Nathan Freitas

I have achieved my algorithmic aspirations!

Oh loaner bikes. That is a great idea!

a collage of photos of new york city

Earlier this month, we hosted another installment of our verifiable photo scavenger hunt, as part of the Content Authenticity Summit 2025. Learn more about the game, our verification process, and the amazing players here: proofmode.org/blog/thehunt... #c2pa #contentcredentials #cai #casummit2025

Using Signal groups for activism Things are heating up. Millions of people are taking to the streets against Trump's rising authoritarianism. Communities around the US are organizing to defend against ICE raids, to protest Israeli ge...

I wrote about how to turn in-person meetings into Signal groups, how to manage large semi-public Signal groups while vetting new members, and how to sue announcement-only Signal groups, perfect for rapidly responding to ICE raids micahflee.com/using-signal...

... or is it #speederbikebus ?!

a bicycle decorated to look like a star wars speederbike

a stuffed yoda toy sitting on a sign that reads "Bike Bus"

a guy in a Mandolarian helmet from Star Wars with a bunch of kids getting ready to bike

This is the way... to school! Last #bikebus of the school year in #Brookline, teaching young rebels how to take their rightful place on our roads. #bikesafety #saferoutes #srts

It's bad out here for journalists. LA Times story gives a good sense of what it's been like for press in Los Angeles.

@clairewillett honestly the best marketing scheme in history is men successfully getting away with calling women the "more emotional" gender for like, EONS, because they've successfully rebranded anger as Not An Emotion 6:00 PM • Aug 12, 2020

once again I must tap my own sign

How to Save the Amazon A better place to buy your books. Support independent journalism with everything you buy. Free UK P&P on online orders over £25

Three years since the murder of Dom Phillips and Bruno Pereira. Their legacy remains strong.

Today, Dom’s book “How to Save the Amazon” will launch in London. guardianbookshop.com/how-to-save-...

Guardian also begins a new podcast series “Missing in the Amazon” www.theguardian.com/gnm-press-of...

Thanks, will be in touch!

Excited to be back at the latest iteration of this summit on Wednesday, helping facilitate conversations about open-source code and sharing our work on Proofmode, SimpleC2PA, and more www.contentauthenticitysummit.com

#casummit2025 #contentauthenticity #contentcredentials

Join the Hunt NYC at the #ContentAuthenticitySummit 2025
Use C2PA Content Credentials to play a scavenger hunt, defend reality, and win prizes!

proofmode.org/thehuntnyc2025

#cai #c2pa #proofmode #nyc #thehunt

China's 'colonial' schools erasing Tibet culture: Rights group About 1 million Tibetans are estimated to be enrolled in boarding schools, where they are reportedly subjected to forced assimilation and abuse.

"China's colonial boarding schools are meant to indoctrinate, not educate Tibetan children. Chinese authorities are deliberately taking our children away and disconnecting them from their roots." - Dr Gyal Lo

www.newsweek.com/china-tibet-...

NSF just cancelled ALL grants to Harvard researchers. That’s right - physics, astronomy, bio, CAREER - ALL. Professors won’t get paid. Postdocs won’t get paid. PhD students won’t get paid. This is insane!

If they can do this to Harvard, they can do this to your school.

Important insight and a call to action for technologists:

Happy to support #MASRTS Walk, Ride & Roll to school today in #Brookline - beautiful day to get to school without a car, and happy to celebrate kids and families who can and do so! #bikebus

If you are an existing or potential eyewitness in #India or #Pakistan to the attacks underway, please install ProofMode (proofmode.org/install/) to add important verification metadata to your photos and videos for press and evidence, to counter AI fakes. Please be safe. We all hope for peace soon.

Thank you so much to @petramolnar.com @faizapatel.bsky.social @maassive.bsky.social, Zahra Billoo of @cair-sfba.bsky.social, @nathan.freitas.net, and Raya Sharbain for speaking with me for this important article. It’s got practical tips and real insight into border enforcement.

The prompt asked to observe their expression, clothing, and the scene around them, without any guidance on what guilty or innocent meant, and to do this all "in the style of a Boston cop".

It often would respond with "better keep your eye on them" if it couldn't decide. The Boston references were pretty good based on the laughter.

A few very unscientific notes: it was fortunately not outwardly racist, but it would comment about lighting or "shadiness". It did not like hoodies, especially if they were up. It was ageist at times, with a bias towards kids and older people being innocent, and teens and adults being guilty.

Here is a STEAM project I worked up for my kid's school demonstrating (critiquing!) the potential use of AI multimodal models in law enforcement, border control, and surveillance...

#ai #machinelearning #computervision #steam #lawenforcement #surveillance #privacy #gpt4o #elevenlabs #openai

9 out of 10 people agreed! #ebikes #teslatakedown #boston #handsoff #bikebus

A Signal Truth: Posts that Conduct Public Business are Public Records. Good morning from Washington, where the cherry blossoms are at peak bloom and I am at peak lividity about public records. I wanted to share a short reflection today. More on Sunshine Week, soon. Yest...

A Signal Truth: Any posts that conduct public business are public records that must be archived.
civic-texts.ghost.io/a-signal-tru...
(Art by Ben Landgren for #SunshineWeek)

The bike rack, my sugar tolerance, and my heart are all full thanks to #BikeBus on Friday #brookline #srts #saferoutes

Empowering Mobile Journalism with CuttingRoom and C2PA – ProofMode CuttingRoom and ProofMode Team Up for Content Authenticity Support on iPhones

Exciting news on the "how to make life easier for app developers and journalists who care about defending reality" front proofmode.org/blog/cutting... #c2pa #contentcredentials #defendreality #ai #genai

Love my church #uu #unitarianuniversalist #allarewelcome

Today is the Transgender Day of Visibility From GLADD.org: Each year on March 31, the world observes Transgender Day of Visibility (TDOV) to raise awareness about transgender people. It is a day to celebrate the lives and contributions of trans people, while also drawing attention to the disproportionate levels of poverty, discrimination, and violence the community faces compared to cisgender (non-transgender) people. International TDOV was created in 2010 by trans advocate Rachel Crandall.

Today is the Transgender Day of Visibility

From GLADD.org: Each year on March 31, the world observes Transgender Day of Visibility (TDOV) to raise awareness about transgender people. It is a day to celebrate the lives and contributions of trans people, while also drawing attention to the…

Used to make sandwiches & someone would say "I'm using SNAP and can't buy a hot one"

I'd say, "tell me what you want and I'll ring you for the right price but the ticket will say its a cold sandwich."

We need millions of acts of subversion like this every day.

Almost wish I still made sandwiches.

We ride at dawn... spring #bikebus time, most Friday's to the end of the school year. #brookline #srts #saferoutestoschool #saferoutes