Custody choices, seed phrases, hardware wallets and the scams that target new users — what protects your coins, and what quietly puts them at risk.
With a custodial account a company holds the keys and you trust it. With self-custody you hold the keys and carry the responsibility. Here is what changes, risk by risk.
A seed phrase is the master backup of a self-custody wallet. Here is how the words are made, why they are so hard to guess, and why they are so easy to lose to a scammer.
A hardware wallet is a small device whose only job is to hold private keys and sign transactions. Here is the workflow, the checks that make it useful, and the gaps it leaves open.
Most crypto scams are old tricks with a new payment method. Here are the main types, the official loss figures, and the red flags that give them away.
To use most crypto apps you first give a smart contract permission to move your tokens. Scammers have learned to ask for that same permission. Here is how it works and how to stay in control.
A crypto address is the destination you hand out to get paid — a shortened, error-checked form of your public key.
A cold wallet keeps your private keys away from the internet, so malware on your everyday computer cannot reach them.
Your private key is the secret that lets you spend. Whoever knows it controls the funds.
A seed phrase is the list of words that backs up a self-custody crypto wallet. Whoever has the words controls the wallet.
Blocks, transactions, keys and fees: the moving parts every other topic builds on.
Supply schedule, mining, difficulty, Lightning and spot ETFs.
Accounts, gas, staking, the fee burn and layer-2 rollups.
Stablecoins, exchanges without order books, liquidity pools and on-chain lending.
How analysts turn public ledger data into cost-basis, holder and flow signals — and where that breaks.
Spot versus derivatives, funding rates, open interest, liquidations and order books.
Risk, volatility, diversification, position sizing and market cycles for crypto beginners.
Most losses in crypto have little to do with broken cryptography. They come from lost backups, compromised devices, and people being persuaded to send funds or reveal a recovery phrase. Because blockchain payments usually cannot be reversed, prevention matters far more than recovery. This section starts with the basic choice of who holds your keys, then covers the backup that controls a self-custody wallet, the devices built to keep keys offline, the scams that target newcomers, and the token permissions that let a single signature empty a wallet. We name no wallet brands as recommendations; the guides explain how things work so you can judge any product yourself.
Read the custody guide first, because the right precautions depend on who holds your keys:
The seed phrase, private key and cold wallet glossary entries are short refreshers. If keys and addresses are still unclear, go back to private key vs public key in Blockchain Basics. Our risk disclosure summarises the wider risks that financial regulators warn about, including scams and the lack of investor protection.
No. Real support staff do not need your recovery phrase, and anyone who asks for it should be treated as a scammer. Seed phrases explained covers how to store it and who should never see it.
No. It keeps keys offline while you sign, but it cannot protect a recovery phrase you type into a website, or stop you approving a malicious transaction. The hardware wallets guide lists the gaps it leaves open.