100 Days of Ðapps

Create your own decentralized autonomous organization.

Create a decentralized awards committee, in the form of a decentralized autonomous organization.

Officiate a wedding between two Ethereum accounts on the blockchain.

Keep a public diary on the blockchain. Never forget the events of your life.

Associate your Ethereum address with a PGP public key others can use to send you an encrypted message.

Issue a certificate of appreciation securely signed with your Ethereum account.

Send gifts in ether that can only be opened at a specified future time.

View recent large ether transfers (> 100 ETH).

Store your long-form writings on the Ethereum blockchain and IPFS.

A button whose position is stored on the blockchain and changes randomly on every transaction.

Turn any file into a unique ERC721-compatible token.

Track the activity of specific Ethereum addresses.

Venmo-like prototype for Ethereum. Request a payment from another address. 

Create a toy blockchain on the browser to understand what’s going on under the hood. With mining and balance tracking.

A basic request-response chatbot that is controlled by a smart contract. Anyone can contribute to the bot’s conversational rules by submitting a transaction to that contract.

Run polls that are hosted on a smart contract. Vote weight is proportional to the voter's balance

Store password-protected files on the IPFS network.