# Devcon5 On-Chain Ticket Sale

DevFeed: [Devcon5 On-Chain Ticket Sale](<https://devfeed.tech/articles/devcon5-on-chain-ticket-sale-16856.md>)

Original publisher: [Read original article](<https://blog.ethereum.org/en/2019/08/22/devcon5-on-chain-ticket-sale>)

Author: Devcon

Published: 2019-08-22T00:00:00Z

Content type: article

Language: en

Sources: [Ethereum Foundation Blog](<https://devfeed.tech/sources/ethereum-foundation-blog.md>)

Topics: [Ethereum](<https://devfeed.tech/topics/ethereum.md>), [Transactions](<https://devfeed.tech/topics/transactions.md>), [Open Source](<https://devfeed.tech/topics/open-source.md>), [Ethereum Name Service (ENS)](<https://devfeed.tech/topics/ens.md>)

Tags: [community](<https://devfeed.tech/tags/community.md>), [devcon](<https://devfeed.tech/tags/devcon.md>), [ethereum](<https://devfeed.tech/tags/ethereum.md>), [events](<https://devfeed.tech/tags/events.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [payments](<https://devfeed.tech/tags/payments.md>), [ticketing](<https://devfeed.tech/tags/ticketing.md>), [transactions](<https://devfeed.tech/tags/transactions.md>)

## AI overview

The article announces an NFT-based, on-chain ticketing experiment for Devcon5, combining a raffle and an auction. It explains the transaction-based raffle, the auction's blind bidding and reveal process, fees and refunds, and a later appeals round for unredeemed tickets.

## Source excerpt

Over the last few months, we've been coordinating with the talented team over at ether.cards to bring an NFT-based on-chain ticketing solution to the Ethereum community in time for Devcon5. This experiment will take place in two parts, with a raffle and an auction with proceeds donated to the...