# 21 in 21: David Gumberg on the Chaincode ₿OSS Challenge and Becoming a Bitcoin Core Contributor

Page: https://stenobird.com/podcast/21-in-21-7274084/21-in-21-david-gumberg-on-the-chaincode-oss-challenge-and-becoming-a-bitcoin-core-contributor
Text version: https://stenobird.com/podcast/21-in-21-7274084/21-in-21-david-gumberg-on-the-chaincode-oss-challenge-and-becoming-a-bitcoin-core-contributor.md
Podcast: [21 in 21](https://stenobird.com/podcast/21-in-21-7274084)
Published: 2025-12-17T14:00:25+00:00
Episode link: https://feeds.fountain.fm/225QxxaXdKbEEjEXSha3/items/BX2Rj9hTzyH8BYDSB2W9/files/AUDIO---DEFAULT---c162188e-6c96-42cf-b90b-7d9e689295c0.mp3
Audio file: https://feeds.fountain.fm/225QxxaXdKbEEjEXSha3/items/BX2Rj9hTzyH8BYDSB2W9/files/AUDIO---DEFAULT---c162188e-6c96-42cf-b90b-7d9e689295c0.mp3
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JSON: https://stenobird.com/v1/public/podcasts/21-in-21-7274084/episodes/21-in-21-david-gumberg-on-the-chaincode-oss-challenge-and-becoming-a-bitcoin-core-contributor
Duration seconds: 1387

## Resource

Haley Berkoe sits down with David Gumberg, a Bitcoin Core contributor at Localhost , a bitcoin-focused research center in the Bay Area. David shares how he got into bitcoin, what pushed him from curiosity to contribution, and how completing the Chaincode ₿OSS Challenge in 2024 helped him make the leap to contributing to Bitcoin Core full time. They also dig into what he’s focused on now in Core: Compact Block Relay, block propagation times, and why improving network latency can make mining more fair for smaller miners. bosschallenge.xyz (applications due Dec 31) github.com/davidgumberg x.com/ChaincodeLabs x.com/lclhostresearch x.com/HBerkoe

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## Transcript

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