# Access control over Swarm content || András Arányi

- Channel: [Swarm](https://streameth.org/swarm)
- Date: 2024-06-20
- Duration: 22:34
- Topics: web3, blockchain, data privacy, access control, decentralized
- Watch: https://streameth.org/watch/667422b007f92b086c41fb65
- Download: https://vod-cdn.lp-playback.studio/raw/jxf4iblf6wlsyor6526t4tcmtmqa/catalyst-vod-com/hls/ae1037y7mo5ukmtm/1080p0.mp4

## Description

Within decentralized public data storage systems like Swarm, where data resides across multiple nodes, ensuring confidentiality, integrity, and availability becomes paramount.
The Access Control Trie (ACT) is a data structure that stores access control information for Swarm nodes. It is used to determine whether a node has permission to access a particular resource. The video discusses the application of Web 3 technology to ensure user control over data privacy and access. The speaker explains how their implemented feature, access control trie (ACT), within the Swarm platform allows content publishers to grant or revoke access to specific wallets, ensuring that only authorized users can view or decrypt content. This system aims to address common Web 2 issues such as centralization, data mishandling, security breaches, and censorship. The ACT feature is detailed in terms of its technical implementation within Swarm and its potential use cases, including gated community content, private group chats, confidential data sharing, and monetization opportunities for content creators in Web 3.

A live demo showcases how a publisher can grant access to a member wallet so they can view JSON data, potentially representing NFT metadata. The talk also touches on a partnership with Galaxy XYZ, a platform creating Web 3 communities that will use Swarm for self-serving control over data.

Questions from the audience cover technical aspects of ACTs, such as EVM compatibility and visibility of granted permissions. The response emphasizes the security design where access information does not leak outside intended parties.

The summary is for users interested in decentralized storage solutions, privacy control in Web 3 applications, and the technical mechanisms enabling secure data sharing within blockchain ecosystems.