Your dApp is 90% Web2: Rebuilding One App on the Open Stack.

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Speaker: SantiagoDevRel

Type: Workshop

Expertise: Some familiarity with the topic

Event: Devcon

Date: Nov 2026

Most ‘Web3 apps’ are one smart contract wrapped in a stack nobody can check: the site on Vercel, the data in Supabase, sign-in through Google, the code on GitHub. Take any one of those away and the app is gone. So we run the honest experiment. First we list everything the app quietly depends on and mark who you are forced to trust. Then we rebuild it live on open pieces: data anyone can query and verify, storage where the address is the file's own fingerprint, login with a wallet instead of an account. You build along in your own repo. (e.g, Metamask, Ethereum Sepolia, Arkiv, Walrus, ENS) Every layer gets a verdict: solved, partial, or missing. Hosting, source control, CI, naming and RPC access are where it gets uncomfortable. Some have no open replacement yet. We close with lessons from nearly a decade of building open data infrastructure and a concrete build-list of the missing pieces. Hands-on, educational, and honest about what does not exist yet.