eth_getProof on Cronos

Measured 2026-10-11 by our weekly probe, which calls eth_getProof through the same Cronos endpoint customers use.

What eth_getProof does

Returns an EIP-1186 Merkle proof for an account and selected storage slots, which a client can verify against the block's state root without trusting the RPC provider.

eth_getProof on Cronos: what we measured

• Default Cronos routing keeps state for roughly the last 1,000,000 blocks (about 4.8 days of Cronos history). A proof for a block older than that needs historical state. Add &archive=1 to send the request to archive upstreams (paid plans).

Example request

curl -s https://rpc.swiftnodes.io/rpc/cronos?key=YOUR_API_KEY \
  -X POST -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_getProof","params":["0x0000000000000000000000000000000000000000",[],"latest"]}'

import { createPublicClient, http } from "viem";

const client = createPublicClient({ transport: http("https://rpc.swiftnodes.io/rpc/cronos?key=YOUR_API_KEY") });

// Any JSON-RPC method, typed loosely: eth_getProof on Cronos
const result = await client.request({
  method: "eth_getProof",
  params: ["0x0000000000000000000000000000000000000000",[],"latest"],
});

Other methods on Cronos

• eth_blockNumberSupported
• eth_chainIdSupported
• eth_getBalanceSupported
• eth_getBlockByNumberSupported
• eth_getTransactionByHashSupported
• eth_getTransactionReceiptSupported
• eth_callSupported
• eth_estimateGasSupported
• eth_gasPriceSupported
• eth_maxPriorityFeePerGasSupported
• eth_sendRawTransactionSupported
• eth_getTransactionCountSupported
• eth_getCodeSupported
• eth_subscribeSupported
• eth_getLogsSupported
• eth_getBlockReceiptsSupported
• eth_feeHistorySupported
• eth_createAccessListSupported
• debug_traceCallSupported
• trace_blockNot available
• trace_transactionNot measured

eth_getProof on other chains

Support differs by chain; the full measured table is on the eth_getProof reference.

• Ethereum
• Base
• Arbitrum
• Optimism
• Polygon
• BNB Smart Chain
• Avalanche
• Sonic
• Linea
• Scroll
• zkSync Era
• Blast
• Mantle
• Gnosis
• Celo
• Berachain
• Monad
• Unichain
• Kaia
• PulseChain
• World Chain
• Ronin
• Abstract
• ApeChain
• MegaETH
• Fantom
• Lisk
• Hemi
• X Layer
• BOB
• Plasma
• Fraxtal
• Zora
• Story
• Soneium
• Sei
• Hyperliquid
• Taiko
• Morph
• Ink
• Katana
• Ethereum Classic
• opBNB
• Mode
• Flare
• Core
• Chiliz
• Telos EVM
• Tempo
• Manta Pacific
• Shibarium
• Boba Network
• Arbitrum Nova
• Immutable zkEVM

Frequently asked questions