The CDR Buildathon
We have winners!
For one week, builders pushed on a new question: what becomes possible when sensitive data can live on-chain without ever being exposed? They built it on Story's Confidential Data Rails. These are the seven teams that stood out.
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Relive Demo Day.
The full Demo Day stream: every team's live pitch and the awards, start to finish.
Two tracks, seven prizes.
The field was strong enough that we expanded the App Track from the originally planned prizes to five. The competitiveness of this buildathon earned it.
Technical Track
Toolkits, primitives, and protocol-level work that makes CDR easier to build on.
App Track
Products built with CDR, expanded to five prizes for the competitiveness of the field.
litmus
$600Prove-to-read content, gated on-chain.
A prove-to-read content platform built on CDR. Creators publish encrypted content gated behind on-chain conditions like NFT ownership, token balance, transaction history, IP licenses, or time locks, composed freely with AND/OR logic. Readers prove they qualify on-chain, and CDR validators enforce it trustlessly. Eight condition types out of the box, all composable.
CDR-Kit
$500What wagmi is to Ethereum, for Story CDR.
A developer toolkit that makes Story CDR usable in production without hand-rolling the protocol. It ships as 15 npm packages: a typed TypeScript SDK, a React layer (hooks, headless components, and a styled UI kit), a Solidity standard library of nine deployed condition contracts, an autonomous-agent SDK, framework adapters for Vercel AI / OpenAI / LangChain / AgentKit / GOAT, an MCP server, a CLI, a Claude Code plugin, and a scaffolder with nine templates.
Keyring
$700Let an AI agent use your secrets without ever seeing them.
A vault that lets an AI agent use your secrets without ever seeing them. You store a secret once, encrypted on-chain via CDR, and give an agent a plain-English policy. When the agent makes a request, Keyring decrypts the secret inside a Phala TDX enclave (a Trusted Execution Environment) where an AI judge checks it against your policy and injects it into the outgoing call. The agent receives only the result, never the key. Scoped, revocable, metered, and fully gasless.
Nythera
$500A secure recovery vault for your most sensitive secrets.
A secure recovery vault for seed phrases, private keys, passwords, notes, and files. It's for users and teams who need a backup plan without handing their secrets to a website: data is encrypted and recovered through a browser extension, trusted contacts can approve recovery but can never see the content, and recovered secrets auto-clear after 60 seconds.
Confide
$500Honest feedback, without exposing the people who give it.
A privacy-first survey platform that lets people collect honest feedback without exposing respondents' data. Most survey tools store responses the platform itself can read, so users have to trust the company behind the tool. Confide encrypts every response before it is stored, and only the survey creator can decrypt it. Ideal for employee feedback, health questionnaires, research studies, and anything where trust is the barrier to honesty.
Sigmax
$400Confidential copy-trading: copy the result, never the recipe.
Confidential copy-trading. Traders who sell signals are stuck: post a call in a paid group and someone screenshots and leaks it. Sigmax fixes that. A leader publishes signals encrypted, and followers don't receive the strategy, they just get the right for their own wallet to copy the trade automatically. A secure agent executes it on each follower's account but can never touch their funds. Followers copy the result, never the recipe.
ZeroSight
$300A blind prediction market where your bet stays secret until it resolves.
A blind parimutuel prediction market on the Story Aeneid testnet. Users bet whether an asset (IP, BTC, or ETH) will close above a target in hourly and daily rounds, but unlike normal prediction markets, the direction of every bet stays encrypted until the round resolves. The on-chain contract only ever holds the bet amount and a CDR vault UUID, never the Up/Down choice. That removes copy-trading and front-running, the core fairness problem with transparent on-chain markets.
Seven teams that raised the bar.
Technical Track
$1,100App Track
$2,400Thank you.
To every builder who showed up, stayed late, and shipped something real: thank you. You took a brand-new primitive and turned it into new DeFi primitives, markets, toolkits, and products in a matter of weeks. That is genuinely hard, and you made it look exciting.
Congratulations to our winners, and a sincere thank-you to everyone who participated. Every submission pushed the limits of what confidential data on-chain can do.
And this isn't the last one. We'll be running another hackathon when CDR launches on mainnet, so keep building, and we'll see you there.