eth_getStorageAt

Returns the value from a storage position at a given address.

Parameters

DATA, 20 Bytes - Address of the storage.

QUANTITY - Hexadecimal of the position in the storage.

QUANTITY|TAG - Hexadecimal block number, or the string "latest", "earliest", "safe", "finalized", see the default block parameter

Returns

DATA - The value at this storage position.

Example

In this case we consider the deployed eAUD token at address 0x4392743B97C46c6Aa186A7f3D0468fbF177ee70F . From the token's documentation, we see the 'DECIMALS_SLOT' is at address 0x86386409a65c1a7f963bc51852fa7ecbdb9cad2cec464de22ee4591e1622b46b. Getting the storage at this address should give us the decimal value of the token.

Request

curl https://rpc.adiri.tel \
 -X POST \
 -H "Content-Type: application/json" \
 --data '{"jsonrpc":"2.0", "method": "eth_getStorageAt", "params": [
        "0x4392743B97C46c6Aa186A7f3D0468fbF177ee70F", 
        "0x86386409a65c1a7f963bc51852fa7ecbdb9cad2cec464de22ee4591e1622b46b", 
        "latest"], "id": 1}'

Result

{
  "jsonrpc": "2.0",
  "result": "0x0000000000000000000000000000000000000000000000000000000000000006", //6
  "id": 1
}

source