Online send / receive — testnet. A companion to the offline generator.
Hot wallet — testnet only. 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. Do not enter a
mainnet seed here. For real funds, generate and sign offline.
⚠ 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.