Optimism

The 4EVERLAND RPC request data format follows the Ethereum standard JSON-RPC and supports all methods specified in the Ethereum JSON RPC. This tutorial will illustrate the request method for the eth_getBalance as an example. Other methods can be referenced using this example.

API Endpoints

The requested URL, combined with the API Key, is as follows:

Endpoint(https): https://opt-mainnet.4everland.org/v1/{apikey}

Endpoint(wss): wss://opt-mainnet.4everland.org/ws/v1/{apikey}

Example

Take eth_getBalance method as an example

Parameters

1. DATA, 20 Bytes - address to check for balance.

2. QUANTITY|TAG - integer block number, or the string "latest", "earliest" or "pending"

params: ["0x407d73d8a49eeb85d32cf465507dd71d507100c1", "latest"]

Request Example

curl --request POST \
     --url https://opt-mainnet.4everland.org/v1/1659dfb40aa24bbb8153a677b98064d7 \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "params": [
    "0x145BD3C05D8d3117d133f577fa9af538ba353e8C",
    "latest"
  ],
  "method": "eth_getBalance"
}
'

Response Example

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x2eb9bcf4ec145"
}

Networks

For Optimism, the supported chain is currently limited to Mainnet.

Block range limitaion

When considering the block range, it is important to note that the response size for the getFilterLogs and getLogs methods varies accordingly. Specifically:

• Block range exceeding 50K: Unavailable for querying.

• Block range less than or equal to 100: Experiences no limitation on response size.

• Block range falling between 100 and 50K: At most, 50K records will be provided in the response.

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