Who first funded this wallet?

One call returns the first coin and the first priced token a wallet received, each with the sender, the sender's label, the time and the amount.

GET /v1/onchain/wallets/{address}/first-funder answers it in one call, as two answers: first_native_in, the first plain send of the chain's coin, and first_token_in, the first token transfer worth at least $1. Each names the sender (from) with its label and wallet_type. The full parameter list is on Wallet first funder.

Quick answer

Put any 0x address in the path. chain defaults to ethereum.

cURL

# the first coin and the first priced token the wallet received, each with its sender's label
curl -H "X-API-Key: $VIKE_API_KEY" \
  "https://data.vike.io/v1/onchain/wallets/0x556e9d5d9e64638edde632bbd4810c9fd0d88397/first-funder"

Example response

Captured from the live API on 2026-10-24 at 16:57 UTC. The wallet's first ETH, 100.05 of it, came from a Binance-labelled wallet in December 2023; its first priced token, 100 USDT, came from another Binance-labelled wallet two years later. The coverage block is trimmed to two of its six keys.

Example response

{
  "address": "0x556e9d5d9e64638edde632bbd4810c9fd0d88397",
  "chain": "ethereum",
  "found": true,
  "first_native_in": {
    "from": "0x28c6c06298d514db089934071355e5743bf21d60",
    "label": "binance",
    "wallet_type": "cex",
    "label_confidence": "medium",
    "time": "2023-12-22T02:55:35Z",
    "tx_hash": "0x8b24afff9fc8195e19dba0726a77cebc73c182211059c9d0ed1b024e630ab1e6",
    "block": 18838548,
    "amount": 100.0468,
    "amount_symbol": "ETH",
    "amount_wei": "100046800000000000000",
    "amount_usd": 224241.896116
  },
  "first_token_in": {
    "from": "0x9696f59e4d72e237be84ffd425dcad154bf96976",
    "label": "binance",
    "wallet_type": "cex",
    "label_confidence": "medium",
    "time": "2025-12-25T12:28:11Z",
    "tx_hash": "0xb6c5bdd7d6e58b163d1c0494e7ca37ed08c37c6216fd09a4bc39aa88cc8f9511",
    "block": 24089637,
    "token_address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
    "symbol": "USDT",
    "amount": 100.0,
    "amount_usd": 100.0
  },
  "coverage": {
    "history_from": "2015-08-07",
    "note": "The earliest qualifying inbound transfer we hold. It is not proof of who funded the wallet: a funder can use a contract, a bridge or an exchange withdrawal, or send below the floor."
  }
}

Variations

On another chain. chain takes ethereum, bsc, base or hyperevm. Each chain's history starts on its own date: on base, a capture on 2026-10-24 reported coverage.history_from as 2023-06-15.

cURL — on Base

# the same question on Base
curl -H "X-API-Key: $VIKE_API_KEY" \
  "https://data.vike.io/v1/onchain/wallets/0x2b1e8e051d85a65306910aef136d2aebf2eaccc5/first-funder?chain=base"

The very first inbound coin, dust included. By default a native send under 0.0001 coin is skipped, so a probing dust transfer is not reported as the funder. min_native=0 removes that floor.

cURL — no dust floor

# the very first inbound coin, whatever its size
curl -H "X-API-Key: $VIKE_API_KEY" \
  "https://data.vike.io/v1/onchain/wallets/0x556e9d5d9e64638edde632bbd4810c9fd0d88397/first-funder?min_native=0"

Only sizeable funding. Raise both floors to skip small transfers: at least 0.5 ETH, and tokens worth at least $1,000.

cURL — sizeable funding only

# only a first coin of at least 0.5 ETH and a first token worth at least $1000
curl -H "X-API-Key: $VIKE_API_KEY" \
  "https://data.vike.io/v1/onchain/wallets/0x556e9d5d9e64638edde632bbd4810c9fd0d88397/first-funder?min_native=0.5&min_usd=1000"

Before you rely on it

The first transfer on record, not proof of who funded the wallet

Coin rows hold plain sends only. Coin moved by a contract call, a bridge relay or a batch payout is not in them, so the real first funding can be earlier than first_native_in. The sender can be an exchange or a relay rather than a person. Every response says this again in coverage.note.

Two answers, either of which can be missing

first_native_in and first_token_in are separate searches, and either can be null. A wallet with no inbound transfer above the floors comes back with found: false and both sides null, not zeros.

History starts on a different date per chain

coverage.history_from is the oldest transfer date held for the chain you asked. A wallet older than that shows a later first transfer than it really had.

Floors hide dust and unpriced tokens

min_native defaults to 0.0001 coin and min_usd to $1, so spam airdrops and tokens with no USD price are skipped. amount_usd is null where no price is held, never 0. Pass min_usd=0 to include unpriced tokens.

A very busy wallet can answer 400

Each side of the search has a time budget. A wallet too active to resolve in it gets a 400 whose message names the fix: retry, or pass min_native=0 and min_usd=0 to take the very first inbound transfer.

HyperEVM senders

On hyperevm, protocol system addresses appear as senders and come back with wallet_type system and no entity name, and labels there are sparse.

Ask your agent

Connected to the Vike MCP server (https://vike.io/mcp) in Claude, ChatGPT or Cursor, ask it in plain words. The wallet_first_funder tool answers, at 2 credits a call.

Ask your agent

Who first funded 0x556e9d5d9e64638edde632bbd4810c9fd0d88397 on Ethereum, and is the sender an exchange?

Who first funded this wallet?

Quick answer

Example response

Variations

Before you rely on it

Ask your agent

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