What "tracking a Bitcoin address" means
Bitcoin has no accounts. It has addresses, and every transaction that sends Bitcoin to or from an address is written to a public ledger that anyone can read. Tracking an address means reading that ledger for one specific address and keeping the result up to date: how much Bitcoin it currently holds, which transactions moved coins in or out, when, and with how many confirmations.
Because the ledger is public, tracking does not require any permission from the owner. You can track your own addresses, an address you sent a payment to, or an address you are simply curious about. What you cannot do with an address is spend from it. Spending requires the private key, which is a separate secret that never appears on the blockchain.
What a public Bitcoin address reveals
- Current balance in BTC, calculated from the unspent outputs assigned to the address.
- Transaction history: every incoming and outgoing transaction, its amount, timestamp, block and confirmation count.
- Counterparties in the sense of other addresses in those transactions. Whether they belong to the same person is not recorded.
- Fees paid by transactions spending from the address.
What it does not reveal: the owner's identity, the private key, the purchase price of the coins, or whether the coins were bought, mined, earned or gifted. Any app that shows "profit" for an address is therefore combining the public history with historical market prices, which yields an estimate. How BTC Mate estimates performance explains this in detail.
More than a blockchain explorer
An explorer displays balance and a list of transactions for one address. That answers "what is here?" but not "how is it doing?". BTC Mate keeps the explorer part and adds the portfolio part: it values the address in your currency over time, estimates the entry price of the coins from when they arrived and the historical price at that moment, and shows the estimated profit or loss. Several addresses can be tracked together, which is what makes it a watch-only portfolio tracker for self-custody rather than a lookup tool. How the performance estimate works and where it ends.
How BTC Mate tracks an address
- You paste or scan a public Bitcoin address and give it a label such as "Cold storage" or "Savings".
- BTC Mate retrieves the public balance and transaction history for that address from a blockchain data provider, and current and historical Bitcoin prices from a market data provider.
- The app presents the result as a balance in BTC and in your currency, a list of activity, a performance chart over selectable periods, and an estimated entry price with estimated profit or loss.
You can track several addresses at once. Each keeps its own label and analysis, and the Overview shows them together. Keep in mind that a wallet usually consists of several addresses; one address shows the coins that arrived there, not necessarily everything the wallet holds. Addresses are stored on your iPhone; there is no account and no server-side profile.
What BTC Mate does not do with your address
BTC Mate is a tracking and analytics tool, not a wallet. It cannot send, receive, buy, sell or hold Bitcoin. It never asks for a private key or a seed phrase, and there is no way to enter one. Adding an address to BTC Mate changes nothing about the address itself or the wallet that controls it.
Address tracker vs. block explorer
| Task | Block explorer website | BTC Mate |
|---|---|---|
| Look up one address once | Good | Good (built-in explorer) |
| Keep several addresses with labels | Not usually | Yes |
| Value in EUR, USD or GBP | Sometimes, current price only | Yes, current and historical |
| Performance chart over time | No | Yes |
| Estimated entry price and profit/loss | No | Yes, clearly marked as estimates |
| Market data, news, network insights | Partly | Yes |
Who this is for
People who keep Bitcoin outside an exchange. If your coins sit on a hardware wallet or in another self-custody setup, you probably see a balance but no history and no performance. BTC Mate gives you the overview an exchange would show, while the keys stay exactly where they are. See the cold wallet tracker guide and what watch-only means. If you only need a one-off lookup, the built-in blockchain explorer covers addresses, transactions and blocks.