100 Days of Ðapps

By Anastasis Germanidis. For NYU ITP's 100 Days of Making class.

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Day 61 - DAO Creator

Create your own decentralized autonomous organization.

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Day 60 - AwardsDAO

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

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Day 59 - Marriage Certificate

Officiate a wedding between two Ethereum accounts on the blockchain.

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Day 58 - Blockchain Lifelogging

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

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Day 57 - Ethereum2PGP

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

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Day 56 - Certificate of Appreciation

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

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Day 55 - Future Gifts

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

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Day 54 - Whale Alert

View recent large ether transfers (> 100 ETH).

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Day 53 - Crypto-Essayist

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

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Day 52 - Fickle Button

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

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Day 51 - Tokenify

Turn any file into a unique ERC721-compatible token.

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Day 50 - EtherFollow

Track the activity of specific Ethereum addresses.

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Day 49 - Payment Request

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

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Day 48 - Toy Blockchain

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

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Day 47 - Decentralized Chatbot

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.

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Day 46 - Coinvoting

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

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Day 45 - DStorage

Store password-protected files on the IPFS network.