I've been working on dual citizenship for a while βΒ trying to bridge geospatial data technologies and the decentralized web.
I gave a talk today at @foss4gna.bsky.social β here it is π
β¨ Astral: A Spatial Extension for the Decentralized Web
www.youtube.com/watch?v=o9CC...
04.11.2025 19:57 β π 2 π 0 π¬ 0 π 0
Tom MacWright on Shutting down Placemark
As a person who resists the hubris and posturing so common in tech, I appreciated @macwright.comβs openness + honesty in this podcast.
As the solo founder of an open source geospatial project (and a Placemark user), I also found the content and insights invaluable.
πππ
pca.st/episode/703c...
05.10.2025 10:00 β π 2 π 0 π¬ 0 π 0
This is where weβre at, I guess β¦ the best minds of our generation, all the frantic madness, the resource and ingenuity, and this is the outcome.
The incentives are so strong β the pattern feels intractable. Iβm reminded of Diogenes the Cynic.
02.10.2025 07:03 β π 0 π 0 π¬ 0 π 0
Notes on Location Proofs - John X
An exploration of proof-of-location systems, their technical implementations, privacy implications, and potential applications in Web3 and beyond.
My work focuses on next-gen geospatial data technologies for the open internet.
Lately Iβve been researching proof-of-location systems with collaborators at UMD.
This new post outlines our current thinking about a new framework for multifactor location verification: www.x25bd.com/posts/notes-...
13.09.2025 09:30 β π 2 π 0 π¬ 0 π 0
- Peer-to-peer data storage systems (what I sometimes call "spatial registries") offer interesting new ways of managing geospatial data.
One very interesting use case: self-sovereign policy zone management.
Another: content-addressed climate datasets.
Lots more to say on this ...
26.02.2025 12:03 β π 0 π 0 π¬ 0 π 0
- Verifiable geocomputation systems can similarly improve trust and reduce compliance costs.
I'm especially excited about how these two pillars can help us build systems to govern autonomous machines β including safeguarded AI.
www.lesswrong.com/posts/P8Xcbn...
twitter.com/soona/status...
26.02.2025 12:01 β π 0 π 0 π¬ 1 π 0
You can dive into what I mean in the paper, but key highlights:
- Proof-of-location systems based on principles of self-sovereignty and verifiability can improve trust in location claims, with many knock on effects
26.02.2025 11:57 β π 0 π 0 π¬ 1 π 0
I'll share here first β a collaborator and I have a vision paper on the decentralized geospatial web in review.
Preprint is available here:
Top line β the geospatial web works well, but there are a few places where Web3 design principles show promise to expanding what's possible.
osf.io/bg2uq_v1
26.02.2025 11:55 β π 2 π 0 π¬ 1 π 0
I just had a thought β maybe the opposite of perfect is honesty.
07.02.2025 11:43 β π 0 π 0 π¬ 0 π 0
I've been meaning to put pen to paper and write down what I've been learning over the past 6+ years, researching the intersection of geospatial + the decentralized web ...
This week it comes together βΒ focused on location proofs, verifiable geocomputation and decentralized data storage. More soon.
28.01.2025 16:04 β π 1 π 0 π¬ 0 π 1
How to be More Agentic
On a supposedly difficult thing
My friend @leonebaron.bsky.social made me aware of this post from @cate.bsky.social β lots of great advice to channel.
Especially coming back to the roiling world of knowledge work in 2025 after burning out, I'm prioritizing good + durable habits.
usefulfictions.substack.com/p/how-to-be-...
27.01.2025 12:02 β π 0 π 0 π¬ 0 π 0
x.com
It's worth noting that Vincent Weisser is one of the OGs in DeSci (Molecule ecosystem), with a deep background in the design principles of decentralization.
x.com/vincentweisser
20.01.2025 16:20 β π 1 π 0 π¬ 1 π 0
Training AI models might not need enormous data centres
Eventually, models could be trained without any dedicated hardware at all
Did you see this article in the Economist last week?
I'm far from an expert on the pros and cons of different training designs, but at a glance decentralized (well, distributed) training offers quality improvements not in spite of, but *because of* inefficiencies.
www.economist.com/science-and-...
20.01.2025 16:17 β π 1 π 0 π¬ 1 π 0
Retrospective β Deep Learning System Design - John X
Reflections on MLX's Deep Learning System Design coding immersive.
... audio processing and more.
www.x25bd.com/posts/retros...
In 2025 I'll be doing research + product innovation using AI and Web3 tools and patterns. More to come ...
20.01.2025 16:13 β π 0 π 0 π¬ 0 π 0
... and next generation geospatial data infrastructure.
The last few months of 2024, I reconnected with my roots in data science β I went through an immersive program catching up on the latest developments in AI and machine learning. Vector embeddings, transformers, computer vision, MLOps ...
20.01.2025 16:11 β π 0 π 0 π¬ 1 π 0
I've been interested in geospatial for a long time βΒ my first brush with machine learning was in 2009, studying convolutional neural networks in a remote sensing course I took.
Since then I've worked on location-based apps, geospatial analysis pipelines, interactive map visualizations ...
20.01.2025 14:41 β π 0 π 0 π¬ 1 π 0
But while I believe Web3 promotes and important set of design principles, I know it's not a panacea.
Before my foray into the space β and in the past year β I've spent a lot of time trying to understand, and to some extent shape, patterns of human behavior using geospatial data technologies.
20.01.2025 14:39 β π 0 π 0 π¬ 1 π 0
Astral
At Astral we are building tools to enable the location-based decentralized web
I'm still working in Web3 βΒ I lead Astral, an open source R+D studio building tools + technologies for the decentralized geospatial web.
I'll share more about what we do in due course, I'd love to get feedback and critique here.
astral.global
20.01.2025 14:37 β π 0 π 0 π¬ 1 π 0
About a year ago I left my full time role at Toucan (lots of reasons, mostly personal β I was burnt out). 2024 involved a lot of sense-making and tending to the things that tended to get de-prioritized while I was wrapped up in the "founder" lifestyle. Lots to say here β I'm biased towards openness.
20.01.2025 14:36 β π 0 π 0 π¬ 1 π 0
Regarding work, I spent the past 5(ish) years at the frontier, looking at how emerging tech (especially Web3) could help us respond to the climate breakdown more effectively.
I have been deeply involved with @kernel0x.bsky.social, co-founded Toucan Protocol, co-chaired a WEF working group and more.
20.01.2025 14:34 β π 1 π 0 π¬ 1 π 0
I grew up in the US and am an American, though I've spent the past 6+ years living in the UK, and just recently took steps towards dual citizenship.
I love the community spirit I experience in the US, and the extraordinary landscapes. In the UK (esp. London), it's the cultural and historical depth.
20.01.2025 14:29 β π 0 π 0 π¬ 1 π 0
To say a bit more, I lead with where I have spent my time because my sense of place is core to how I experience the world.
Roots are early experiences exploring mountains + lakes in America. These days, I've expanded β most of my tech work incorporates "geospatial" in one way or another.
20.01.2025 14:27 β π 0 π 0 π¬ 1 π 0
The requisite "hello new social platform" post βΒ for those who don't (and do!) know me:
Hi. I'm John. I grew up in Colorado + live in London. My work centers around emerging (digital) technology and how it can improve lives + well-being. I love to snowboard, sail, + (slowly) make progress on piano.
20.01.2025 14:23 β π 1 π 0 π¬ 1 π 0
It's as good a time as any to start speaking ...
20.01.2025 14:20 β π 3 π 0 π¬ 0 π 0
Design engineer playing with AI and hacky prototypes @githubnext.com
Adores digital gardening, end-user development, and embodied cognition. Makes visual essays about design, programming, and anthropology.
π London
π± maggieappleton.com
Matthew is just this guy, you know?
Remote sensing, open-source and geospatial @element84
Email salesman at Platformer.news and co-host at Hard Fork.
Enrich your stories with charts, maps, and tables β interactive, responsive, and on brand. Questions? Write us: datawrapper.de/contact-us
Author, deputy editor at The Economist, maker of pizzas, drummer, gamer, history nerd
AI correspondent at the Economist. I write about it, that is. Iβm still human. One of literally dozens of people online who is not American.
There are so many essential problems to solve in the world, why limit yourself to smart juicers and photo filters?
mastodon @n8fr8@ohai.social
Also me: https://nathan.freitas.net https://guardianproject.info
https://tibetaction.net
writes, bikes, makes val.town, writes macwright.com, open source, geo, music, sewing and other stuff.
twitter archive: https://bsky.app/profile/archive.macwright.com
Researcher. Cities, urban morphology, human geography & spatial data science. Open source software developer. #python #cities #open_science
https://martinfleischmann.net
Associate Professor of Spatial Data Science at McGill University. Place β’ Mobility β’ Privacy.
https://grantmckenzie.com
Public Access to Public Data is a Public Good. We want to ensure our data are not gone forever. Read more about our efforts: https://www.datarescueproject.org/press/
Bartlett Centre for Advanced Spatial Analysis | @thebartlettucl.bsky.social | Website: ucl.ac.uk/bartlett/casa
Scalable Sustainable Land Use + Nature Tech
Data Engineer @ Land App
Ex: food-tech Founder, Satellite Apps Catapult + CXL intern
Bringing AI to offensive security by autonomously finding and exploiting web vulnerabilities. Watch XBOW hack things: https://xbow.com/traces
I bloop about the politics of technology and host the Computer Says Maybe podcast: https://www.themaybe.org/podcast
AI researcher at XBOW. Security, RE, ML. PGP http://keybase.io/moyix/