What "Read-Only" Crypto Tracking Means (And Why It Matters)
You can monitor any wallet on earth using only its public address. Understanding why that is safe — and why anything asking for more is not — is one of the highest-value things a beginner can learn.
Reading and spending require different things
A public address is a destination. It is what you give someone so they can send you funds, and it is visible to anyone on a public blockchain by design. Knowing it lets you see every transaction and the current balance. It does not let you move anything.
Moving funds requires the private key, which is a completely separate secret derived from your recovery phrase. This asymmetry is the foundation of blockchain security: publishing where you keep your money is safe, because the ledger is public and the key is not.
What this means for portfolio trackers
A tracker only needs public addresses. It reads balances from the chain the same way a block explorer does. It cannot transfer, trade, approve, or sign anything, because it has never been given the ability to.
That is the correct security model, and it means adding a wallet to a tracker carries no custody risk whatsoever. The worst case if the tracker were compromised is that someone learns which addresses you asked about — a privacy concern, not a financial one.
The line that must never be crossed
No portfolio tracker, price app, tax tool or support agent ever needs your recovery phrase or private key. Not for "verification", not to "sync your wallet", not to "claim an airdrop", not to "restore your account". Every single request is theft.
This is worth stating absolutely because the requests are convincing. They arrive as polished support chats, official-looking emails, and apps that look identical to the real thing. The rule that survives all of them: the phrase goes into the wallet device and nowhere else, ever.
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Frequently asked questions
Does this apply to stocks and commodities too?
The method does; the numbers do not. Levels, sizing and deciding in advance work identically across asset classes, but thresholds must be recalibrated — equities gap around earnings and only move during market hours, commodities trend more slowly, and currency pairs move a fraction of what crypto does, so a 1% move there is significant.
Price alerts that never need an exchange key or wallet access: crypto price alerts, or every market and alert type. Choosing an app? How the alert apps compare, from their own pricing pages.
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