Devcon Archive logo
Devcon Forum Blog
  • Watch
  • Event
    Event: background logo
    • Devcon 7
    • Devcon 6
    • Devcon 5
    • Devcon 4
    • Devcon 3
    • Devcon 2
    • Devcon 1
    • Devcon 0
  • Categories
    Categories: background logo
    • Cryptoeconomics
    • Devcon
    • Developer Experience
    • Coordination
    • Core Protocol
    • Layer 2s
    • Real World Ethereum
    • Cypherpunk & Privacy
    • Security
    • Applied Cryptography
    • Usability
  • Playlists

Suggested

Loading results..

View all

About Devcon —

Devcon is the Ethereum conference for developers, researchers, thinkers, and makers.

An intensive introduction for new Ethereum explorers, a global family reunion for those already a part of our ecosystem, and a source of energy and creativity for all.

  • Watch
  • Devcon
  • Forum
  • Blog

Get in touch

devcon@ethereum.org

Subscribe to our newsletter

Crafted with passion ❤️ at the Ethereum Foundation

© 2025 — Ethereum Foundation. All Rights Reserved.

devcon 7 / building a social app with spend permissions

  • YouTube
  • Details

Building a Social App With Spend Permissions

Duration: 00:39:15

Speaker: Conner Swenberg, Lukas Rosario

Type: Workshop

Expertise: Intermediate

Event: Devcon

Date: Nov 2024

Join our hands-on workshop on building a social app with spend permissions! In this workshop, we'll walk through: - Writing smart contracts for your social app. - Creating a frontend for your app. - Creating and using spend permissions to send transactions without popups. - Using paymasters to sponsor gas for your users.

Categories

Use CasesSocialAccount AbstractionkeysessionAccount AbstractionSocialUse Cases
  • Related
Farcaster frames: building embeddable Ethereum apps preview
Devcon
Workshop
1:24:46

Farcaster frames: building embeddable Ethereum apps

Frames are an open standard for creating embeddable, interactive apps in social media feeds and on the web. They help solve one of the hardest problems for Ethereum dapp developers: distribution. Although frames originated on Farcaster, it's now possible to build cross-platform frames that work on Farcaster, Lens, XMTP, and the open web. In this hands on workshop we'll introduce the core concepts behind frames and build a simple frame app that interacts with a smart contract.

Keynote: Nomic Foundation’s vision for Ethereum’s tooling ecosystem preview
Devcon
Talk
17:35

Keynote: Nomic Foundation’s vision for Ethereum’s tooling ecosystem

Nomic Foundation is the nonprofit behind Hardhat. Nomic’s co-founder and CTO will walk you through Nomic’s long-term vision for a community-driven developer tooling ecosystem for Ethereum.

Bringing your own cryptographic identity to smart accounts preview
Devcon
Talk
25:05

Bringing your own cryptographic identity to smart accounts

OpenZeppelin Contracts is the backbone behind some of the most important components behind Account Abstraction. In our efforts to improve the account development experience and amplify the design space, we're working on an Account Abstraction framework to securely develop ERC4337 accounts to comply with ERC-4337 and ERC-7562 validation rules for storage access and other related EIPs.

The Next 700 EVM Languages preview
Devcon
Talk

The Next 700 EVM Languages

What is the role of programming languages in helping smart contracts become reliable and scalable technology? Are our current languages for the EVM up to the task? Has Ethereum lost the lead in this regard? This talk explores these questions and proposes a roadmap for the development of the next generation of smart contract languages for the EVM.

Indexing Entire 2.4 Billion Transactions on Ethereum in 10 Hours preview
Devcon
Lightning Talk
08:29

Indexing Entire 2.4 Billion Transactions on Ethereum in 10 Hours

This talk covers learnings from building a general-purpose indexer which index every single transaction since genesis. There is also technical decisions when we have to deal with 7 billions records of data and how to process all of those data in less than half a day. Additionally, we will discuss the difference between batch data processing and real-time data processing, sharing best practices and strategies for both approaches.

MUD - How we built an EVM application framework from the ground up preview
Devcon
Talk
19:27

MUD - How we built an EVM application framework from the ground up

We wanted to accomplish one simple task: put a game—with all its data and logic—on a blockchain. What followed were countless technical challenges, years of efforts, and learnings that are applicable to anyone building complex onchain apps. How should data be structured? How can complex world state stay up-to-date on the client? How do we allow multiple teams to build on one single world, without it all breaking apart? Join us as we share the pitfalls and learnings.

Solving Multichain UX: Lessons from Cosmos for the Rollup Ecosystem preview
Devcon
Talk
24:30

Solving Multichain UX: Lessons from Cosmos for the Rollup Ecosystem

This talk addresses how we tackled challenges in the Cosmos ecosystem like liquidity fragmentation, multi-chain accounts, and cross-chain contract standards, and how these solutions can be used to improve cross-chain UX in the rollup ecosystem. If time allows, we'll also dig into designing flexible and scalable abstractions for rapid deployment of integrations (bridges, dexs, wallets) across not just many chains, but many diverse tech stacks.

Augur preview
Devcon
Talk
15:24

Augur

Dr. Jack Peterson presents on Augur (http://www.augur.net/), an open-source, decentralized prediction market built on Ethereum.

Digital Identity preview
Devcon
Talk
17:20

Digital Identity

Christian Lundkvist of ConsenSys (https://consensys.net/) presents on digital identity.

Introduction to Snarks preview
Devcon
Talk
22:32

Introduction to Snarks

Blockchains are a hostile world were all information is public and computations are expensive. A technology called zkSNARKs is coming to the rescue: It allows both a tremendous speedup in verifying the correctness of a computation while at the same time it hides the private details from prying eyes. This talk tries to give an idea about how and why it works.