DeFi
8 technical briefings from 8 companies building defi infrastructure.
Ansible Labs co-founder Dan demos Beam, the team's crypto-to-cash off-ramp, at V-Sum Nineteen. The briefing covers wallet-connect onboarding, blockchain risk screening (TRM Labs / Chainalysis / Elliptic) on both the enrolled wallet and the source-of-funds address, Persona KYC, and a unique 1:1 smart-contract Beam address tied to a user + bank-account pair. A live production $15 off-ramp lands in a Bank of America account via RTP in minutes, with ACH, RTP, and push-to-card (Visa Direct / Mastercard Send) on the payout roadmap.
Philip Pieper & Sam Stone
Swarm Markets presents their BaFin-licensed DeFi exchange at V-Sum Twelve. Presented by Philip Pieper, covering regulated token swaps, the dOTC peer-to-peer trading service, SX1411 token standard, and their Passport compliance system.
Max Howenstine
Zero Hash presents their crypto-as-a-service API at V-Sum Twelve. Presented by Max Howenstine, with a live demo of crypto-back credit card rewards built with Deserve — three API calls to go to market.
Ben Verscheure & Matt Clower
TreasureFI presents their corporate cash management platform at V-Sum Twelve. Presented by Ben Verscheure, covering Treasure Cash (FDIC-insured) and Treasure High Yield — tools for businesses to optimize idle cash across money market funds and T-bills.
Stephen Young
NFTfi presents their peer-to-peer NFT-backed lending marketplace at V-Sum Eleven. Presented by Stephen Young, walking through the borrower experience — listing NFTs as collateral, receiving offers, and managing loans.
Mike Sall
Goldfinch Finance presents their decentralized credit protocol at V-Sum Eleven. Presented by co-founder Mike Sall, covering how Goldfinch enables crypto lending to real-world businesses through Backer and Senior Pool mechanics.
Mark Phillips & Abhay Kumar
Helium walks through the largest wireless network in the world — an IoT network built on the Helium blockchain and powered by token incentives (HNT, trading ~$27.50 with a ~$3.2B market cap at time of demo). explore.helium.com visualizes the hotspots providing LoRaWAN coverage in cities like San Francisco. Helium hotspots (40+ approved manufacturers under the Decentralized Wireless Alliance) plug into power and internet at home, broadcasting a long-range IoT signal for sensors and soon handsets. The live demo uses a Dragino LDS-S01 door sensor: opening and closing the door sends 9-byte packets over the Helium network, picked up by the fittingly named "stable-rouge-puma" hotspot and routed to console.helium.com in real time. The packets flow onward via a Datacake integration into a dashboard — a full end-to-end application built with a cheap sensor and the public network. On the incentive side, the hotspot routing the demo traffic earned ~0.339 HNT over 7 days and ~1.3 HNT over 30 days from proof-of-coverage mining plus a small Data Credit reward for actually carrying the packets.
Mike Demarais
Rainbow introduces itself as the most accessible Ethereum wallet — built to deserve a spot on your home screen rather than forcing a 30-word seed-phrase gauntlet on new users. The demo tours what makes Rainbow distinctive: auto-discovery of ERC-20 tokens across Ethereum mainnet, Arbitrum, and Optimism merged into a unified view (no chain-switching); a Savings section wired to Compound Finance that auto-swaps any deposited asset into DAI under the hood; Uniswap liquidity-pool positions surfaced with annualized fees; NFTs as first-class citizens including floor prices, trait-based search into OpenSea, a Showcase feature for favorites, and per-wallet public web profiles like rainbowwallet.eth; a swap UI that takes any-to-any input and exposes EIP-1559 custom gas tipping; and WalletConnect as Rainbow's deliberate answer to an in-app dApp browser — connect Rainbow to any web dApp via mobile Safari and bounce back to Rainbow for action approvals.