1 · Wallet
Your ecash is stored in this browser only (localStorage). Export it as a token to back it up or move it to another wallet, like Minibits, cashu.me or Nutstash. Exporting empties this wallet.
Undelivered ecash at other mints. A recipient refused these after a cross-mint, or they were minted late. They're yours: copy the tokens into any Cashu wallet.
2 · Podcast
Feed blocked by CORS? Paste the XML
| Recipient | Type | Split | Sats |
|---|
3 · Boost
| Recipient | Sats | Fee reserve | Status |
|---|---|---|---|
| Max cost | |||
For creators: a boost link for your show
Put Lightning addresses in your feed's value block (type="lnaddress"). Then share this link, or embed it. Fans pay with ecash, or with one invoice from any wallet, and every split gets paid.
Check my feed
Load your feed above, then check it. This shows what share of your value block a web or Cashu listener can actually pay, and what to change. It only reads your feed and your Lightning addresses' LNURL pages. It never asks for an invoice.
| Recipient | Type | Split | Result |
|---|
How it works
- Your browser reads the feed's Podcasting 2.0
<podcast:value type="lightning">block. If the episode has its own block, that one wins. - The boost is split by the feed's shares in whole sats, using largest remainder.
fee="true"recipients take their percentage off the top first. - For each Lightning-address recipient, nutboost fetches an invoice for exactly that share (LUD-16/06). The invoice carries an
rss::payment::boostcomment with your message (LUD-12). Then it asks your mint for a melt quote (NUT-05). - You see the total, including the mints' fee reserves, before anything is paid. Then each share is paid with its own melt. The proofs are journaled before every melt. If a payment fails, the mint is asked whether those proofs were spent (NUT-07). Unspent proofs go back into your wallet.
- Ecash-direct recipients skip Lightning. A
type="cashu"recipient holds a NUT-18 payment request (creqA…), delivered by HTTP POST or a NIP-17 DM. Atype="nutzap"recipient is an npub, paid as a NIP-61 nutzap: ecash P2PK-locked to the key in their kind:10019, with a 30-day refund to you. If they don't accept your mint, nutboost moves the share across by Lightning first (a "cross-mint"), and adds the target mint's input fee so they still net their full share. - Keysend-only (
node) recipients can't be paid by a mint. They're shown and skipped, and you keep their share, unless you tick "redistribute".
Custodial note: ecash is a bearer IOU from the mint you choose. Keep small amounts. Open source (MIT): github.com/HexboxTools/nutboost. Built for Nut November 2026.