Avalanche Transaction Tracker

WHAT IT DOES

Avalanche Transaction Tracker is a read-only blockchain analytics tool built specifically for the Avalanche C-Chain ecosystem. It provides comprehensive visibility into C-Chain on-chain activity including native AVAX transactions, ERC-20 token transfers, ERC-721 NFT transfers, contract interactions, wallet balances, and detailed transaction receipts. The tool retrieves full transaction details with gas costs calculated using effectiveGasPrice (not the pre-EIP-1559 gasPrice cap), and automatically detects and displays token transfers from transaction logs. It shows C-Chain-specific data such as gas usage and effective pricing, giving users a complete picture of their Avalanche C-Chain activity.

HOW TO USE

Select the desired Avalanche network (C-Chain Mainnet or Fuji Testnet) from the dropdown menu. Enter a transaction hash to view complete C-Chain transaction details including status, gas usage, effective gas price, total cost, and any token transfers embedded in the logs. Enter a wallet address to view its AVAX balance and a summary of recent ERC-20 and ERC-721 transfers organized by token contract. Enter a token contract address to view its transfer history—the tool will automatically detect it as an address lookup and show transfers involving that contract. Each result includes direct links to Snowtrace for deeper investigation.

TECHNICAL MECHANISM

The tool uses ethers.js v5.7.2 to connect to Avalanche via either the connected wallet's provider or a public RPC endpoint (api.avax.network/ext/bc/C/rpc for mainnet, api.avax-test.network/ext/bc/C/rpc for testnet). For transaction lookups, it fetches the transaction, receipt, and block data, then parses logs to extract token transfers using the standard ERC-20/ERC-721 Transfer event signature (0xddf252ad...). For address lookups, it retrieves the native AVAX balance and then uses chunked log scanning with automatic backoff to fetch token transfer events involving the address. The log scanner starts with 2000-block chunks and halves the chunk size on RPC rejection, ensuring public RPC limits are respected. Gas costs are calculated using receipt.effectiveGasPrice, which accurately reflects actual spend post-London upgrade.

WHAT IT CANNOT SEE

This tool cannot track cross-chain Avalanche transfers beyond the C-Chain—once funds bridge to the P-Chain, X-Chain, or other chains, they are outside its scope. It cannot verify off-chain transaction status or detect transactions that have not yet been broadcast to the network. It is limited to Avalanche C-Chain data only and cannot detect tokens that do not follow the standard ERC-20/ERC-721 event interfaces (e.g., tokens using non-standard transfer signatures, or proxy patterns with different event emitters). It also cannot see P-Chain (staking/validator) or X-Chain (asset exchange) activity, as those are non-EVM chains.

PLEASE NOTE

This tool is EVM only and specifically designed for Avalanche C-Chain (mainnet and Fuji testnet). No other chains are supported. All data is read-only—no transactions are signed or sent.