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Onchain Wallet Holder Enrichment Scraper

LEAD GENERATIONDEVELOPER TOOLS
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Onchain Wallet Holder Enrichment Scraper

Enrich a list of crypto wallet addresses with on-chain data across 7+ EVM chains and Solana. For each address you get native token balance, ERC-20 holdings, transaction history, ENS name, risk flags (OFAC sanctions list / Tornado Cash interactions), and social handles — all in a single structured output row per wallet per chain.

Use Cases

  • Crypto VC due diligence — profile LP wallet histories, concentration risk, and counterparty networks before a deal
  • Sales prospecting — identify whale wallets for custody and B2B crypto services
  • Compliance screening — flag OFAC-sanctioned or Tornado Cash-linked addresses before onboarding
  • Airdrop targeting — find addresses that meet eligibility criteria (balance thresholds, protocol interactions)
  • NFT / DeFi analytics — aggregate holder enrichment for a contract's top holders

What You Get

Field Description
address Wallet address (checksummed EVM or Solana base58)
chain Chain queried (ethereum, bsc, polygon, arbitrum, base, avalanche, solana)
native_balance Native token balance in whole units (ETH, BNB, MATIC, etc.)
native_balance_usd Approximate USD value using live CoinGecko pricing
erc20_holdings JSON array of ERC-20 token positions: symbol, address, balance
first_tx_date Date of first transaction on this chain
last_tx_date Date of most recent transaction
tx_count Total transactions sampled (up to 200 per run)
unique_counterparties Number of unique addresses interacted with
total_gas_spent_usd Estimated total gas fees paid in USD
labels Auto-applied labels: whale, sanctioned
ens_name ENS reverse-resolved name (Ethereum only)
farcaster_handle Farcaster username if registered for this address
risk_flags OFAC-sanctioned or tornado-cash-interaction flags
enriched_at ISO 8601 timestamp when the record was produced

Input

Required

Field Description
walletAddresses One or more EVM (0x…) or Solana addresses to enrich
chains EVM chains to query per address: ethereum, bsc, polygon, arbitrum, base, avalanche

Optional

Field Default Description
etherscanApiKey — Your Etherscan API key (5 req/s with key vs. 1 req/s without)
bscscanApiKey — BscScan API key for BSC enrichment
polygonscanApiKey — Polygonscan API key for Polygon enrichment
includeErc20 true Fetch ERC-20 token balances
includeNfts false Fetch NFT holdings (ERC-721/1155)
resolveEns true Reverse-resolve ENS name (Ethereum only)
checkRiskFlags true Check OFAC sanctions and Tornado Cash interactions
maxItems 0 (unlimited) Cap on output records

Rate Limits and API Keys

Without API keys the actor runs at the Etherscan free-tier rate (~1 request/second per endpoint). For high-volume enrichment (1,000+ wallets), supply your own explorer API keys — all are free to register.

To get a free Etherscan API key: register at etherscan.io/register, then generate a key at etherscan.io/myapikey.

Multi-Chain Output

Each walletAddresses × chains combination produces a separate output row. Enriching 2 addresses across 3 chains yields 6 rows. Solana-format addresses are enriched on Solana automatically.

Example Input

{
  "walletAddresses": [
    "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
  ],
  "chains": ["ethereum"],
  "includeErc20": true,
  "resolveEns": true,
  "checkRiskFlags": true
}

Example Output

{
  "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
  "chain": "ethereum",
  "native_balance": 1250.34,
  "native_balance_usd": 4187638.20,
  "erc20_holdings": "[{\"symbol\":\"USDC\",\"address\":\"0xa0b86991...\",\"balance\":50000}]",
  "first_tx_date": "2021-01-10",
  "last_tx_date": "2026-05-15",
  "tx_count": 200,
  "unique_counterparties": 87,
  "total_gas_spent_usd": 4312.55,
  "labels": "[\"whale\"]",
  "ens_name": "vbuterin.stateofus.eth",
  "farcaster_handle": null,
  "risk_flags": null,
  "enriched_at": "2026-05-27T10:00:00.000Z"
}

Notes

  • ERC-20 balances are derived from raw token transfer events. Very active wallets may show approximate values if activity exceeds the 200-transfer sample window.
  • USD values use CoinGecko pricing fetched at run start.
  • Tornado Cash and OFAC flag checks use publicly available on-chain data only.
  • The airdrop_eligibility, defi_positions, nft_trading_stats, and dao_memberships fields are reserved for future enrichment modules and return null in the current version.
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