Wallet
Moving Coins Off an Exchange: A First Self-Custody Transfer
The first withdrawal to your own wallet is a chain-matching problem, not a courage problem. A six-step sequence, the three failure modes, and what each one costs to fix.
Wallets
Wallets explained by who holds the key
The most useful question about any wallet is not which brand it is, but who controls the private key — and what that means when something goes wrong.
- Hot wallets
- Cold wallets
- Custodial wallets
- Non-custodial wallets
- Wallet security
Wallet
EIP-7702: What It Means When Your Address Has Code
EIP-7702 lets a normal wallet delegation-point at contract code. What the delegation indicator is, how to revoke it, and why the risks are about signatures, not keys.
Wallet
What Brokerage Custody Insurance Covers — and What It Does Not
SIPC and FDIC answer two narrow questions, and neither is about market losses. What each covers, how the customer protection rule backs the custody, and where crypto sits.
Wallet
Watch-Only Wallets: What an xpub Exposes
An extended public key lets a wallet rebuild every address in an account without the ability to spend. What BIP32 says it reveals, and why it needs more care than a single address.
Wallet
Wallet Derivation Paths: Why One Seed Shows Different Addresses
One seed produces different first addresses in different wallets because each wallet follows a different derivation path. How BIP44 and BIP84 define those paths, and what the apostrophe means.
Wallet
WalletConnect Sessions: What You Approve, and for How Long
A WalletConnect session is a standing permission, not a login. What each namespace grants, how expiry works, and how to review and revoke it.
Wallet
Passkeys and Account Abstraction: Where the Key Lives Now
A passkey signs with a key the site never sees, and ERC-4337 decides what it means. Where the key lives, and what is still a single point of failure.
Wallet
Multisig Thresholds: Who Can Move Funds, and Who Cannot
An m-of-n threshold decides who can move funds and how many signers you can afford to lose. How 2-of-3, 3-of-5 and 4-of-7 compare, and the recovery trap.
Wallet
Transaction Simulation Before Signing: What a Wallet Preview Can Miss
A simulation runs your transaction against a copy of chain state and shows the balance change. The gap between that copy and the real block is where the surprises live.