Bitcoin whale wallet tracker.
How BTC supply is split across address cohorts, the largest publicly-known wallets with live balances, and an instant on-chain lookup for any Bitcoin address. Data from mempool.space — free, no signup.
Wallet-size distribution
Snapshot · 2026-05How the ~19.7M BTC currently in circulation is split across on-chain cohorts. One address is not one person — exchanges, ETF custodians and brokerages occupy single mega-addresses that represent thousands of customers.
Address lookup
Live · mempool.spacePaste any Bitcoin address — legacy (1…), P2SH (3…) or bech32 (bc1…) — and read the live balance, transaction count and lifetime received/sent. Queries run in your browser; nothing is logged.
Top public whale wallets
Live balancesA curated list of publicly-known whale addresses — exchange cold wallets, government seizures, ETF custodian addresses and well-documented anonymous early holders. Balances update on every page load from mempool.space.
| # | Holder / label | Balance |
|---|
About these labels. Exchange and institutional cold-wallet attributions come from public blockchain-forensics work (BitInfoCharts, Arkham, OXT, news reporting). They are widely accepted but not officially confirmed by the entities. Treat them as "reported as" rather than "verified by." Government-seizure addresses are confirmed via court documents. Anonymous addresses with no attributed owner are labelled simply as "Anon early holder."
FAQ
Whale data explainedWhat counts as a Bitcoin whale?
On-chain analysts use size cohorts rather than a single threshold. Most common scheme: shrimp (< 1 BTC), crab (1–10), octopus (10–100), fish (100–1,000), shark (1,000–5,000), whale (5,000–10,000) and humpback (> 10,000). "Whale" in news headlines usually refers to anyone holding more than 1,000 BTC.
Where does the distribution data come from?
The cohort snapshot is curated from public on-chain analytics aggregators (BitInfoCharts, IntoTheBlock, Glassnode) and refreshed periodically — the date is stamped at the top of the section. Live balances for the top list and the address lookup come directly from mempool.space's public API on every page load.
How do the per-cohort trends work?
Each cohort tile shows the change in that cohort's share of total BTC supply over the lookback window selected at the top of the section (7D / 30D / 90D / 1Y). The value is a relative change, not percentage points — e.g. "Humpback +2.4% (30D)" means the humpback slice is now 2.4% larger relative to its size 30 days ago. Up-arrows are accumulation against the rest of the market; down-arrows are distribution. The selector switches every cohort tile at once. Trend values come from the same curated snapshot as the cohort sizes and are refreshed together.
Are the wallet labels authoritative?
No. Labels reflect best-effort public attribution from blockchain explorers and news reporting — widely accepted but not officially confirmed by the exchanges or institutions involved. Government-seizure addresses are the exception: those are confirmed via court documents.
Is one address equal to one person?
Definitely not. A single exchange cold wallet can hold balances for millions of users; a single human can split their stack across hundreds of addresses for privacy. Cohort statistics describe the on-chain distribution of addresses, not the distribution of Bitcoin among real people.
Can I track any Bitcoin address?
Yes — paste any P2PKH (1…), P2SH (3…) or bech32 (bc1…) address. The page calls mempool.space's /api/address endpoint and returns live balance, lifetime received/sent and the transaction count. Lookups happen entirely in your browser; btclyzer does not log or store the queries.
Become a tester — get PRO free for life
btclyzer is pre-launch. The first testers who try it and send honest feedback keep PRO for life — no card, no catch.