eth_getproof

Cronos RPC

How to use it

// yarn add @tatumio/tatum

import { TatumSDK, Cronos, Network } from '@tatumio/tatum'

const tatum = await TatumSDK.init<Cronos>({ network: Network.CRONOS })

const result = await tatum.rpc.getProof(
  '0x523D6F30C4aaca133DAAD97eE2A0C48235bfF137',
  ['0x0000000000000000000000000000000000000000000000000000000000000000'],
  'latest',
)

await tatum.destroy() // Destroy Tatum SDK - needed for stopping background jobs

Overview

The eth_getProof is an JSON-RPC method that retrieves the Merkle-Patricia proof for an account, storage key-value pairs, and account transaction count. It allows developers to verify the state of an account or storage value at a specific block without needing the entire state trie. This method is particularly useful for light clients or off-chain applications that require proof of an account's state or specific storage values.

Parameters

  1. address - Data, 20 Bytes
    • The address of the account.
    • Example: "0x523D6F30C4aaca133DAAD97eE2A0C48235bfF137"
  2. keys - Array of Data
    • An array of storage keys for which the proof should be generated.
    • Example: ["0x0000000000000000000000000000000000000000000000000000000000000000"]
  3. blockNumber - Quantity or String
    • The block number for which the proof should be generated.
    • Example: "0x1" or "latest"

Return Object

The method returns an object containing the following fields:

  1. accountProof - Array of Data
    • The serialized Merkle-Patricia proof for the account.
  2. balance - Quantity
    • The balance of the account at the specified block.
  3. codeHash - Data, 32 Bytes
    • The hash of the code for the account at the specified block.
  4. nonce - Quantity
    • The transaction count of the account at the specified block.
  5. storageProof - Array of Object
    • An array of storage proof objects, one for each requested key, containing the following fields:
      • key - Data, 32 Bytes: The storage key.
      • value - Quantity: The storage value.
      • proof - Array of Data: The serialized Merkle-Patricia proof for the key-value pair.