Cross-Chain Snapshot Aggregator and Publisher

WHAT IT DOES

Cross-Chain Snapshot Aggregator and Publisher is an analytics-focused tool that enables comprehensive snapshot collection across EVM-compatible blockchain networks. Unlike single-chain explorers or basic balance checkers, this tool aggregates snapshot data from multiple chains, capturing block numbers, timestamps, token balances, voting power snapshots, governance proposal states, and delegate information. The tool supports Ethereum, Polygon, Arbitrum, Optimism, Avalanche, BNB Chain, and Base, providing a unified view of on-chain state at specific points in time. This is essential for governance participants, DAO analysts, developers, and researchers who need to compare state across chains, verify voting power at proposal snapshots, or publish aggregated data for governance decisions.

HOW TO USE

Connect your wallet using WalletConnect or a compatible browser extension. Ensure your wallet is on the chain you want to snapshot. Select the target chain from the dropdown menu. Enter the snapshot contract address—this can be a governance token contract, a voting power contract, or any contract that implements balanceOf or getVotes. Enter the address you want to snapshot (or a proposal ID for governance proposals). Optionally, specify a block number to take the snapshot at a historical block; leave blank to use the latest block. Click "Take snapshot" to read the data from the chain at the specified block. The tool displays the chain, block number, timestamp, target address, balance or voting power, and additional data such as proposal details or contract state. If the target is a governance proposal, the tool shows the proposer, start block, end block, vote counts, and current state (pending, active, passed, etc.). Click "Publish snapshot" to output the snapshot data—this is a read-only operation that displays the aggregated data for review or sharing.

ADAPTIVE MULTI-CHAIN SNAPSHOT RESOLUTION ENGINE

The core technical mechanism that distinguishes this tool is its adaptive multi-chain snapshot resolution engine. Unlike simple balance readers that assume a single contract interface, this tool implements a multi-strategy resolver that adapts to different snapshot contracts across chains. The engine first attempts to read balanceOf() for token balance snapshots. If that fails, it tries getVotes() for governance voting power snapshots. For governance proposals, it detects the target as a proposal ID and attempts to read getProposal() for full proposal details and state() for the current status. The engine also handles historical block snapshots by using the blockTag parameter in eth_call, allowing users to capture state at any block height. The timestamp resolution automatically converts block numbers to human-readable timestamps using the provider's getBlock() method. For aggregated multi-chain snapshots, the tool collects data from each chain sequentially, preserving the block number and timestamp for each snapshot. All RPC calls are wrapped with timeout and retry logic, and the tool automatically falls back to a secondary provider if the primary endpoint fails or rate-limits, ensuring snapshot collection completes even during network congestion.

WHAT IT CANNOT SEE

The tool cannot guarantee that snapshots from different chains are taken at exactly the same block height, or that the aggregated data reflects real-time state changes that occur between snapshot collection and display. It has no visibility into off-chain state, pending transactions, or mempool activity that may affect the snapshot data. The tool cannot predict future state changes, nor can it detect governance outcomes before they occur. It does not monitor state changes over time—it is a snapshot tool, not a continuous monitoring service. The tool cannot interact with non-EVM chains, private networks, or snapshot contracts that do not implement the standard interfaces it expects. It also cannot recover funds or alter state—it is read-only by design.

PLEASE NOTE

This tool is designed exclusively for EVM-compatible blockchain networks. It supports Ethereum, Polygon, Arbitrum, Optimism, Avalanche, BNB Chain, Base, and similar chains. Non-EVM networks such as Solana, Cosmos, or Bitcoin are not supported. Always verify the snapshot contract address and block number before relying on the data—the tool does not validate contract safety or data accuracy beyond basic verification. The tool provides snapshots at the time of collection—data may change between calls. Users are responsible for understanding the implications of snapshot data for governance and decision-making.