brad
Bradley Rettler

ANNOUNCEMENT: Michael Kelly and I are thrilled to share the winners of the Student Bitcoin Research Prizes for the 2025-2026 academic year.
We got a number of good submissions, and these are the best of the best!
https://blossom.primal.net/e141f6b83fd30dab81d57a1626502f8be75048fba1e41eda5f03d02144186096.png

2026-04-08 18:40:52 CEST

Is @nprofile…uehg Satoshi? Here's all the evidence presented in the NY Times article. Seems to me that, while there are more pieces of evidence in support, they are on the whole significantly weaker than the evidence against.
(And this is just the evidence presented in an article arguing that he *is*.)
https://blossom.primal.net/0f51152151488bdda764012d75eb9d1835c3f5794dfec8f8fc0ab533a62abdbe.jpg

2026-04-08 00:26:49 CEST

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I had no idea what a gap there was in my internet subculture knowledge.

2026-04-07 23:49:45 CEST

Thanks to the education I received in Bedford from @nprofile…t86g, I have something to contribute to this conversation.
https://blossom.primal.net/0dbbf2a2b3b535c40cb557a6320401e08cf77cea391eaef097853efa9935701f.jpg

2026-04-07 23:46:31 CEST

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Since the reserve requirement is now 0%, this is doubly true.

2025-11-08 16:19:37 CET

“We have a mammoth task — to correct the corruption in the world. It is possible.” — @nprofile…dkpx
https://blossom.primal.net/8d47987271a0a71d5859c47193f1e27cf5557d145abe5fcc37337c641e6843fa.jpg

2025-05-31 23:25:50 CEST

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RESIST

2025-05-29 16:38:54 CEST

Oslo knows what’s up.
https://blossom.primal.net/8d2a6b75f3386b130b45e11cc0b696ba082f821df3814b96984458603792db83.jpg

2025-05-28 15:32:59 CEST

“What we want is for critical news stories not to compete with cat videos. Journalism was not designed for that.” — @nprofile…j3ex , on the importance of Nostr

2025-05-28 15:04:39 CEST

NOSTR getting its due at the Oslo Freedom Forum.
https://blossom.primal.net/860789c459c7e4c811ea526def24190d96c32c9ecb8a284297778e325ac920c1.jpg

2025-05-28 12:24:07 CEST

“Unfortunately, dictators are more united than democracies.” — Masih Alinejad

2025-05-26 12:03:56 CEST

“The courtroom has replaced the coup as the means of repression.”
— Parit Wacharasindhu, Thailand Move Forward Party
Oslo Freedom Forum

2025-05-26 10:37:40 CEST

“Nothing compares to bullies who wield state power to silence millions.” — Maria Sarungi Tsehai, Oslo Freedom Forum

2025-05-18 18:23:45 CEST

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Aw thanks for that. Andrew and I have been on THE Bitcoin podcast but @npub10af…0xj0 not yet…

2025-04-29 22:55:09 CEST

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One of the coolest things about nostr is that you can make something for free and if people find it valuable, they can zap you. I recommend zapping the absolute shit out of Calle‘s post. To encourage and reward him, and to encourage more development of similar things on nostr.
#nevent1q…xx43

2025-04-29 22:28:27 CEST

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I have spent more time in Bedford than most Brits…

2025-04-29 22:26:07 CEST

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🖐️

2025-04-21 14:59:25 CEST

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Math. It comes from math.

2025-04-21 05:57:51 CEST

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It’s a 1.7% annual increase in supply. Historically gold supply has grown between 1% and 4% annually.

2025-04-20 02:33:02 CEST

“Bitcoin is digital gold.”
In reality, bitcoin is unlike anything we’ve ever seen.
https://m.primal.net/QWdr.png

2025-04-13 17:26:25 CEST

Real Bedford have won another league! The women scored 11 goals to win 11-1 and move up to the third tier.
https://m.primal.net/QOHR.jpg

2025-04-12 19:11:29 CEST

Real Bedford have won the league! Three promotions in three years. Massive congratulations to @nprofile…mnr4 and Emma and everyone else involved.
https://m.primal.net/QNHA.jpg

2025-04-11 14:22:20 CEST

Alex @nprofile…hucz with some home truths. “Government adoption is inevitable and part of the plan.”
Another variety of the Trojan horse for freedom argument?
https://m.primal.net/QLqL.jpg

2025-04-11 14:20:20 CEST

Alex @nprofile…hucz with some home truths.

2025-04-11 14:19:32 CEST

It was a lot of fun giving this talk at MIT!
https://m.primal.net/QGfD.jpg

2025-04-07 00:32:09 CEST

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https://primal.net/e/nevent1qqs8rn9gp95c040zvsjqen7trvylyrs4guv8dygqc2x48prjz3jdu9gdhny9p

2025-04-06 17:40:48 CEST

The @nprofile…vtcc thesis.
https://m.primal.net/QGSg.jpg

2025-04-05 21:36:15 CEST

Support Core devs.
https://brink.dev/donate
https://m.primal.net/QFZS.jpg

2025-04-05 21:25:36 CEST

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So the men are going to win the league Saturday and the women are going to win the league Sunday and I’m gonna see both? Epic.

2025-04-05 20:12:49 CEST

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It’s live; scroll back. Also available after, I assume. https://www.youtube.com/live/TqxDr_SjAgg

2025-04-05 18:47:11 CEST

@nprofile…v2s3 and @nprofile…7r6u talking Tornado Cash and Samourai Wallet.
https://m.primal.net/QFRE.jpg

2025-04-05 17:16:21 CEST

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As long as there are some nodes and miners willing not to comply, it will resist censorship to *some* degree.

2025-04-05 16:46:15 CEST

Promoted to Full Professor!
https://m.primal.net/QFLY.jpg

2025-04-05 16:13:23 CEST

Nostr Panel @ MIT Bitcoin Expo
https://m.primal.net/QFKC.jpg

2025-04-03 23:18:55 CEST

Packing the essentials for CheatCode. See you in Bedford!
https://m.primal.net/QDPJ.jpg

2025-03-23 13:57:00 CET

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See you there!

2025-03-22 00:03:59 CET

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Gorgeous.

2025-03-21 22:53:52 CET

The University of Wyoming just released this video of some clips from an interview about the philosophy of bitcoin.
“Bitcoin is there for anyone who needs resistance money, or who feels like at some point in the future they might… If you think some day you may end up on the margins, you should at least know how to acquire and use bitcoin.”
https://youtube.com/shorts/QBummURtbEc?si=L9dQskmcuBQStTtP

2025-03-10 17:55:32 CET

Had a great time at Boise State making the case for Bitcoin to an audience of computer scientists, business majors, philosophers, and more.
https://m.primal.net/PbAT.jpg

2025-02-19 17:51:15 CET

Sometimes people say, "I don't care; I've got nothing to hide." We should not so willingly cede our privacy. For in so doing, we give up an important freedom -- the freedom to decide what we disclose about ourselves.
Here's how we put it in 𝑅𝑒𝑠𝑖𝑠𝑡𝑎𝑛𝑐𝑒 𝑀𝑜𝑛𝑒𝑦:
https://m.primal.net/PDEB.png

2025-01-25 02:14:14 CET

Badass of @npub1sg6…f63m to repost this.
#note18dz…7y5s

2025-01-22 22:07:50 CET

My (non-bitcoin) book with @nprofile…cpn2 is available for free for the next week or so. Download it!
https://www.cambridge.org/core/elements/problem-of-divine-personality/B43C9DACCE8F00CCCAF1DBBA07C6C0BA

2025-01-02 19:07:22 CET

Academic bitcoin work needs a change in direction. Over half of papers published are price prediction models.
There is so much more to Bitcoin than its price! Privacy, inclusion, consensus, environment, energy…
The UW Bitcoin Research Institute aims to change the discourse.
https://m.primal.net/NPLU.jpg

2024-12-23 20:41:03 CET

Ummmm…..
https://m.primal.net/NEac.jpg

2024-12-23 19:36:16 CET

1st place: $500
2nd place: $250
3rd place: $150
4th place: $100
5th-8th place: $2,378,898.50
https://m.primal.net/NEXk.jpg

2024-12-15 16:40:29 CET

https://progressivebitcoiner.substack.com/p/bitcoin-a-lifeline-for-everyone-not
https://m.primal.net/Mwvx.jpg

2024-11-20 18:03:15 CET

Fascinating result. Banning bitcoin mining in low-emission countries raises global carbon emissions.
But it makes sense: it incentivizes more mining in high-emission countries.
https://m.primal.net/McUI.jpg

2024-10-28 01:13:56 CET

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I’m an avid scifi reader. Would love to be considered as a beta reader.

2024-10-27 17:44:16 CET

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I suspect you’re having a hard time with the logic of conditionals.

2024-10-27 17:07:08 CET

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Because I don’t think you have to believe democracies are evil to believe that the Samourai devs did nothing wrong.

2024-10-27 16:23:45 CET

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I wrote a pro-CoinJoin article. In that article, I pointed out the hypocrisy of those democratic governments, given the use of CoinJoins for pro-democracy, anti-authoritarian protests. CoinJoins are good. Democracies that are against them are hypocritical. I stand by both of those claims.

2024-10-27 04:02:44 CET

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You don’t think they’d like my explicit defense of them? Or did you just read the title?

2024-10-26 00:24:05 CEST

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Helping democracy *protests*

2024-10-24 02:24:18 CEST

CoinJoins Help Democracy Protests
(originally in Forbes)
Inspired by @npub17xv…c9as and @npub1trr…hdpu
Hundreds of activists around the world use bitcoin for its censorship resistance properties — rather than speculative trading. From Nigeria to Russia, activists across the globe see bitcoin as a tool for promoting pro-democracy protests despite financial repression.
Financial repression and nonviolent resistance in a variety of dictatorships were a few of the topics of discussion at the Human Rights Foundation’s Global BitcoinBitcoin -1.1% Summit on Thursday, October 3. Protests usually need money to function, and so seizing cash and freezing bank accounts is an effective way to neutralize citizens’ ability to fight back against dictators before they can become too organized. Often this financial repression is enough to force the end of the protests, due to the difficulty of organizing protests without any money, and organizers’ uncertainty about their survival without financial access.
Bitcoin cannot be seized, because it is not a physical asset residing in space. It is a digital asset, residing at an address in the bitcoin blockchain. In order to use bitcoin, one need only have a 64-character private key to that address, or a 12-word (or 24-word) phrase associated with a wallet. Private keys are too long to memorize for most people, but a piece of paper on which a private key is written is much easier to hide than physical cash. Bitcoin also cannot be frozen, because there are no authorities on the Bitcoin network that have the power to block or stop transactions. Even if there is an address that a person wants to stop from transacting on the bitcoin network, there is nothing they can do about it.
These features of bitcoin are often fretted over by American authorities bemoaning their inability to prevent foreign adversaries from transacting using bitcoin, despite the American authorities’ best efforts to sanction them. But of course, a network that resists censorship by foreign authorities of necessity resists censorship by American authorities. This is a price we must be willing to pay for the sake of democratic activists worldwide. According to the Varieties of Democracy Institute at the University of Gothenburg in Sweden, 5.7 billion people – 72% of the world’s population – live under authoritarian rule.
When financial repression fails, dictators turn to the second tactic – arrests, often followed by torture. One might think that using bitcoin makes it difficult to find those responsible through the protests – at least through their financial transactions. But this isn’t the case. Bitcoin transactions are recorded on the ledger, and the ledger is public. Anyone can download it, view it, and analyze it. And while the ledger doesn’t contain people’s identities or locations, it is subject to analysis and often yields identifying information. This, of course, can be disastrous for anti-authoritarian pro-democracy protesters and activists. The greater the resources of the dictatorship, the greater the risk of using bitcoin. It’s better than banks, to be sure, but it’s a risk nonetheless.
There are ways to make bitcoin transactions more private. One is CoinJoins. In a CoinJoin, users jointly construct transactions where their coins are combined and then sent out to various addresses. None of the destination addresses is connected to any of the originating addresses. Nobody knows who else is CoinJoining with them. Since it is an automatic protocol, no coordinating authority has custody of the bitcoin involved; each user retains control of their own coins throughout.
Because of CoinJoins, a person can send money to an activist or protestor without anyone knowing who sent it. A Russian national can send bitcoin to the Anti-Corruption Foundation through a CoinJoin without Putin’s government knowing – even if Putin’s government knows who the originating address belongs to and who the final destination address belongs to. Of course, in such cases, multiple rounds of CoinJoining is advisable.
Because of the censorship-resistance of bitcoin, it is a favorite tool of protestors. But it is not private enough to make them comfortable that they won’t be identified and arrested. So they turn to the privacy-preserving features of CoinJoins.
CoinJoins enable pro-democracy protesters fighting against dictators to use censorship-resistant money – bitcoin – more privately. People can hide their identities from those hunting them. This is something that should be encouraged and supported. But some governments – democratic governments, even – have taken a different view. They’ve said that CoinJoins violate anti-money-laundering rules. The U.S. government arrested the developers of a privacy-focused wallet called Samourai Wallet that used CoinJoins by default, charging them with having “facilitated more than $100 million in money laundering transactions from illegal dark web markets.”
But cybersecurity, AML, anti-terrorism laws are used by authoritarian goverments to target pro-democracy activists or opposition leaders, says the Open Dialogue Foundation. For example, Erdogan’s government recently arrested a Turkish student on terrorism charges for participation in religious services. India arrested leaders of the Aam Aadmi opposition party for supposed financial crimes. Azerbaijan arrested opposition leader Gubad Ibadoghlu for production, acquisition or sale of counterfeit money. In Venezuela, presidential candidate Edmundo Gonzalez has been arrested for terrorism after an election he claims he won. Tunisian opposition leader Lotfi Mraihi was arrested on suspicion of money-laundering.
Leave aside the fact that the Samourai developers built a non-custodial wallet, never taking custody of any user funds, and so weren’t transmitting money. The fact remains that CoinJoins are a vital tool for human rights and pro-democracy protests in dictatorial regimes. Alex Gladstein of the Human Rights Foundation estimates that “dozens of protest movements on five continents impacting millions of people since 2020 have used bitcoin as part of pro-democracy protests.” He adds that “HRF supports Bitcoin privacy tools and recognizes the power of privacy-preserving collaborative transactions for human rights defenders – especially ones operating under authoritarian regimes.” CoinJoins are morally neutral. Chainalysis estimates that in 2023 about $25 billion in value was used by illicit actors, and under $2 billion went through some mixing like CoinJoin.
CoinJoins provide privacy through obscurity, and so work best when there are a lot of people CoinJoining. The more developers, coordinators, and users there are, the more privacy protesters can achieve. Most Americans are not on the ground protesting against dictators, but we can help the cause by coordinating CoinJoins and CoinJoining ourselves. Democratic governments could encourage that as a way of peacefully exporting democracy without costing any tax dollars.

2024-10-24 02:09:53 CEST

Bitcoin takeover of Princeton University! Open to the public. Come join the fun. Very excited to hear what a 19-year veteran of the Bank of Canada thinks of our book.
https://m.primal.net/LgDi.jpg

2024-10-22 19:18:57 CEST

Great review of resistance.money out today : https://blockworks.co/newsletter/daily/issue/post_0f0bc349-658d-4e06-81ee-32a0743179ef
https://m.primal.net/Legn.jpg

2024-10-20 01:51:29 CEST

Back where we belong, between Plato and Aristotle.
https://m.primal.net/LbYo.png

2024-10-16 18:30:38 CEST

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Doesn’t matter. It’s non-transferable.
https://m.primal.net/LXjB.png

2024-10-14 20:25:57 CEST

Me: we are supposed to be what we love for Halloween? If so, I’ll have to be Mama.
My son: no, you’d be a Bitcoin.

2024-10-14 02:39:32 CEST

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The sunrises and sunsets are one of the best parts of Laramie. Here’s a sunrise. https://image.nostr.build/896b60bbb2d0466095ad5fdf1fdaad489350eba14bfae99d23c6b09396fe67dc.jpg

2024-10-14 02:34:10 CEST

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https://m.primal.net/LVPz.jpg

2024-10-14 02:32:45 CEST

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I was catching up on some talks I missed and your work on the desk was really impressive!

2024-10-14 01:28:36 CEST

Huge thanks to everyone who came to Bitcoin Amsterdam. Speaking on the main stage is absolutely nothing like the philosophy conferences I’ve spoken at for the first decade of my academic career! @npub1yez…awc7 and @npub10af…0xj0 and I reflect quite regularly on how surreal our lives have become — and y’all’s support has everything to do with it. Please keep reading and sharing our work at resistance.money, and we’ll keep producing as much as we can!
(Photo credit: @npub1dnz…x52h)
https://m.primal.net/LVOM.jpg

2024-10-09 18:47:58 CEST

COINJOINS PROTECT DEMOCRACY
My latest in Forbes, inspired by my experience at @npub17xv…c9as's Global Bitcoin Summit.
https://www.forbes.com/sites/digital-assets/2024/10/09/how-bitcoin-coinjoins-facilitate-pro-democracy-protests/

2024-10-09 14:10:14 CEST

“If we can capture the methane of just 35 landfills and use it to mine bitcoin, that mitigates enough methane emissions for Bitcoin to be emissions-negative.” — @npub13lk…lpsy

2024-10-09 14:02:49 CEST

@dsbatten speaking to a packed room about the academic literature on bitcoin and the environment. All seats filled and 75 people standing.
https://m.primal.net/LPsN.jpg

2024-10-09 11:34:47 CEST

#nostr representation on the main program at Bitcoin Amsterdam.
https://m.primal.net/LPlv.jpg

2024-10-08 16:37:44 CEST

Thursday, 1pm, Bull Arena
BEYOND RESISTANCE MONEY
https://m.primal.net/LOuJ.jpg

2024-10-08 14:07:22 CEST

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Bitcoin Amsterdam!

2024-10-08 13:38:17 CEST

Arrived in Amsterdam!
https://m.primal.net/LOlF.jpg

2024-10-07 19:44:56 CEST

“We were hesitant about there being too much overlap between bitcoin and nostr. The problem is: bitcoin is dead good, and nostr is dead good, and they go together like bread and butter and it’s delicious.” — @npub1c87…8avm on @npub14mc…frlx

2024-10-07 18:25:12 CEST

I spent last week at the Global Bitcoin Summit with human rights activists and pro-democracy protestors from over 60 countries -- Serbia, Zimbabwe, India, Nicaragua, Togo, Venezuela, Gaza, Ukraine, Russia, Rwanda, Kenya, Jamaica, Suriname, Nigeria, Afghanistan, Indonesia, Brazil, Peru, Italy, Lebanon, Syria, Guatemala, North Korea, Tanzania, Uganda, Thailand, China, Iraq...
A repeated theme was that the first method used by dictators to quell protests is financial; they cut off bank accounts and financial services, aiming to starve the protestors of resources and force them to give up.
They then shared how protestors are using bitcoin to circumvent these attempts at financial repression. With bitcoin, they collect money from people around the world and quickly distribute it where it's needed most -- and all out of the watchful eyes of the respective dictatorial regimes.
They shared strategies with each other, and gave those of us who live in democracies a stark look at what it's like to fight on the ground.
It’s reaffirmed by commitment to bitcoin as a global monetary network that brings freedom to those who need it most. Bitcoin is https://resistance.money
https://m.primal.net/LNvW.jpg

2024-10-05 17:01:20 CEST

😍
#note1ae6…q24e

2024-10-05 16:07:24 CEST

Bitcoin is peer-to-peer, eliminating the need for transactional middlemen like Visa, who facilitate transactions for a price.
That seems like something the Department of Justice should be in favor of, given their recent lawsuit filing against Visa.
https://m.primal.net/LLzi.jpg
https://m.primal.net/LLzj.jpg

2024-10-05 00:35:53 CEST

I’ve started writing a monthly article for Forbes!
This month’s: Bitcoin’s volatility is good, actually.
https://www.forbes.com/sites/digital-assets/2024/09/25/bitcoins-volatility-is-its-strategic-edge/

2024-10-03 21:41:26 CEST

I think we know how this is gonna go. 🥱
https://m.primal.net/LKKp.jpg

2024-08-15 17:42:39 CEST

ll be at @npub1key…lt3h with @npub1wlk…qwhy from @npub1zhq…h0dw tonight at 6! If you’re in NYC, show up. We will have signed copies of Resistance Money to trade for donations to HRF.
https://m.primal.net/KAaW.jpg

2024-07-31 23:39:54 CEST

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No need for trust. www.uwyo.edu/bitcoin

2024-07-28 18:37:09 CEST

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🙏

2024-07-28 18:12:17 CEST

ANNOUNCEMENT: The University of Wyoming has established the UW Bitcoin Research Institute. uwyo.edu/bitcoin
The BRI aims to produce high-quality peer-reviewed publications about bitcoin from all academic disciplines.
First act: hiring @npub1yez…awc7!
Much academic bitcoin research is quite poor, because it's done by people who don't understand bitcoin.
Mora et al predicted "bitcoin alone could push emissions 2 degrees".
They failed to account for the difficulty adjustment *and* didn't know there was a block size cap!
Others like Taleb’s infamous "Bitcoin Black Paper" are unaware of Layer 2s like Lightning, and others are unaware of the supply cap -- perhaps bitcoin's most distinctive feature. Others make faulty assumptions about bitcoin user demographics.
These mistakes make their way into journalism, and policy. Bitcoin is multi-faceted in theory, and even more so in practice. Journalists can't be experts, so they rely on academics. Too many of those academics have let them down.
The good news is that there is good academic research on bitcoin. Work by Will Luther, @npub18wg…r2wn , @npub12lz…ntw2 , @npub10af…0xj0 , Matthew Ferranti, @npub1ws6…xzeg and others understands and explains bitcoin very well.
But for academics interested in bitcoin, the incentives often don't line up. Few advisors will let their advisees focus on bitcoin, so bitcoin projects must be side projects. And without advisor or community support, these projects are rarely taken on.
The Bitcoin Research Institute fixes the incentives. We provide a community who can support scholars and give critical feedback on their projects, and we provide funds for travel and lodging.
We're removing barriers for scholars who want to work on bitcoin.
More academic work on bitcoin should be done by people who understand bitcoin. The BRI aims to produce that work, which will filter up to journalists and policymakers.
The University of Wyoming is the perfect place for this, with Sen Lummis, @npub1uyz…8632 , State Sen Rothfuss, Law School Dean Julie Hill, Steve Lupien, bitcoin miners using all kinds of energy like @npub1k7t…8edl , a School of Energy Resources, School of Environment and Natural Resources...
The UW Bitcoin Research Institute is a 501c(3) nonprofit. Because of @npub1uyz…8632 , the University -- and by extension the BRI -- can accept bitcoin directly. And UW allocates 4% of our investments to bitcoin, so if you donate bitcoin to the BRI, we will NOT sell it.
If you're a scholar and you want to be involved, my DMs are open!
If you're a journalist and you want to learn more, my DMs are open!
If you want to support our work, you can do so here: https://www.givecampus.com/campaigns/49172/donations/new

2024-07-20 04:58:25 CEST

I’m stoked for this! If you’re in or near NYC, come join us! #note1dvr…cj9h

2023-03-01 04:26:07 CET

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Reply to this reply 🤫⚡️⚡️⚡️⚡️

2023-02-27 23:09:16 CET

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https://btcpolicysummit.org

2023-02-27 23:08:02 CET

I’m speaking at the Bitcoin Policy Summit in DC about what sets Bitcoin apart from all other cryptocurrencies. I’ll be joined by a few dozen other bitcoiners talking about mining, authoritarianism, CBDCs, national security, and the like.
To request an invitation or support the summit, visit http://btcpolicysummit.org

2023-02-21 01:18:13 CET

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Roald Dahl changed it himself.

2023-02-20 15:53:23 CET

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In the original 1964 edition, the Oompa Loompas were “a tribe of 3,000 amiable black pygmies who have been imported by Mr. Willy Wonka from ‘the very deepest and darkest part of the African jungle where no white man had been before.’ Mr. Wonka keeps them in the factory, where they have replaced the sacked white workers. Wonka’s little slaves are delighted with their new circumstances, and particularly with their diet of chocolate. Before they lived on green caterpillars, beetles, eucalyptus leaves, ‘and the bark of the bong-bong tree.'”

2023-02-19 16:50:33 CET

#Bitcoin provides a novel combination of old and new answers to questions about financial censorship, privacy, and inclusion. It also comes with brand-new tradeoffs in terms of security and energy use.
That’s what we discuss in resistance.money/book