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Effisend, Venue Commerce on ARB

Turn every venue into a financial platform, starting with fan merchandise checkout.

视频

技术栈

React
Node
Solidity
Expo
LiFi
Layerswap
OpenZeppelin

描述

Effisend - Turn every venue into a financial platform.

Effisend helps merchants inside venues accept stablecoin payments, starting with merchandise and event sales. Customers authorize a payment; Effisend handles checkout and verifiable onchain settlement. Writing this phrase here so that Swagtimus knows that this is not entirely done on AI :3.

Real purchases at Tokyo Dome City · Deployed on Robinhood Chain · $193k in non-dilutive funding

Some Fast links:

Try Effisend · Payment proof · Checkout contract · Source and tests

Built for the moment a customer wants to buy

Merchandise and event sellers need to know which order was paid, whether the amount is correct, and when they can hand over the goods. A wallet transfer alone does not enforce those checkout rules. Asking customers to create another account or obtain a separate gas token adds steps before the sale can finish.

Effisend brings order creation, payment authorization and confirmation into one checkout.

One order. One signature. Verified settlement.

The merchant tells DeSmond, our AI assistant, “Robinhood Order 5 USD.” Effisend opens a WalletConnect QR. A customer holding USDG on Robinhood Chain connects a compatible wallet and signs one authorization—no Effisend account or ETH required.

Our relayer pays the gas. The checkout contract transfers the exact USDG amount to the merchant and records the order as paid. Existing Effisend wallet users can also access our selfie-and-PIN checkout.

Real commerce, with new infrastructure built at Founder House

Our earlier Pudgy Penguins merchandise and gachapon activation at Tokyo Dome City processed almost for 900 people at that venue at that time. These purchases gave us direct experience serving customers and operating checkout in a live venue.

From merchant checkout to venue finance

Our initial customers are merchandise and event operators reached through venue relationships. We plan to expand from individual activations to multiple merchants within each venue, then repeat that deployment across venues. Our proposed business model combines transaction fees with venue software subscriptions.

The roadmap extends into revenue distribution across venue partners and merchant balance management, followed by payments for unattended retail and physical AI systems.

Our team completed a six-month enXross residency at Tokyo Dome City, was selected for Base Batches 002, and has secured $193,000 in non-dilutive grants and hackathon prizes.

本次黑客松进展

During Founder House, we shipped Robinhood Order on Robinhood Chain (chain ID 4663). A merchant creates a USDG order through DeSmond, and the customer connects their own wallet through WalletConnect. The customer signs one EIP-3009 USDG authorization; our relayer sponsors the gas and submits the payment. The customer needs USDG, but no ETH or Effisend account. We deployed a Solidity Checkout contract that verifies an offchain EIP-712 order signature and enforces the exact merchant and amount, a 30-minute validity window, and one settlement per order. Its `pay()` call checks that the contract received exactly the authorized USDG before forwarding funds and recording payment. That balance check also guards against USDG’s non-reverting authorization replay behavior. The contract retains no USDG. Splits to up to five partners are implemented and tested, but remain disabled in the app. Evidence: An end-to-end 0.01 USDG payment settled through "pay()" using 139,864 gas, paid by the relayer. The customer wallet paid no gas. The contract has 18 passing tests and an exact-match Sourcify verification. Payment: https://robin.etherscan.io/tx/0x0e9461c269c192694de70e099c76b615ffab5448147fa1a86e35bd7a60737ba1 Deployed contract: https://robin.etherscan.io/address/0x97a394a57d9Cb523CAAFa2482215e86908b780F4 Source verification: https://sourcify.dev/server/v2/contract/4663/0x97a394a57d9Cb523CAAFa2482215e86908b780F4 Source and tests: https://github.com/altaga/Effisend-RH Robinhood Order: Checkout smart contract https://github.com/altaga/Effisend-RH/blob/main/Contracts/checkout/contracts/Checkout.sol

融资状态

Effisend has secured $193,000 in non-dilutive funding through hackathon prizes and ecosystem grants, including a $110,000 award from Hedera Africa and a $25,000 grant from Starknet. We have not raised outside equity investment to date. We also completed a six-month enXross residency at Tokyo Dome City and were selected for Base Batches 002. We will start raising a round asap.
队长
LLuis Eduardo Oliver
项目链接
赛道
AIOtherSocialFi