Operator 0x52E2…f3ea

Next transaction nonce for any Ethereum wallet via eth_getTransactionCount - how many txs it has sent

Detect upgradeable proxy patterns (EIP-1967, UUPS, Transparent) via eth_getStorageAt - returns the implementation address behind a proxy

Contract introspection via eth_call - name, symbol, decimals, and ERC20/721/1155 interface support

Fetch an Ethereum block header and transaction hashes by number, tag, or hex via eth_getBlockByNumber

Check if an Ethereum address is a contract via eth_getCode - returns deployed bytecode

ENS resolve - turn a .eth name into an address, or an address into its primary .eth name, via eth_call on OneSource live Ethereum RPC

Transaction receipt via eth_getTransactionReceipt - status, gas, and event logs for a mined Ethereum transaction

Full Ethereum transaction details by hash via eth_getTransactionByHash - from, to, value, calldata, block

Look up the current owner of an ERC721 NFT by token_id via ownerOf (eth_call)

Estimate the gas a transaction will consume via eth_estimateGas before signing it

Simulate a read-only Ethereum contract call via eth_call - no transaction sent

NFT metadata, traits, and image URI for any ERC721 or ERC1155 token - fetched via eth_call with IPFS resolution (OneSource live Ethereum RPC)

ERC20 Transfer logs via eth_getLogs - decoded sender, recipient, and amount for a token or wallet

List every ERC721 NFT token_id a wallet owns in a collection via tokenOfOwnerByIndex (eth_call)

ERC20 allowance via allowance (eth_call) - how much a spender is approved to move from an owner's wallet

Pending Ethereum block - mempool transactions not yet mined, via eth_getBlockByNumber("pending")

ERC20 token balance for any Ethereum wallet - USDC, USDT, DAI, or any token - via balanceOf (eth_call) on OneSource live Ethereum RPC

Read a raw storage slot from any Ethereum contract via eth_getStorageAt

ERC1155 token balance via balanceOf (eth_call) - how many copies of a token_id a wallet holds

Live wallet balance - native ETH plus any ERC20 tokens in one call via eth_getBalance and balanceOf on OneSource Ethereum RPC

Query Ethereum contract event logs via eth_getLogs - filter by contract, topic, and block range

Total supply of an ERC20 or ERC721 token contract via totalSupply (eth_call)

Ethereum network info - chain ID, block height, and gas price in one batched RPC call (eth_chainId + eth_blockNumber + eth_gasPrice)

Ethereum chain ID (EIP-155) via eth_chainId - confirm which chain a network is on

Latest Ethereum block height - current chain tip via eth_blockNumber