CEX Exchange Reserve Tracker

Query on-chain wallet balances for Binance, Coinbase, Kraken, Bitfinex, OKX, and Bybit cold/hot wallets across ETH, USDT, USDC, WBTC, and DAI. Reserve trends are the single most-watched macro signal in crypto. No API key required.

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What It Does

Exchange reserves are aggregate balances of well-known CEX cold wallets. Watching them is how funds, market makers, and serious analysts read macro flow:

• Falling reserves + growing stablecoin reserves = capital ready to deploy = bullish
• Rising ETH/BTC reserves = inventory build for distribution = bearish
• Stablecoin reserve growth = sidelined buyers entering = bullish

This Actor returns the current balance per wallet × asset with USD valuation, plus per-exchange and per-asset totals. Schedule it to build your own time-series.

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Why This Matters

CEX reserve data has historically called major tops and bottoms (notably FTX-induced reserve drops, post-Luna inflows, 2024 ETF launch deposits). Live reserve snapshots are what institutional desks pay $5K+/month for from CryptoQuant. This Actor delivers a useful slice for fractions of a cent.

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Input

Field	Type	Default	Description
exchanges	array	all	Subset of Binance, Coinbase, Kraken, Bitfinex, OKX, Bybit
assets	array	all	Subset of ETH, USDT, USDC, WBTC, DAI
minBalanceUsd	integer	1000000	Skip wallets with < $X for an asset
sortBy	string	balance_usd_desc	balance_usd_desc, exchange_asset, asset_only
limit	integer	200	Max rows

Example: Binance + Coinbase USDT only

{"exchanges": ["Binance", "Coinbase"], "assets": ["USDT"]}

Example: All-asset snapshot for daily ETL

{"sortBy": "exchange_asset", "minBalanceUsd": 0, "limit": 500}

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Output

{
  "exchange": "Binance",
  "asset": "USDT",
  "wallet_label": "Binance 8 (Cold)",
  "wallet_address": "0xf977814e90da44bfa03b6295a0616a897441acec",
  "balance_native": 19967378227.0,
  "balance_usd": 19967378227.00,
  "price_used_usd": 1.0
}

Plus a SUMMARY key-value record with totals by exchange and asset.

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Pricing

• $0.001 per (wallet × asset) row returned

Examples:

• Full snapshot (~6 exchanges × 3 wallets × 5 assets ≈ 90 rows): **$0.09**
• Single exchange focus (~5 rows): $0.005

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Use Cases

Daily reserve report — Schedule daily, compare against prior day's stored snapshot, alert on > 5% delta.

Stablecoin inflow signal — Filter asset: "USDT" + sortBy: "exchange_asset", watch totals daily. Sustained Tether inflow = sidelined buying power.

Coinbase ETH outflow tracker — Coinbase's ETH balance trends correlate with custody-into-staking flows (which precede price moves).

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Limitations

• Only Ethereum L1 wallets are scanned. Doesn't cover BSC, Solana, Tron, or BTC native chain.
• The wallet list is curated public knowledge, not exhaustive. Some exchange reserves live in wallets not in the public domain.
• Snapshot only — no historical time-series. Run on a schedule and compare runs to derive trends.

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Data Sources

• Etherscan V2 API (module=account&action=balance / tokenbalance) — shared API key bundled
• Coingecko for USD pricing

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Related Actors

• Stablecoin Depeg Monitor — Pairs nicely with stablecoin reserve trend.
• Crypto ETF Flow Tracker — ETF inflows + CEX reserve drops = high-confidence rally signal.
• Smart Money Wallet Tracker — On-chain whale activity complement.

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🎬 Live Sample Run

A real run of this actor with default-ish inputs, executed on 2026-06-10:

Field	Value
Items in dataset	6
Dataset (JSON)	https://api.apify.com/v2/datasets/OWU4mBUMugpxfTDCI/items?clean=1&format=json
Dataset (CSV)	https://api.apify.com/v2/datasets/OWU4mBUMugpxfTDCI/items?clean=1&format=csv
Run summary (KVS)	https://api.apify.com/v2/key-value-stores/JDcBEth0cwsnvXs2M/records/SUMMARY
Run details	https://api.apify.com/v2/actor-runs/axMZBMPfmQ35J6Tp3

Try it now: pop any of the dataset URLs in your browser to see live output, or hit the API endpoints from your code.

Want to reproduce? Click Try Actor on the Apify Store page and use the input defaults shown above.

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