NFTs
4 technical briefings from 4 companies building nfts infrastructure.
NVAL demos pricing infrastructure for illiquid assets, starting with NFTs. Using AI and on-chain data feeds, NVAL produces fair market values for NFTs in near real time — foundational for any financial workflow (lending, borrowing, insuring, trading) on non-fungible assets that have no spot price. NVAL sits as an analytics layer between blockchains (L1s, L2s, cross-chain) and the industries building on top (gaming, sports, trade finance, accounting, lending). Mark (CTO) walks through the REST API documented with OpenAPI: a "try it out" docs UI, a Postman collection, and a CLI all return the same price prediction for a specific NFT (the demo values a Doodle at 3.3 ETH with 96% confidence, sitting between the listed price of 4.2 ETH and the highest offer of 2.8 ETH). A Chrome extension surfaces NVAL prices on OpenSea pages, and the NVAL web app shows floor price, listed price, and price history against actual trade prints. The price-history endpoint returns 52 weekly data points across a year (configurable daily). Feature importance breaks down what drives price — 96% market action for a Doodle, 72% market action + 30% accessory-trait for a CryptoPunk — giving traders a way to understand why NVAL priced an NFT where it did.
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.
Marvin Janssen & Friedger Müffke
Marvin Janssen, technical lead at the Stacks Foundation, gives a hands-on tour of Stacks — a Bitcoin L2 blockchain that anchors every block to the Bitcoin chain via proof-of-transfer, inheriting Bitcoin's security while adding smart-contract capability. The briefing centers on writing a SIP-009 NFT in Clarity, Stacks' non-Turing-complete Lisp-based smart-contract language. Marvin uses Clarinet — the Stacks analogue of Truffle plus Ganache — to scaffold the project, opens the Clarinet console for a REPL tour of Clarity (strongly typed, with distinct signed vs unsigned integer literals), then implements the SIP-009 NFT trait (Stacks' ERC-721 equivalent) using NFT primitives baked into the language (nft-mint, nft-burn, nft-transfer) — the correct balance-sheet semantics come for free. The ownership model is user-defined: Marvin asserts that sender equals tx-sender (Clarity's msg.sender) before transferring. A closing clarinet-console session mints two NFTs, checks owners, and transfers one between principals in the local Clarity VM.
Federico Pomi & Daniel Rollingher
Federico, CEO and co-founder of Fabrica, presents Fabrica — a platform that makes real estate programmable by wrapping each property in a legal trust whose ownership is represented by a non-fungible token. The demo walks through a complete on-chain land transaction on the Fabrica platform: a buyer picks a plot, clears KYC, links a Plaid-connected Chase checking account, signs a transfer agreement, and the NFT plus bank transfer settle together in about three minutes — with a recorded county deed and land-tax-assessor appointment falling out of the same flow. Because Fabrica uses a standard NFT contract, each property shows up on OpenSea with full transaction history, priced in Sila USD. Federico closes with the broader vision — collateralize, borrow against, fractionalize, or earn DeFi-vault yield on real property — and Fabrica's state-by-state expansion in California, Arizona, New Mexico, and Colorado.