Private bridge
You lock where Zcash should arrive, then you pay a fresh Bitcoin QR. Terp mints a private note only after that Bitcoin deposit is checked. Terp is the Cosmos-SDK chain that hosts these private notes. A private note is a shielded balance commitment the chain can spend later without publishing who funded it or how much moved between notes.
An optional Private DEX swap can trade notes that already sit in that set. Approximate trade size becomes public after a swap; note amounts stay private. Leaving Terp for Zcash, when a deploy enables it, pays only the destination sealed up front.
Who it is for
- People who fund a one-time Bitcoin QR from a phone wallet (Cash App is the example) or any wallet that can send to a
bc1address, and want Zcash payout locked before they send. - Engineers who need mint gates and note shape without reading internal interface dumps.
Lab versus public network
| Surface | Status |
|---|---|
| Intent → QR → observe → re-verify → private mint | Runs in lab and local multi-net demos |
| Synthetic deposit observation | Explicit lab mode only |
| Optional private swap under public reserves | Lab research — see Private DEX |
| Mainnet Bitcoin → Terp → mainnet Zcash settlement | Not claimed as a live public network on this site |
Local or testnet success proves workflow fidelity. It is not a receipt for mainnet money.
Why two products
Private Bridge admits value into notes. Private DEX trades notes already in the set. After a swap, pool reserve changes make approximate size public; amounts inside notes do not.
Read next
- How it works — destination first, then QR, check, mint
- For users — steps, receipts, banners
- For engineers — seams and code homes
- Honesty — what this product does and refuses
- Glossary — product nouns