Online send / receive — testnet. A companion to the offline generator.
Hot wallet. Your seed is typed into this page and used to sign in your browser. It is
never stored and never leaves this tab, but a web page is not cold storage. Fine for testnet, and
for small mainnet amounts you'd accept losing (like any mobile wallet). For meaningful funds, load a
watch-only xpub here and sign offline — never put a large-balance seed in a web page.
⚠ Mainnet. Do not paste a mainnet seed here. Load your account xpub (watch-only), build an unsigned PSBT below, sign it offline, then broadcast the signed PSBT here. Hot send/sweep are disabled on mainnet.
Send testnet coin here, then Refresh. Same BIP-84 derivation as the offline Olesia generator.
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Watch-only online: Build unsigned here (fills from the Send fields above) → sign it offline → Broadcast signed here. The seed never needs to be online.
Balances/broadcast via mempool.space. No analytics, no storage. Source: the packages/bitcoin module, signing with @scure/btc-signer.