Launch Ethereum Push Notification Service on Harmony

Name of Project / DAO / Company

Ethereum Push Notification Service (EPNS)

Application type


Proposal overview

EPNS is the world’s first decentralized communication & notification protocol for Web3. Using the protocol, any smart contract, dApp or backend can send on-chain or off-chain notifications tied to wallet addresses of a user in a multichain, open, platform agnostic way. Being an open communication middleware, notifs can be integrated and shown on any crypto wallet, mobile apps, extension or dApps.

Checkout our good vibes video: Ethereum Push Notification Service (EPNS) - YouTube


The EPNS team comes from incredibly strong technical, product, and decentralized backgrounds. Between them, they have years of experience as CTO, Gitcoin KERNEL alumni, solutions architect, product management, consulting, and more.

In addition to the strength of the immediate team, EPNS has had tremendous support from the community – showcasing the strength of our network and the extent of our impact.
Our advisors include Sandeep Nailwal of Polygon, DeFi Dad, Gitcoin KERNEL, Nischal Shetty of WazirX.

Seed-round investors include: Balaji Srinivasan, Mariano Conti, Anthony Sassano, Scott Moore of Gitcoin and more.
Seed-round VCs include: Binance Labs, The LAO, MetaCartel, True Ventures, and more.

External links

Twitter: 102k (
Telegram: 65k (Telegram: Contact @epnsproject)


Thank you for submitting a proposal to Harmony’s $300M Ecosystem Fund

We are in the process of reviewing your proposal. We would also love :blue_heart: to have the Harmony community participate to ask questions and provide feedbacks.

If you have more details to add, please do so by replying to this thread.

1 Like

We can tell it’s like Braze or Urban Airship, for blockchain. This makes sense.


  1. What’s the ask here? (how much, when and can you justify for the amount)
  2. When can the team be ready to roll this out? (specify milestones, helps with first question)
  3. How are you planning to gain adoption here with the Harmony ecosystem? (docs, tutorials, videos)
  4. What languages other than Swift (iOS) and Java (Android) will the SDK be made available to? How about Javascript (for React JS) and Dart libraries (for Flutter)?
  5. It’s been over a year since EPNS was announced, what’s the state of the launch on Ethereum? (is the sequence of launch still Ethereum first?)

About Ethereum Push Notification Service

EPNS is building the world’s first open communication layer for the Web3 ecosystem, first for Ethereum and then for L2s and other blockchains. The protocol enables any smart contracts, dApps, or traditional servers to send notifications tied to wallet addresses of a user in a platform-agnostic fashion (ie: notifs can be integrated and shown on any crypto wallet, mobile apps, extension, or dApps).

Looking forward to your reply and thank you for choosing to talk to Harmony