Kotlin SDK networks - Polygon Developer Docs

The Kotlin SDK uses a finite network registry. Network has a private constructor, so wallet and indexer operations accept only the entries included in the current SDK build. There is no arbitrary custom-chain constructor.

Look up a network

Use a constant when the chain is known at compile time:

import technology.polygon.omswallet.Network

val network = Network.AMOY
println("${network.displayName}: ${network.id}")

Use the registry for runtime lookup:

import technology.polygon.omswallet.OMSWalletNetworks

val byId = OMSWalletNetworks.findById(80002)
val byName = OMSWalletNetworks.findByName("amoy")

OMSWalletNetworks.supportedNetworks.forEach { network ->
    println("${network.id} ${network.displayName}")
}

findByName trims the input and compares the registry name without case sensitivity. Both lookup methods return null for an unsupported network. Each Network exposes id, routing name, displayName, nativeTokenSymbol, and explorerUrl.

Supported registry

Constant	Chain ID	Name	Display name	Native symbol
`Network.MAINNET`	1	`mainnet`	Ethereum	ETH
`Network.SEPOLIA`	11155111	`sepolia`	Sepolia	ETH
`Network.POLYGON`	137	`polygon`	Polygon	POL
`Network.AMOY`	80002	`amoy`	Polygon Amoy	POL
`Network.ARBITRUM`	42161	`arbitrum`	Arbitrum	ETH
`Network.ARBITRUM_SEPOLIA`	421614	`arbitrum-sepolia`	Arbitrum Sepolia	ETH
`Network.OPTIMISM`	10	`optimism`	Optimism	ETH
`Network.OPTIMISM_SEPOLIA`	11155420	`optimism-sepolia`	Optimism Sepolia	ETH
`Network.BASE`	8453	`base`	Base	ETH
`Network.BASE_SEPOLIA`	84532	`base-sepolia`	Base Sepolia	ETH
`Network.BSC`	56	`bsc`	BSC	BNB
`Network.BSC_TESTNET`	97	`bsc-testnet`	BSC Testnet	BNB
`Network.ARBITRUM_NOVA`	42170	`arbitrum-nova`	Arbitrum Nova	ETH
`Network.AVALANCHE`	43114	`avalanche`	Avalanche	AVAX
`Network.AVALANCHE_TESTNET`	43113	`avalanche-testnet`	Avalanche Testnet	AVAX
`Network.KATANA`	747474	`katana`	Katana	ETH

The registry describes chains accepted by this SDK build. Testnet transaction fees are sponsored; mainnet sponsorship is reported during transaction preparation.

Public API reference

Use the Kotlin API reference for exhaustive signatures, public models, and error contracts. The workflow pages in this section cover normal usage and the decisions that affect behavior.

​Look up a network

​Supported registry

​Public API reference

Look up a network

Supported registry

Public API reference