide link depth-4"><ahref="/api/providers/provider/#blocks-methods">Blocks Methods</a></div><divclass="hide link depth-4"><ahref="/api/providers/provider/#ethereum-naming-service-(ens)-methods">Ethereum Naming Service (ENS) Methods</a></div><divclass="hide link depth-4"><ahref="/api/providers/provider/#logs-methods">Logs Methods</a></div><divclass="hide link depth-4"><ahref="/api/providers/provider/#network-status-methods">Network Status Methods</a></div><divclass="hide link depth-4"><ahref="/api/providers/provider/#transactions-methods">Transactions Methods</a></div><divclass="hide link depth-4"><ahref="/api/providers/provider/#event-emitter-methods">Event Emitter Methods</a></div><divclass="hide link depth-4"><ahref="/api/providers/provider/#inspection-methods">Inspection Methods</a></div><divclass="show link depth-3"><ahref="/api/providers/jsonrpc-provider/">JSON-RPC Provider</a></div><divclass="hide link depth-4"><ahref="/api/providers/jsonrpc-provider/#jsonrpcprovider">JsonRpcProvider</a></div><divclass="hide link depth-4"><ahref="/api/providers/jsonrpc-provider/#jsonrpcsigner">JsonRpcSigner</a></div><divclass="hide link depth-4"><ahref="/api/providers/jsonrpc-provider/#jsonrpcuncheckedsigner">JsonRpcUncheckedSigner</a></div><divclass="myself ancestor ancestor show link depth-3"><ahref="/api/providers/api-providers/">API Providers</a></div><divclass="child link depth-4"><ahref="/api/providers/api-providers/#etherscanprovider">EtherscanProvider</a></div><divclass="child link depth-4"><ahref="/api/providers/api-providers/#infuraprovider">InfuraProvider</a></div><divclass="child link depth-4"><ahref="/api/providers/api-providers/#nodesmithprovider">NodesmithProvider</a></div><divclass="child link depth-4"><ahref="/api/providers/api-providers/#alchemyprovider">AlchemyProvider</a></div><divclass="child link depth-4"><ahref="/api/providers/api-providers/#cloudfrontprovider">CloudfrontProvider</a></div><divclass="show link depth-3"><ahref="/api/providers/other/">Other Providers</a></div><divclass="hide link depth-4"><ahref="/api/providers/other/#fallbackprovider">FallbackProvider</a><
<p>There are many services which offer a web API for accessing the Ethereum Blockchain. These Providers allow connecting to them, which simplifies development, since you do not need to run your own instance or cluster of Ethereum nodes.</p><p>However, this reliance on third-party services can reduce resiliance, security and increase the amount of required trust. To mitigate these issues, it is recommended you use a <ahref="/api/providers/#get-default-provider">Default Provider</a>.</p>
<p>The <b>InfuraProvider</b> is backed by the popular <ahref="https://infura.io">INFURA</a> Ethereum service.</p><p>It supports Mainnet (homestead) and all common testnets (Ropsten, Rinkeby, Görli and Kovan).</p>
<p>The <b>NodesmithProvider</b> is backed by <ahref="https://nodesmith.io">Nodesmith</a>.</p><p>It supports Mainnet (homestead) and all common testnets (Ropsten, Rinkeby, Görli and Kovan), as well as the Ethereum-like network <ahref="https://aion.network">Aion</a>.</p>
<p>The <b>AlchemtProvider</b> is backed by <ahref="https://alchemyapi.io">Alchemy</a>.</p><p>It supports Mainnet (homestead) and all common testnets (Ropsten, Rinkeby, Görli and Kovan).</p>
<p>The CloudfrontProvider is backed by the <ahref="https://developers.cloudflare.com/distributed-web/ethereum-gateway/">Cloudflare Ethereum Gateway</a>.</p><p>It only supports Mainnet (homestead).</p><divclass="footer"><divclass="nav previous"><ahref="/api/providers/jsonrpc-provider/"><spanclass="arrow">←</span>JSON-RPC Provider</a></div><divclass="nav next"><ahref="/api/providers/other/">Other Providers<spanclass="arrow">→</span></a></div></div><divclass="copyright">The content of this site is licensed under the <ahref="https://choosealicense.com/licenses/cc-by-4.0/">Creative Commons Attribution 4.0 International License</a>.</div></div><scriptsrc="/script.js"type="text/javascript"></script></body></html><!-- ContentHash:d189a436e059372e8d4acc37ea92c4f91bd48d8bf0ab48e737087ce330d8be13 -->
