The toolkit
10 tools
What we recommend for keeping your coins and accounts safe. No rankings. Partner links are marked.
Affiliate & referral disclosure — read this first
Ledger, OneKey and Keystone: affiliate links. If you buy through them, we may earn a commission at no extra cost to you. Proton, Claude and Lovable: referral links; we may receive program benefits, and you may receive a perk if the terms allow it. That is not the same as a sales commission: each service sets its offer and eligibility. Nobody paid to be listed; every entry states what the tool does not do alongside what it does.
Prices, stock and discounts: check the official site; they can change without notice. We do not see your cart.
Hardware wallets (the part that matters)
Keep the signing key off the computer where you browse and open mail. Careful still comes separately.
Ledger
affiliate linkLong-standing hardware-wallet manufacturer with the widest model range in the category and a very large supported-network catalog.
People who want one device that works with the apps they already use.
Does not stop you approving a malicious transaction, and does not protect the seed phrase written on paper beside it.
Official store (affiliate link)
shop.ledger.com
OneKey
affiliate linkHardware-wallet maker with published, inspectable firmware and apps, spanning air-gapped and mobile-first models.
People who want to be able to read the code instead of trusting a closed stack.
Open source means auditable, not guaranteed. It still signs whatever you tell it to sign.
Keystone
affiliate linkAir-gapped hardware wallet: transactions cross the gap as QR codes, so the signing device never touches the network.
People building a cold setup who want the signing key on a machine that is never online.
It adds a step, not immunity. The QR you scan still has to be read before anything is signed.
Official store (affiliate link)
keyst.one
Read next: Approval phishing · Address poisoning
Buy it where it was built
A tampered hardware wallet can arrive with a fresh seed phrase, modified firmware or a cable that logs what you type. That box has genuinely been sold. Buy from the manufacturer's official store, check the seal when it lands, and never accept a second-hand or gifted wallet.
Privacy and accounts
Protect your mail and credentials too: many accounts can be recovered through your inbox.
Proton
referral linkSwiss privacy company: encrypted mail, VPN, password manager and passkeys, funded by subscriptions rather than advertising.
Anyone whose crypto footprint starts in an inbox that a stranger could read.
It does not make you anonymous, and it will not save you from a phishing page you typed the password into yourself.
Official site (referral link)
proton.me
Building things (this is not security)
Assistants for writing, research and building apps. Their job is different, so they get their own section.
Claude
referral linkAI assistant from Anthropic for writing, research and code. This referral gives you a free week of Pro.
People who want help drafting, summarising or reviewing code, and will check the answer.
It can be confidently wrong. Never paste a seed phrase or private key into any chatbot, and verify anything it says about a token yourself.
Official site (referral link)
claude.ai
Lovable
referral linkAI-assisted app builder: describe what you need and get a working web app you can keep editing.
People who need a tool or a landing page this week and don't want to spend the week on plumbing.
It ships interfaces, not safety. Anything that touches keys, funds or personal data still needs a human who knows what they are doing.
Official site (referral link)
lovable.dev
Free tools from CryptoStrapon
No affiliate links, no sign-up: things we built that you can use right now.
On-chain verification (free public tools)
No affiliate links, no referral codes, no commission. Independent public block explorers for checking an address or a transaction yourself.
Etherscan
free public toolThe reference explorer for Ethereum: transactions, contracts, token transfers and the approvals a wallet has granted.
A green "verified" source-code tick is not a safety check; plenty of scam tokens publish verified code.
Open explorer
etherscan.io
Tronscan
free public toolThe TRON explorer: TRC-20 USDT transfers, contracts and account history.
It shows what landed on-chain; it does not tell a lookalike token from the real one for you, and it cannot reverse a transfer.
Open explorer
tronscan.org
Mempool.space
free public toolOpen-source Bitcoin explorer for fees, confirmations and the mempool.
It shows whether a payment is confirmed; it cannot cancel or speed up a transaction you did not set up for it.
Open explorer
mempool.space
Blockchair
free public toolMulti-chain search across many networks from one box.
Handy for a first look; for contract details, use the network's own explorer.
Open explorer
blockchair.com
How this page is built
- No rankings or paid positions. Nobody buys their place or the wording of an entry.
- Only active affiliate or referral programs are listed. Pending programs and brands without one stay out; every new entry must disclose the relationship and its limits.
- Every affiliate and referral link was reviewed on 28 October 2026; if one stops working, the entry leaves the page the same day.
Editorial independence and moneyHow we verify what we publish
What this is not
This is not financial or legal advice and not a safety guarantee. No device on this page stops you signing a malicious transaction or handing your seed phrase to whoever asks for it. Everything else we publish is educational documentation: you decide, you verify.
If an entry describes a product badly or a link stops working, write to us and we will fix it the same day. Contact page.