system_properties

Description

Returns chain-specific properties clients need for address encoding and unit conversions.

Parameters

This method does not require any parameters.

Returns

Field	Type	Description
ss58Format	number	SS58 address prefix (5 for Astar)
tokenSymbol	string	Native token symbol (ASTR)
tokenDecimals	number or array	Number of decimal places (18)

Request Example

{
  "jsonrpc": "2.0",
  "method": "system_properties",
  "params": [],
  "id": 1
}

Response Example

{
  "jsonrpc": "2.0",
  "result": {
    "ss58Format": 5,
    "tokenDecimals": 18,
    "tokenSymbol": "ASTR"
  },
  "id": 1
}

Code Examples

cURL

curl https://api-astar.n.dwellir.com/YOUR_API_KEY \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "system_properties",
    "params": [],
    "id": 1
  }'

Python

from substrateinterface import SubstrateInterface

substrate = SubstrateInterface(
    url="wss://api-astar.n.dwellir.com/YOUR_API_KEY",
    ss58_format=5,
    type_registry_preset="substrate-node-template"
)
print(substrate.properties)

JavaScript

const api = await ApiPromise.create({ provider: new WsProvider('wss://api-astar.n.dwellir.com/YOUR_API_KEY') });
const properties = await api.rpc.system.properties();
console.log(properties.toHuman());