CashDrop

The money arrives first. The wallet can come later.

ZECATHON · SHIELDED ZEC, SENT LIKE CASH
THE PROBLEM

Crypto makes the recipient do the work first.

01
Install a wallet
02
Back up a seed phrase
03
Find the right address
04
Send it back
05
Check network & type
06
Finally, you pay
Addresses are long. Transparent ones leak. One wrong paste and the money is gone.
THE FLIP

“Here’s my address, pay me” becomes “money is waiting, claim it.”

TODAYRecipient makes wallet → shares address → sender pays
CASHDROPSender seals payment → shares link → recipient claims
HOW IT WORKS

A one-time envelope, sealed on your device.

01
Seal

Fresh shielded envelope created locally. Fund it from any Zcash wallet.

02
Send

Claim link or QR card through an encrypted chat, or in person.

03
Claim

Verified on-chain, swept to their own shielded wallet. Envelope empty.

Changed your mind? Take it back any time before they claim.
LIVE DEMO

Real ZEC. Two devices. One link.

01Create a 0.01 ZEC drop and fund it
02Wait for detection and confirmation
03Send the link to a second device
04Open it: funds verified on-chain
05Paste a shielded address, slide to claim
06Show the explorer, and what it can’t see
07Reopen the link: already empty
08Create another drop and take it back
PRIVACY

The chain sees a shielded transaction. That’s it.

× No sender, recipient, amount or note on-chain
× Secrets never reach our servers
× No accounts, analytics or trackers
BLOCK EXPLORERMAINNET
TypeShielded (Orchard)
Sender
Recipient
Amount
Was it a CashDrop?
THE ONE RULE

The link is the money.

Share it privately

Native share sheet first. Encrypted chats or in person.

Never post it

Copying sits behind a warning. Nothing goes to the clipboard silently.

Leaked? Take it back

Reclaim any unclaimed drop. First confirmed spend wins.

THREAT MODEL

We protect the chain. Not the chat.

CashDrop hides the transaction graph. It can’t fix an insecure messenger, a compromised phone, or what people say out loud.

IT IS NOT
Escrow Custodial A smart contract A bank account ZIP 324 compliant, yet Production-audited
JUDGING

Four reasons it belongs on Zcash.

Privacy

Fully shielded both ways. Secrets local. Explicit bearer-link threat model.

Usefulness

Pays people before they have a wallet. Gifts, refunds, rewards, onboarding.

Execution

Real funded drop, real claim, double-claim rejected, reclaim working.

Originality

Push payment before onboarding. Productises a dormant protocol idea.

ROADMAP

From hackathon to handoff.

NOW
Hackathon

Testnet drops, QR claim, shielded sweep, reclaim, threat model.

NEXT
Wallets

One-tap claim in compatible wallets. Deterministic sender recovery.

LATER
Consumer

Gift cards, printable envelopes, event drops, optional PIN.

THEN
Platform

SDK, refund API, creator and support-desk integrations.

Hand someone cash.
Through a message.

CashDropcashdrop.example