Crypto Web3
HTML app
Set up cold storage, verify backups, and leave clear instructions.
A practical kit for holding your own Bitcoin and leaving a plan behind. Work through an ordered setup checklist, record wallets and backup locations without ever storing seed words, build a printable inheritance letter, and keep a yearly audit log.
Delivered as a HTML app. Open it in any modern browser — no install, no account, no server. It works offline, and the file is yours to keep.
After your on-chain payment is verified, the download link appears at checkout. No account, no email, no waiting for a message.
Pay from any Bitcoin wallet. The checkout converts the fixed USD price to BTC at the live rate and shows the exact amount to send. Paste the transaction ID after paying and the store verifies it against the address before unlocking the file. If you do not have Bitcoin yet, the no-card guide explains the shortest route.
Category: Crypto Web3 · Product ID: bitcoin-self-custody