Tool
xpub Explorer
Paste an extended public key and instantly see every address derived from it — with balances, transaction counts, and USD values. Your xpub never leaves your browser. We derive addresses locally and only send those (which are already public on-chain) to our server for balance lookups.
How this tool works
1. Your browser parses the xpub and derives the first 20 receive (m/0/*) + 20 change (m/1/*) addresses locally, using the open-source BIP-32 math from @scure/bip32 and bitcoinjs-lib. The xpub itself is kept in a local closure and garbage-collected when you leave the page.
2. Our server receives the derived addresses (never the xpub) and proxies them to Blockstream for balance and tx-count lookups. Those addresses are already visible on the public blockchain to anyone running a node — sending them to a proxy doesn't reveal anything new.
3. Your browser renders the result table. Nothing is stored server-side beyond ephemeral request logs (address count, not the addresses).
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