What a wallet controls
Separate the wallet interface, public address, signing keys and recovery backup.
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Start with: blockchain.
A wallet is an interface for viewing accounts and authorizing actions. Assets are recorded on the network. Installing another compatible wallet does not move them; moving assets requires an authorized change to the network's records.
Know which secret does what
| Item | Purpose | Share it? |
|---|---|---|
| Public address | Identifies a destination or account | Yes when needed; consider privacy |
| Private key | Authorizes actions for a key-controlled account | Never |
| Seed or recovery phrase | Recreates signing keys in compatible wallets | Never |
| App password or device PIN | Unlocks a local app or device | Never; it is not usually a recovery backup |
| Signature | Proves authorization of particular data | Only after understanding what that data permits |
Not every wallet uses a seed phrase. Smart accounts can use multiple owners, passkeys or recovery services. Learn the actual recovery rules rather than assuming that a familiar login screen guarantees recovery.
Custody is a responsibility
With a custodial service, the provider controls signing and account access under its rules. With self-custody, you control keys or account permissions and must protect recovery. A lost phone may be recoverable; a lost recovery method may not be.
Example: a watch-only wallet displays an address and balance but cannot spend from it. Visibility and control are different capabilities.
warning — No support agent needs your private key or recovery phrase. Anyone with that secret may be able to take control without your device or PIN.
Before depositing anything, ask: who can authorize a transfer, who can change those rules, and how would I recover if this device failed?