Wallet Label / Identity Lookup

Given an EVM address, returns whatever public identifiers exist: ENS reverse name, Etherscan public nametag (CEX deposit / MEV bot / DAO multisig / etc), contract verification + name, first-tx timestamp / account age, native balance. Pre-send safety check. $0.01 per address.

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Why this exists

Before you send funds to an unknown address, you want to answer: "is this address actually who they say they are?"

The biggest free identity sources are:

• ENS (vitalik.eth, etc) — primary name reverse-resolution
• Etherscan public name tags — Binance Hot Wallet 3, Aave V3 Pool, Tornado Cash, etc

There is no consolidated free API for these. This actor scrapes the Etherscan address page (fair-use, light, public HTML) and combines with on-chain calls to return everything in one row.

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What you get per row

Field	Example	Notes
address	0xd8dA...96045	input
chain	ethereum
primary_label	vitalik.eth	top Etherscan label
entity_type_guess	individual_ens	heuristic
ens_primary	vitalik.eth	primary ENS name
labels	["vitalik.eth", "Vitalik Buterin"]	all Etherscan hash-tag labels
is_contract	false	contract vs EOA
contract_name	null	if contract, verified name
first_tx_date	2017-07-23T16:39:00+00:00	from on-chain
account_age_days	3234	derived
native_balance	4.21	in ETH/BNB/MATIC/etc
etherscan_url	https://etherscan.io/address/0x...	quick link

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entity_type_guess categories (heuristic)

Category	Trigger keywords in label
centralized_exchange	binance, coinbase, kraken, okx, huobi, kucoin, bybit, gate, bitfinex
defi_protocol	aave, compound, maker, uniswap, sushi, curve, balancer, gmx, dydx
dao_treasury_or_multisig	multisig, safe, dao
bot	mev, bot
project_team	deployer, team
malicious	hack, exploit, drainer, scam, phish
individual_ens	contains .eth

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Quick start

Look up Vitalik

{
  "address": "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045",
  "chain": "ethereum"
}

Look up a Binance hot wallet (find their typical inflows)

{
  "address": "0xF977814e90dA44bFA03b6295A0616a897441aceC",
  "chain": "ethereum"
}

Look up a Base address

{
  "address": "0x...",
  "chain": "base"
}

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Supported chains

ethereum, bsc, polygon, arbitrum, optimism, base, avalanche, fantom.

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Pricing

Pay-Per-Event: $0.01 per address labeled.

Run	Addresses	Cost
Single lookup	1	$0.01
Bulk script (1000 addresses)	1000	$10.00

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Use cases

1. Pre-send check — Don't send your life savings to a phishing address that mimics a CEX
2. Whale identification — Top wallet in your token's holder list — is that Binance cold or a real whale?
3. Compliance triage — Combine with Sanctions Checker for a full risk profile
4. DEX trader profiling — Is the wallet swapping against you a MEV bot or a normal user?
5. Block explorer enrichment — Augment your own analytics with public labels

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Limitations

• Scrapes Etherscan HTML. If Etherscan changes their markup, parsing may temporarily break — please open a GitHub issue and we'll patch.
• Labels are best-effort. Etherscan's public nametags are crowdsourced and audited but not exhaustive. Many wallets have no label.
• Heuristic entity classification. entity_type_guess is a rule-of-thumb derived from the label string, not a verified attestation.

For production-grade entity tagging (full Nansen labels), use Nansen API ($150+/mo).

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Related actors (same author)

• Crypto Address Sanctions Checker — Pair with this for full address vetting
• Wallet PnL Analyzer — Full token portfolio
• DeFi Liquidation Risk Checker
• Smart Money Wallet Tracker

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