Contract ownership check for 16 EVM chains: owner, whether it is a wallet or contract, renounced, pending owner and whether the contract is paused.

Reverse a 4-byte function selector or 32-byte event topic into its signature from a built-in list of 120 common token, NFT, DEX and lending signatures.

Function selector and event topic hash from a signature such as Transfer(address,address,uint256): 4-byte id and 32-byte keccak256, computed locally.

Proxy contract resolver for 16 EVM chains: EIP-1967, EIP-1822, EIP-1167 clone and legacy OpenZeppelin patterns, implementation, admin and beacon address.

Pending versus confirmed nonce for an address on 16 EVM chains: the next nonce to use and how many of its transactions are waiting in the mempool.

Algorand network status: latest round, minimum fee, per-byte fee, consensus version, genesis id and the time since the last round.

Aptos coin metadata by coin type such as 0x1::aptos_coin::AptosCoin: name, symbol, decimals and total supply where the chain tracks it.

ERC-4626 vault reader for 16 EVM chains: underlying asset, total assets, share supply and the current share price in asset units.

Verify an Ethereum personal_sign message: recover the signer from a 65-byte signature and check it against an address. Computed locally, no node needed.

Verify a smart contract wallet signature (ERC-1271) on 16 EVM chains for Safe, account abstraction and other multisig wallets via isValidSignature.

Uniswap V2-style pair reader for 16 EVM chains: both tokens with symbols, reserves, implied spot price both ways, LP supply and last update.

Uniswap V3-style pool state for 16 EVM chains: spot price from slot0, current tick, in-range liquidity, fee tier and both token symbols.

ERC-20 balances of one token for up to 20 wallets on 16 EVM chains, with each wallet's share of supply and the combined balance.

Algorand asset info by id: name, unit, decimals, exact total supply, creator and manager, and whether freeze or clawback controls exist.

Wallet snapshot in one call on 16 EVM chains: native balance, transaction count, account kind and balances of the major ERC-20 tokens or tokens you list.

Uniswap V3 position by NFT id on 5 chains: owner, pool, price range, whether it is in range, token amounts, fee tier and uncollected fees.

Cosmos Hub network status: latest block and age, bonded and unbonded ATOM, staking ratio and inflation rate from the public REST API.

NEAR network status: latest block and age, epoch start, protocol version, gas price in yoctoNEAR and per teragas, and active validator count.

Cosmos Hub governance proposals by status: title, summary, voting window, deposit and the yes, no, abstain and veto tally on votes cast.

Daylight saving changes for any IANA time zone and year - exact UTC moment, offset before and after, direction, local time and the next transition