POST
https://optimism-mainnet.core.chainstack.com
/
efb0a5eccd2caa5135eb54eba6f7f300
curl --request POST \
  --url https://optimism-mainnet.core.chainstack.com/efb0a5eccd2caa5135eb54eba6f7f300 \
  --header 'Content-Type: application/json' \
  --data '{
  "jsonrpc": "2.0",
  "method": "eth_getProof",
  "id": 1,
  "params": [
    "0x548Da0F6b0AFD0094F735503D44e79a3769980Fd",
    [
      "0xf6e506a9cbe7546a796b187c40609a170ea8073e047129a3cae1c38e6d7559b7"
    ],
    "latest"
  ]
}'
{
  "jsonrpc": "<string>",
  "id": 123,
  "result": {
    "accountProof": [
      "<string>"
    ],
    "balance": "<string>",
    "codeHash": "<string>",
    "nonce": "<string>",
    "storageHash": "<string>",
    "storageProof": [
      {
        "key": "<string>",
        "value": "<string>",
        "proof": [
          "<string>"
        ]
      }
    ]
  }
}

Optimism API method eth_getProof retrieves the account and storage values of the specified account, including the Merkle-proof. This method is used to verify the data without needing the entire state on the client side.

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​
Parameters

  • address — the address of the account.
  • storageKeys — an array of storage keys to prove.
  • block — the block number (in hexadecimal) or one of the strings "earliest", "latest", or "pending", indicating the state to consider. The default is "latest".

​
Response

  • result — an object containing the account proof, balance, code hash, nonce, storage hash, and storage proof for each requested storage key.

​
Use case

The eth_getProof method is essential for:

  • Applications that need to verify account or contract state without syncing the entire blockchain.
  • Services that provide cryptographic proofs of specific data to third parties.
  • Tools that audit the state of accounts or contracts at specific block heights.

Body

application/json

Response

200 - application/json

Account and storage values of the specified account including the Merkle-proof

The response is of type object.