How to Track Someone's Crypto Wallet on Solana or Base

To track a crypto wallet, you only need one thing: its public address. Every transaction a wallet makes on Solana or Base is recorded on a public ledger, so anyone can watch any wallet — a whale, a token team's treasury, a wallet that took your funds, or a trader you want to study. The question is how you watch it: manually with a block explorer, or automatically with a wallet tracker that alerts you the moment something happens.

Option 1: Check a wallet manually with a block explorer

For a one-off look at a wallet, a block explorer is free and requires no account:

Copy the wallet address you want to inspect.
Open Solscan (Solana) or Basescan (Base).
Paste the address into the search bar.
Review the wallet's balance, token holdings, and transaction history.

Explorers are the right tool for answering "what does this wallet hold right now?" Their limits show up when you need more than a snapshot: you have to keep refreshing the page, raw transaction rows don't tell you whether a swap was a buy or a sell, and there are no notifications. If the wallet dumps its position at 3am, you find out whenever you next look.

Option 2: Track a wallet with real-time alerts

A wallet tracker watches addresses for you and pushes an alert when they act. Here is the full setup in Wallet Sleuth, which takes about two minutes on the free tier:

Create a free account at walletsleuth.app/register — no card required.
Create a tracking page for the token you care about, on Solana or Base. A tracking page groups every wallet you monitor for that token in one view.
Add wallet addresses. Paste any address you want to watch — the free tier covers up to 50 wallets per tracking page.
Set alert thresholds. Choose the minimum USD value you care about and how you want to be notified: email, SMS, push notification, or in-app.
Done. Detection is webhook-driven, so alerts fire when the transaction lands on-chain — not on a polling delay.

From then on, every buy, sell, and transfer by a tracked wallet is classified and logged, and anything over your threshold triggers an alert.

What you can learn from a tracked wallet

Watching raw transactions is only the start. Wallet Sleuth layers analysis on top of the feed:

Trade classification — each transaction is parsed into a buy, sell, or transfer, with its USD value at the time.
Trader Behavior Score — every wallet gets a 0–100 score built from nine on-chain signals, including dump risk, exit pace, patience, and composure, shown as a radar chart with a price timeline.
Fund-flow mapping — when funds leave a tracked wallet, Scout can follow them and build a tree of destination wallets, so splitting funds across fresh addresses doesn't break your view.
Identity clustering — wallets that behave like they share an owner are grouped into one identity with a confidence score.

Is it legal to track someone's wallet?

Watching a public blockchain is legal in the way reading a public record is legal: addresses and transactions on Solana and Base are published to everyone by design, and blockchain analytics is a standard practice across the industry. Tracking tools read that public data — they never need (and you should never enter) anyone's private keys or seed phrase. What you do with the information is on you; none of it is financial advice.

FAQ

Can the wallet's owner tell they're being tracked? No. Tracking is read-only observation of public data. Nothing touches the tracked wallet.

Do I need the person's permission or their keys? No — just the public address. If a tool asks for a seed phrase to "track" a wallet, it is a scam.

How fast are the alerts? Wallet Sleuth uses webhooks from chain infrastructure providers, so alerts are triggered by the transaction itself rather than a refresh loop that polls every few minutes.

Can I track many wallets at once? Yes. The free tier covers 50 wallets per tracking page; paid tiers raise the limit and add analysis features. See also our guide to tracking wallets on Base.