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32 lines
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<html class="paged">
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<title>Application Programming Interface</title>
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<div class="logo"><a href="/v5/"><div class="image"></div><div class="name">ethers</div><div class="version">v5.0-beta</div></a></div>
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<div class="toc"><div>
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<div class="link title"><a href="/">Documentation</a></div><div class="base show link depth-1"><a href="/v5/getting-started/">Getting Started</a></div><div class="base show link depth-1"><a href="/v5/concepts/">Ethereum Basics</a></div><div class="hide link depth-2"><a href="/v5/concepts/events/">Events</a></div><div class="hide link depth-2"><a href="/v5/concepts/gas/">Gas</a></div><div class="hide link depth-2"><a href="/v5/concepts/security/">Security</a></div><div class="base myself ancestor ancestor show link depth-1"><a href="/v5/api/">Application Programming Interface</a></div><div class="child show link depth-2"><a href="/v5/api/contract/">Contract Interaction</a></div><div class="hide link depth-3"><a href="/v5/api/contract/contract/">Contract</a></div><div class="hide link depth-3"><a href="/v5/api/contract/contract-factory/">ContractFactory</a></div><div class="hide link depth-3"><a href="/v5/api/contract/example/">Example: ERC-20 Contract</a></div><div class="child show link depth-2"><a href="/v5/api/signer/">Signers</a></div><div class="child show link depth-2"><a href="/v5/api/providers/">Providers</a></div><div class="hide link depth-3"><a href="/v5/api/providers/provider/">Provider</a></div><div class="hide link depth-3"><a href="/v5/api/providers/jsonrpc-provider/">JsonRpcProvider</a></div><div class="hide link depth-3"><a href="/v5/api/providers/api-providers/">API Providers</a></div><div class="hide link depth-3"><a href="/v5/api/providers/other/">Other Providers</a></div><div class="hide link depth-3"><a href="/v5/api/providers/types/">Types</a></div><div class="child show link depth-2"><a href="/v5/api/utils/">Utilities</a></div><div class="hide link depth-3"><a href="/v5/api/utils/abi/">Application Binary Interface</a></div><div class="hide link depth-4"><a href="/v5/api/utils/abi/interface/">Interface</a></div><div class="hide link depth-4"><a href="/v5/api/utils/abi/fragments/">Fragments</a></div><div class="hide link depth-3"><a href="/v5/api/utils/address/">Addresses</a></div><div class="hide link depth-3"><a href="/v5/api/utils/bignumber/">BigNumber</a></div><div class="hide link depth-3"><a href="/v5/api/utils/bytes/">Byte Manipulation</a></div><div class="hide link depth-3"><a href="/v5/api/utils/constants/">Constants</a></div><div class="hide link depth-3"><a href="/v5/api/utils/display-logic/">Display Logic and Input</a></div><div class="hide link depth-3"><a href="/v5/api/utils/encoding/">Encoding Utilities</a></div><div class="hide link depth-3"><a href="/v5/api/utils/fixednumber/">FixedNumber</a></div><div class="hide link depth-3"><a href="/v5/api/utils/hashing/">Hashing Algorithms</a></div><div class="hide link depth-3"><a href="/v5/api/utils/hdnode/">HD Wallet</a></div><div class="hide link depth-3"><a href="/v5/api/utils/logger/">Logging</a></div><div class="hide link depth-3"><a href="/v5/api/utils/properties/">Property Utilities</a></div><div class="hide link depth-3"><a href="/v5/api/utils/signing-key/">Signing Key</a></div><div class="hide link depth-3"><a href="/v5/api/utils/strings/">Strings</a></div><div class="hide link depth-3"><a href="/v5/api/utils/transactions/">Transactions</a></div><div class="hide link depth-3"><a href="/v5/api/utils/web/">Web Utilities</a></div><div class="hide link depth-3"><a href="/v5/api/utils/wordlists/">Wordlists</a></div><div class="child show link depth-2"><a href="/v5/api/other/">Other Libraries</a></div><div class="hide link depth-3"><a href="/v5/api/other/assembly/">Assembly</a></div><div class="hide link depth-4"><a href="/v5/api/other/assembly/dialect/">Ethers ASM Dialect</a></div><div class="hide link depth-4"><a href="/v5/api/other/assembly/api/">Utilities</a></div><div class="hide link depth-4"><a href="/v5/api/other/assembly/ast/">Abstract Syntax Tree</a></div><div class="hide link depth-3"><a href="/v5/api/other/hardware/">Hardware Wallets</a></div><div class="child show link depth-2"><a href="/v5/api/experimental/">Experimental</a></div><div class="base show link depth-1"><a href="/v5/cli/">Command Line Interfaces</a></div>
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<div class="breadcrumbs"><a href="/v5/">Documentation</a> » <span class="current">Application Programming Interface</span></div>
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<a name="api"></a><a name="api"></a><h1 class="show-anchors"><div>Application Programming Interface<div class="anchors"><a class="self" href="/v5/api/#api"></a></div></div></h1><p>An Application Programming Interface (API) is the formal specification of the library.</p>
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<div class="toc"><div style="padding-left: 0px"><span class="bullet">•</span><a href="/v5/api/contract/">Contract Interaction</a></div><div style="padding-left: 28px"><span class="bullet">•</span><a href="/v5/api/contract/contract/">Contract</a></div><div style="padding-left: 56px"><span class="bullet">•</span><a href="/v5/api/contract/contract/#contract--creating">Creating Instances</a></div><div style="padding-left: 56px"><span class="bullet">•</span><a href="/v5/api/contract/contract/#contrct--properties">Properties</a></div><div style="padding-left: 56px"><span class="bullet">•</span><a href="/v5/api/contract/contract/#Contract--methods">Methods</a></div><div style="padding-left: 56px"><span class="bullet">•</span><a href="/v5/api/contract/contract/#Contract--events">Events</a></div><div style="padding-left: 56px"><span class="bullet">•</span><a href="/v5/api/contract/contract/#contract--metaclass">Meta-Class</a></div><div style="padding-left: 28px"><span class="bullet">•</span><a href="/v5/api/contract/contract-factory/">ContractFactory</a></div><div style="padding-left: 56px"><span class="bullet">•</span><a href="/v5/api/contract/contract-factory/#ContractFactory--creating">Creating Instances</a></div><div style="padding-left: 56px"><span class="bullet">•</span><a href="/v5/api/contract/contract-factory/#ContractFactory--properties">Properties</a></div><div style="padding-left: 56px"><span class="bullet">•</span><a href="/v5/api/contract/contract-factory/#ContractFactory--methods">Methods</a></div><div style="padding-left: 28px"><span class="bullet">•</span><a href="/v5/api/contract/example/">Example: ERC-20 Contract</a></div><div style="padding-left: 56px"><span class="bullet">•</span><a href="/v5/api/contract/example/#example-erc-20-contract--connecting-to-a-contract">Connecting to a Contract</a></div><div style="padding-left: 56px"><span class="bullet">•</span><a href="/v5/api/contract/example/#example-erc-20-contract--properties">Properties</a></div><div style="padding-left: 56px"><span class="bullet">•</span><a href="/v5/api/contract/example/#example-erc-20-contract--methods">Methods</a></div><div style="padding-left: 56px"><span class="bullet">•</span><a href="/v5/api/contract/example/#erc20-events">Events</a></div><div style="padding-left: 56px"><span class="bullet">•</span><a href="/v5/api/contract/example/#example-erc-20-contract--meta-class-methods">Meta-Class Methods</a></div><div style="padding-left: 56px"><span class="bullet">•</span><a href="/v5/api/contract/example/#example-erc-20-contract--meta-class-filters">Meta-Class Filters</a></div><div style="padding-left: 0px"><span class="bullet">•</span><a href="/v5/api/signer/">Signers</a></div><div style="padding-left: 28px"><span class="bullet">•</span><a href="/v5/api/signer/#Signer">Signer</a></div><div style="padding-left: 28px"><span class="bullet">•</span><a href="/v5/api/signer/#Wallet">Wallet</a></div><div style="padding-left: 28px"><span class="bullet">•</span><a href="/v5/api/signer/#VoidSigner">VoidSigner</a></div><div style="padding-left: 28px"><span class="bullet">•</span><a href="/v5/api/signer/#ExternallyOwnedAccount">ExternallyOwnedAccount</a></div><div style="padding-left: 0px"><span class="bullet">•</span><a href="/v5/api/providers/">Providers</a></div><div style="padding-left: 28px"><span class="bullet">•</span><a href="/v5/api/providers/provider/">Provider</a></div><div style="padding-left: 56px"><span class="bullet">•</span><a href="/v5/api/providers/provider/#Provider--account-methods">Accounts Methods</a></div><div style="padding-left: 56px"><span class="bullet">•</span><a href="/v5/api/providers/provider/#Provider--block-methods">Blocks Methods</a></div><div style="padding-left: 56px"><span class="bullet">•</span><a href="/v5/api/providers/provider/#Provider--ethereum-naming-service-ens-methods">Ethereum Naming Service (ENS) Methods</a></div><div style="padding-left: 56px"><span class="bullet"
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<div class="nav previous"><a href="/v5/concepts/security/"><span class="arrow">←</span>Security</a></div>
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