

What we’re about
LFDT Meetup groups have an informal relationship with LF Decentralized Trust and make up a key part of the LFDT ecosystem. Participation in a LFDT Meetup group is open to anyone--employees of a LFDT member company, LFDT contributors and developers, and people just passionate about distributed trust technology.
For more information about LFDT, please visit:
http://lfdecentralizedtrust.org/
For LFDT Meetup Guidelines, please visit:
http://meetups.lfdecentralizedtrust.org
To stay in touch with the latest LFDT news, sign up to our weekly newsletter:
https://www.lfdecentralizedtrust.org/newsletter-archive
Upcoming events
6
- Network event

ZK Learning Group: STARK
·OnlineOnline235 attendees from 139 groupsA learning group for zero knowledge and SNARK application development.
During the year we will systematically explore different aspects of zero knowledge and SNARK programming in application development.
Coordination of the learning group is in the discord channel of Linux Foundation Decentralized Trust: https://discord.com/channels/905194001349627914/1329201532628898036
Github repo for the lab:
https://github.com/LF-Decentralized-Trust-labs/zk-learning-group
In this session, we will kick-off 2026 and introduce basic concepts of STARK (Scalable Transparent Argument of Knowledge).1 attendee from this group - Network event

Programming Chaincode in Rust for Hyperledger Fabric
·OnlineOnline107 attendees from 140 groupsIntroducing the fabric-sdk-rust repo (https://github.com/LF-Decentralized-Trust-labs/fabric-sdk-rust) for writing chaincode for Hyperledger Fabric networks. Next to interacting with the network in Rust, the latest update also allows you to write chaincode in Rust, allowing writing full Rust based applications. This is a good session for anyone interested in developing with Hyperledger Fabric.
1 attendee from this group - Network event

AIA: An Open-Source Semantic Framework for Universally Interpretable Impact Data
·OnlineOnline48 attendees from 166 groupsOn 17 February 2026 at 08:00 AM Pacific, the LFDT CA2-SIG Standards Working Group will present the Anthropogenic Impact Accounting (AIA) ontology suite, an open-source semantic framework designed to address this challenge. Developed over four years through rigorous bi-weekly working sessions and multiple redrafting cycles, the AIA suite provides a coherent and extensible foundation for expressing impact data in a universally interpretable way.
The first public release of AIA, published on 16 September 2025, comprises four modular, W3ID-registered ontologies:
- claimont (https://w3id.org/claimont): Semantics for claims, claimants, evidence, and attestations
- infocomm (https://w3id.org/infocomm): Communication primitives for structured information exchange
- impactont (https://w3id.org/impactont): Foundational concepts for modeling impact relationships
- aiao (https://w3id.org/aiao): An integrated framework for anthropogenic impact accounting
Join us for an overview of how AIA can help your impact data become more interoperable, auditable, and reusable!
Past events
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