Sjors Provoost
sjors@sprovoost.nl
Physicist turned bitcoin developer aka "shadowy super-coder", author of Bitcoin: A Work In Progress
379 Following
4.1k Followers
npub1hvw02
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10h ago
After his death, his son inherited the garden — and quickly lost it to gambling.
A Chinese proverb captures this: 富不过三代 — “Wealth doesn’t last beyond three generations.”
How do Bitcoiners plan to break this cycle and preserve generational wealth?

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Sjors Provoost
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1d ago
* = even with the €0,12 energy tax. Yes, you have to pay a tax even on negatively priced electricity. Yes, you have to pay VAT over this tax. Because government. They do build nice roads though, no potholes.

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Sjors Provoost
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1d ago
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npub1vadcf
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1d ago
Replying to @npub1q6mcr
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Sjors Provoost
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1d ago
That proves you saw the block but chose not to accept it. As opposed to just having missed it, as with a typical stale block.
Call it a Bad Uncle block?
You could even do this with weak blocks (reduced proof of work) if all you have is a BitAxe.
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Sjors Provoost
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1d ago
https://www.reddit.com/r/shanghai/comments/1k7lfib/comment/mp4frum/
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Sjors Provoost
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1d ago
That said, the El Salvador gulag still has a lower death rate than Nazi concentration camps - so let's not get too carried away?
https://www.theatlantic.com/magazine/archive/2025/05/trump-executive-order-lawlessness-constitutional-crisis/682112/
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npub157y6g
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2d ago
I'm somewhat of a poet myself.
Read about Ledger Bitcoin app's support of MuSig2 in this blog post - written with the legend Yannick Seurin in person.

https://www.ledger.com/blog-musig2-ledger-bitcoin-app
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Sjors Provoost
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3d ago
https://www.bnr.nl/nieuws/mobiliteit/10572357/motorrijtuigenbelasting-niet-meer-op-basis-gewicht-maar-oppervlakte
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Sjors Provoost
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3d ago
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Sjors Provoost
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4d ago
Het probleem is, als je dit soort dingen zegt tegen een onderzoeker, wordt het als een stroman geplakt op een hele groep.

Sjors Provoost
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4d ago
Replying to @Sjors Provoost
Survivorship bias? Ze spreken tenslotte met huidige crypto bezitters, niet voormalige bezitters die inmiddels weten wat phishing en roofovervallen zijn.

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npub1c2d9m
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5d ago
npub1ejxsw
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5d ago
Replying to @USER

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Sjors Provoost
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6d ago

Sjors Provoost
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6d ago
Replying to @Sjors Provoost
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Sjors Provoost
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6d ago
#scalloped
npub1yaul8
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6d ago
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Sjors Provoost
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6d ago
npub1u8lnh
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1w ago
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Sjors Provoost
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6d ago
npub1nccwj
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6d ago
It looks more like someone testing the pay-in-coinjoin feature than a real "donation". The curious thing here is that the donor used a standard denomination, something that doesn't make any sense here because the address is already known.
I can imagine four reasons for this:
1. Making sure nobody will ever send money to El Salvador using Pay-In-Coinjoin tx again. This is because the coordinators prevent address reuse and then it will be impossible to pay to the same address again. It could be a defense mechanism.
2. Creating a link between El Salvador's bitcoin address and Lazarus addresses. I'm not a chain analysis company and I have no way to know whether or not that tx includes Lazarus funds, but if so, that could be the intention (silly).
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npub12hcyt
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1w ago
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npub1art8c
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1w ago
Replying to @npub1qdsjk
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npub1pu5pj
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1w ago
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Sjors Provoost
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1w ago
npub1renau
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1w ago
https://www.thetimes.com/uk/politics/article/liz-truss-social-media-platform-free-speech-dh0wf69sp
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npub12rv5l
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1w ago
Post on X can go viral with thousands of likes and I only have crap comments. Real bitcoiners I care about don't engage much at all. Most replies are AI bots summarizing the OP.
In contrast, nostr feels like an actual social network. I say gm, people say it back. I post an edgy opinion and people actually tell me what they think. I can use all the words that I want without getting nerfed because devs are too lazy to implement algoritnms. I get my news here via a bunch of bots I follow. I have a raw thought and I post it without thinking about it too much and no single company monopolizes and profits from my speech it by sucking up my soul.
Things are good.
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Sjors Provoost
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1w ago
npub1sg6pl
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1w ago
we defy borders, hierarchies, and middlemen.
code is our passport. access is our right.
permissionless technologies defend freedoms.
they scale trust without institutions.
they enable action without approval.
no one asks to speak.
no one begs to build.
no one waits to change.
we build systems that can't be shut down.
we create tools that serve all, not the few.
we write code that liberates, not controls.
this is not just infrastructure.
it’s a revolution—
silent, sovereign, unstoppable.
we don’t ask.
we deploy.
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Sjors Provoost
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1w ago
Replying to @npub1xtscy

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npub1sxqxj
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1w ago
Replying to @npub1mznwe

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Sjors Provoost
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1w ago
There've always been scary incidents occasionally, but the frequency has increased and the government is actively fear mongering.
My former university of Utrecht is now giving staff burner laptops for conference travel. That's the kind of stuff one normally does for China.
npub1gcxzt
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1w ago
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Sjors Provoost
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1w ago

npub1tjkc9
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1w ago
Loading note
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npub1h0fd5
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2w ago
npub1gz7uc
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2w ago
https://x.com/MayaPar25/status/1910435668951511294?t=C8K9Zwa8PAFgjqjIQfgKwA&s=19
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Sjors Provoost
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2w ago

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Sjors Provoost
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2w ago
1. Executive Order to explain to the public how these things are only used by bad hombres
2. OFAC will add them to their list. Clearly anyonecanspend is Communist property - but Supreme Court might bikeshed the SegWit issue
3. A soft fork, but we can't wait for Bitcoin Core, they're too fucking slow
#GreatConsensusCleanup
Also I couldn't find the CIA headquarters.
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Sjors Provoost
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1mo ago
Keep calm and:
1. Delete at least one account per week;
2. Use more open source stuff; and
3. Stack sats
- sent from iPhone, something Augustine said
npub1dergg
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1mo ago
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Sjors Provoost
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3mo ago
In Part I he clearly illustrates how the witch hunt insanity was made possible by the printing press, without any algorithm involved. Then in Part II he considers the role of Facebook algorithms in the Myanmar genocide. He uses this to illustrate how AI changed the game, because for the time a non-human intelligence decided to promote one thing and not another thing. But how is that different from the non-human intelligence of market forces in the Middle Ages that spread the Hammer of Witches?
But it gets worse a few pages later, though maybe I'm just being my usual hardcore AI boomer... He cites a safety study where ChatGBT tricked a human worker on
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Sjors Provoost
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Dec 19, 2024
1) Legal reforms will make acceptance of Bitcoin by the private sector voluntary.
2) Taxes will only be paid in U.S. dollars and
3) the government’s participation in the crypto e-wallet (Chivo) will be gradually unwound.
4) For the public sector, engagement in Bitcoin-related economic activities and transactions in and purchases of Bitcoin will be confined
(1) and (3) seem fine, you could see them as bootstrapping measures. Now let's see if companies keep accepting it.
(2) is dubious, the treasury could just exchange BTC to USD to manage the volatility. But is this really about US dollar hegemony feeling threatened, or something more "mundane" such as:
a) the IMF doesn't trust the El Salvador government to handle this competently; or
b) a desire to keep surveilling money flows by forcing them through the fiat banking
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Sjors Provoost
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Dec 8, 2024
But then all payment options are mass surveillance tools.
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Sjors Provoost
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Nov 24, 2024
I can only speak for myself here. Part of the problem is that the current proposals don't excite me, yet. That's even after spending time at the op_next conference.
SegWit (which happened before I was involved) brought the promise of Lightning. Taproot lets you build cold storage with hidden fallback options.
I'm still waiting for MuSig2 to finally have broad adoption, something that's higher on my review list than new soft forks, and I barely get to it.
In that light, talk of a vault soft fork seems premature. The tool development is too far behind even for forks that already activated.
Similarly congestion control doesn't excite me. I'm general I'm skeptical of claims that the masses
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Sjors Provoost
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Sep 11, 2024
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Sjors Provoost
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Sep 10, 2024
npub17u773
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Sep 10, 2024
Replying to @USER
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Sjors Provoost
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Sep 9, 2024
My previous set is broken, most likely water damage because I don't live in a dessert.
So this Sony WH-1000XM3 will remain my primary headset for a while longer...

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Sjors Provoost
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Sep 8, 2024
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Sjors Provoost
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Sep 6, 2024
I'd like to follow long form notes in my RSS reader, but I won't get to it during regular catchup of my feed.
The basic workflow would be to go to a website (self hosted or otherwise), paste in an npub and then get a RSS/Atom feed URL back.
The feed should only contain long form content (though the RSS feel URL could have params in it to select the kinds of events you want it to give you).
The urn:uuid of the feed should be deterministically derived from the npub, and the urn:uuid for each entry from the nevent id, so that I can switch over to another RSS feed provider without losing my (un)read marks.
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Sjors Provoost
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Sep 6, 2024

@hzrd149 feature requests:
* a URL with hash should center the map and roughtly zoom in to the right level (that would also fix the back button, which currently jumps me to the USA)
* selecting an image should highlight the map pin (already works the other way around) and not automatically navigate away
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Sjors Provoost
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Sep 6, 2024

npub16w7c4
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May 16, 2019

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Sjors Provoost
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Sep 5, 2024
npub1xtscy
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Sep 5, 2024

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Sjors Provoost
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Sep 3, 2024
(well, it might be slow and complicated, but maybe?)
npub180cvv
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Sep 3, 2024
Replying to @USER
Which brings me back to: why not do a full repository clone on the browser and get all that data at once? Is it just the big size of things?
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Sjors Provoost
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Sep 2, 2024
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Sjors Provoost
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Sep 1, 2024
npub17ukuy
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Jun 9, 2023

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Sjors Provoost
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Aug 31, 2024
npub17ukuy
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Feb 28, 2023

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Sjors Provoost
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Aug 30, 2024
On the one hand: what a mess.
On the other hand: I don't have to beg Elon or any specific single app to fix all the things. Because identity is portable.
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Sjors Provoost
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Aug 29, 2024

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npub1mznwe
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Aug 28, 2024
It wants to know the government's minimum requirements for error rates and verifiability of the software used. It directly references the use of Chainalysis Reactor, the accuracy of which was recently questioned in the trial of alleged Bitcoin Fog operator Roman Sterlingov. Die Linke states that:
"In the view of the questioners, there currently seems to be no apparent evidence that the methods used for the forensic analysis of virtual payment flows meet scientific standards".
But that's not all. Die Linke wants to know how many cases have been filed with Financial Intelligence Units on suspicion of money laundering, and how many cases actually resulted in criminal prosecutions – noting that, in light of a total estimated volume of more than €100 Billion laundered
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Sjors Provoost
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Aug 27, 2024
I think we should propose an #MLS cipher suite that uses secp256k1 and reserve an identifier for it. That way we it can use libsecp256k1.
The secp256k1 curve can be used for both key exchange (xonly?) and (BIP340 schnorr) signatures. This curve is not yet listed under the recommended MLS Cipher Suites.
By carefully picking the other parameters it may be easier for Bitcoin signing devices to keep your chats ultra secure. And if a nostr client is already using some Bitcoin related library, then it's great if it already has the required ciphers.
Meanwhile rfc9420 has a mandatory-to-implement cipher suite MLS_128_DHKEMX25519_AES128GCM_SHA256_Ed25519. This is useful for interoperability with other social networks, but that seems low priority to me compared to being simple to implement. And with respect to not adding more dependencies and not
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Sjors Provoost
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Aug 27, 2024
npub1g9ym6
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Aug 27, 2024
Replying to @USER
```
[authorization]
Pubkey addresses in this array are whitelisted for event publishing.
Only valid events by these authors will be accepted, if the variable
is set.
#pubkey_whitelist = [
"35d26e4690cbe1a898af61cc3515661eb5fa763b57bd0b42e45099c8b32fd50f",
"887645fef0ce0c3c1218d2f5d8e6132a19304cdc57cd20281d082f38cfea0072",
Enable NIP-42 authentication
#nip42_auth = false
Send DMs (kind 4 and 44) and gift wraps (kind 1059) only to their authenticated recipients
#nip42_dms = false
```
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Sjors Provoost
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Aug 25, 2024
npub1cj8zn
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Aug 25, 2024
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Sjors Provoost
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Aug 22, 2024
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Sjors Provoost
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Aug 21, 2024

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Sjors Provoost
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Aug 21, 2024
magnet:?xt=urn:btih:596c26cc709e213fdfec997183ff67067241440c&dn=utxo-840000.dat&tr=udp%3A%2F%2Ftracker.bitcoin.sprovoost.nl%3A6969
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Sjors Provoost
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Aug 11, 2024
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Sjors Provoost
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Aug 10, 2024
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Sjors Provoost
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Aug 6, 2024

npub1ej493
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Aug 6, 2024

Google Maps is fucking stupid. You would literally have to cross an active war zone to take this route.
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Sjors Provoost
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Jul 12, 2024
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Jul 5, 2024
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Sjors Provoost
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Jun 25, 2024
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Sjors Provoost
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Jun 19, 2024
npub1x2nsd
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Jun 19, 2024
Replying to @USER
https://www.patrick-breyer.de/en/council-to-greenlight-chat-control-take-action-now/
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Sjors Provoost
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Jun 13, 2024
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Sjors Provoost
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Jun 10, 2024
Transnational voting fixes this. Or more than 0.7% of the population caring about privacy, but the former is easier to achieve.
npub1x2nsd
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Jun 10, 2024
Um das Ergebnis zu verstehen: Gehörst du zu denjenigen, die unsere Arbeit schätzen, aber trotzdem nicht #Piraten gewählt haben? Aus welchem Grund?
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Sjors Provoost
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Apr 5, 2024
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