FRANCIS
FRANCIS - BULLBITCOIN.COM

WWW.BULLBITCOIN.COM

Founder of BullBitcoin.com

Public Key

npub1t289s8ck5qfwynf2vsq49t2kypvvkpj7rhegayrur0ag9s2sezaqgunkzs

NIP-05 Address

Profile Code

nprofile1qqs94rjcrut2qyhzf54xgq2j44tzqkxtqe0pmu5wjp7ph75zc9gv3wspzemhxue69uhhyetvv9ujuurjd9kkzmpwdejhgqgjwaehxw309ac82unsd3jhqct89ejhxksm83j

Publishing to

Author Public Key

npub1t289s8ck5qfwynf2vsq49t2kypvvkpj7rhegayrur0ag9s2sezaqgunkzs

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Last Notes

2025-11-17 19:10:40 CET

Announcing Recoverbull, a privacy-first encrypted hot wallet backup and recovery protocol. Implemented in BULL wallet, it serves as an alternative to custodial wallets for beginners. A key milestone in our journey to make self-custody the safest default Bitcoin user experience!
https://www.bullbitcoin.com/blog/recoverbull-a-bitcoin-wallet-backup-system

2025-11-16 14:35:58 CET

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BULL wallet is BIP172 compliant
#nevent1q…atk6

2025-11-15 22:13:28 CET

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Its based in Bitcoin Country (Costa Rica)

2025-11-15 20:22:00 CET

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I've build three physical Bitcoin hubs in my life, (Bitcoin Embassy, BlockHouse and Bitcoin Jungle help) and I've visited countless others.
The new Freedom Center we are building in Bitcoin Jungle will become the most awesome.
Think of it as a private members club with gym/sauna/cold plunge/pool with wellness activities, that's also a coworking space for digital nomads and expats, that has classrooms to teach freedom tech to locals, and dozens of monthly events on a massive rooftop terrasse.
Yes, it's real. Opening today!
#nevent1q…hct8

2025-11-14 16:31:27 CET

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i don't know
What is the use case?

2025-11-14 02:56:15 CET

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my nsec was in cold storage

2025-11-13 20:58:49 CET

Guess who's back

2025-04-12 22:15:31 CEST

Here is @nprofile…4sn7 showing a room full of rest estate investors how to zap memes on Nostr with Primal 🤩
https://m.primal.net/QNPE.jpg

2025-01-23 20:48:07 CET

one of the most iconic photos in Bitcoin history, it's so real
https://m.primal.net/Nwnr.jpg

2025-01-21 15:23:54 CET

ma tentative d'expliquer l'impact de Trump sur Bitcoin à radio x
https://radiox.com/podcast/tu-ne-peux-pas-imprimer-des-bitcoins/

2025-01-21 15:23:07 CET

y'a tu des quebecois icitte?

2025-01-20 13:41:35 CET

We've entered the "Imperator Calligula" stage of crypto. Corruption and degeneracy no longer need justification. The industry acts a powerless senate mindlessly applauding, whoring its legitimacy with the plebs to remain in the inner circle of power Virtue is kept alive by a few philosophers in exile.

2025-01-20 13:32:28 CET

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look at me now
I am the floor
#note150g…a7m0

2025-01-20 04:38:52 CET

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no and that's when I was blocked by him

2025-01-20 03:31:54 CET

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they are great

2025-01-20 03:31:25 CET

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he changed his mind quite radically since
I think personally it's because saifedean and me argued with him about climate and covid

2025-01-20 03:26:05 CET

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you are studying software engineering ?

2025-01-20 03:24:02 CET

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Dictator by Robert Harris book 3 of Cicero series

2025-01-20 03:21:11 CET

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as you can imagine, for many reasons, including the fact that I am to my knowledge the only person having been blocked TWICE by Taleb, and also that Taleb's books were probably the most influential on my intellectual and business development.... this is one of my most prized possessions.

2025-01-20 03:17:51 CET

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sissero obviously

2025-01-20 03:17:26 CET

A world premier, on Nostr
Photo of my copy of Antifragile autographed by Nassim Taleb in 2016 with the phrase "en le remerciant de rendre la société plus sûre" which means "thank you for making society a safer place". This is in reference to my work in Bitcoin, as Taleb was visiting the Bitcoin Embassy in Montreal which he had coincidentally booked our event space for a private networking event.
I showed him our mining farm, our memes, some gadgets, explained how we turned cash into Bitcoin and vice versa and Nassim Taleb was very excited about what we were doing at the Bitcoin Embassy and about Bitcoin. I think it probably helped that I had a literal portrait of him in my office as well as "Antifragile" on my book shelf.
This copy has been burried in my personal museum vault for many years and I have not seen it since, this is the first time I release this photo (just found while backing an old drive) taken 8 years ago.
https://m.primal.net/NpRm.jpg

2025-01-20 02:58:26 CET

currently reading about the fall of the Roman Republic right now
not sure if it's the biography of Cicero or Twitter. both probably

2025-01-20 00:59:38 CET

STRIKE WHEN THE IRON IS HOT
https://m.primal.net/NowI.gif

2025-01-20 00:51:11 CET

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you gotta strike when the iron is hot 🔥🔥🌞

2025-01-20 00:47:47 CET

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WELCOME

2025-01-20 00:46:30 CET

let's fucking GO
https://m.primal.net/Notp.png

2025-01-19 19:29:56 CET

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happening!!

2025-01-19 18:43:29 CET

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doesn't matter that much if it's up or down. what matters is that the threat of it going down will be ever present in people's minds

2025-01-19 18:28:33 CET

I don't have any contacts to Ian Carroll but if ever there was an opportune time to nostr-pill him it's right now!
https://m.primal.net/NoFG.jpg

2025-01-19 17:01:02 CET

someone for the love of God set up a meeting with Ian Carroll

2025-01-19 03:06:56 CET

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CLBoss is amazing

2025-01-19 03:06:19 CET

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the Canadian Bitcoin scene on the other hand is pure 🔥
#note1dft…fk3e

2025-01-18 18:15:56 CET

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you are still running your own node when you use Phoenix!

2025-01-18 18:15:27 CET

nice new little sticker for people that make the trip to Bitcoin Jungle
@npub14f2…v7lu
https://m.primal.net/Nmix.jpg

2025-01-18 17:47:21 CET

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🙏🙏🙏

2025-01-18 17:46:49 CET

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meant to tag @npub1ds3…hzcn whoops

2025-01-18 17:46:10 CET

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https://play.google.com/store/apps/details?id=com.bullbitcoin.mobile
BETA version (safe to use but not pretty and has minor bugs sometimes)

2025-01-18 17:45:26 CET

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bull Bitcoin a son propre wallet self-custodial !

2025-01-18 17:44:24 CET

@npub1ds3…ough competition in the market for bitcoiner-made artisanal beef jerky 😁
from @npub1e86…dhu9
https://m.primal.net/Nmgx.jpg

2025-01-16 14:30:41 CET

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FUCK YES

2025-01-16 00:12:48 CET

when your brand is so strong that your are feature in an article from a country you have no business presence in, about another country where you also have no business presence in
@npub18ul…dcl9
https://m.primal.net/NiVu.jpg

2025-01-16 00:05:22 CET

more non-french people need to get to know the Indiana Jones of Bitcoin mining Seb Gospillou
https://bitcoinmagazine.com/business/mining-bitcoin-in-the-congo-and-beyond-the-journey-of-bigblock-datacenters-s%C3%A9bastien-gouspillou

2025-01-15 21:37:34 CET

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dm'd

2025-01-15 21:20:00 CET

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DM'd you

2025-01-15 21:19:02 CET

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yeah that's about right. @npub148u…ty0w going to the printer tomorrow

2025-01-15 21:15:52 CET

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👀

2025-01-15 21:14:35 CET

anybody wants to make 100,000 sats to design a physical sticker for me? basically just using an existing logo I have and adding a bit of text to it and make it into a nice shape I can send to a printer? must be done very quickly and require zero effort on my part

2025-01-15 15:45:25 CET

live later tonight at 6PM EST
https://www.youtube.com/live/8-i0UQ4oVN4?si=mGkPjvjbrkjqDBH8

2025-01-15 15:43:07 CET

back in the @CBP tonigiht with my homies @npub1s63…tl0j and @joey

2025-01-15 15:41:55 CET

back in the @npub1w4d…3vhw tonigiht with my homies @npub1s63…jand @npub1w9d…56ya

2025-01-14 23:26:01 CET

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build whatever you want for yourself on your own time
something great will emerge

2025-01-14 23:23:45 CET

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note1le582vdxv4x8ydt9235cvg5sec6s6jf2nrkyns667t34qu727aas4p8q8g

2025-01-14 22:48:27 CET

PFC mixed martial artist lightweight world champion Olivier Aubin Mercier was the first and only professional athlete sponsored by Bull Bitcoin. Become world champion right after we sponsored him 🐂
https://m.primal.net/NgoH.jpg
https://m.primal.net/NgoI.jpg

2025-01-14 22:46:05 CET

just created a Nostr feed that is only photos of steaks lmao and guess what... it actually does show me pretty much just photos of steaks. and apparently there are lots of photos of steaks on Nostr 😂
@npub12vk…pugg incredible

2025-01-14 19:32:29 CET

Bull Bitcoin sera présent à la Bitcoin Expo, organisée par NormandieBTC, le vendredi 24 janvier à Rouen.
N'hésitez pas à nous rejoindre pour une journée de conférences et d'ateliers autour de Bitcoin!
https://lu.ma/gluk14gm

2025-01-14 03:11:11 CET

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phenomenal video @npub1dzq…sjd3
#note16jm…trd2

2025-01-14 02:55:08 CET

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I'd say "no identity documents or phone number required" instead of No KYC

2025-01-14 02:50:23 CET

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damn what camera do you have 😅
https://m.primal.net/Nfbu.jpg

2025-01-14 02:46:36 CET

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it's easy in every country where I live 😎

2025-01-13 02:29:45 CET

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pros: extremely easy, very low fees, payments always work
cons: custody risk, privacy risk

2025-01-12 21:32:55 CET

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then nobody pays with Bitcoin and the merchant loses nothing

2025-01-12 21:00:32 CET

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that is how users access/recover their Bitcoin jungle account

2025-01-12 20:27:04 CET

Curate a playlist that makes you feel like a dangerous person, especially when working on Bitcoin. Start with High-Tech Minimal if you are coding privacy-related software.

2025-01-12 20:10:56 CET

The personal, as everyone’s so fucking fond of saying, is political. So if some idiot politician, some power player, tries to execute policies that harm you or those you care about, take it personally.
Get angry.
The Machinery of Justice will not serve you here – it is slow and cold, and it is theirs, hardware and soft. Only the little people suffer at the hands of Justice; the creatures of power slide from under it with a wink and a grin.
If you want justice, you will have to claw it from them.
Make it personal. Do as much damage as you can. Get your message across.
That way, you stand a better chance of being taken seriously next time. Of being considered dangerous.
And make no mistake about this: being taken seriously, being considered dangerous marks the difference - the only difference in their eyes - between players and little people.
Players they will make deals with. Little people they liquidate.
And time and again they cream your liquidation, your displacement, your torture and brutal execution with the ultimate insult that it’s just business, it’s politics, it’s the way of the world, it’s a tough life and that it’s nothing personal.
Well, fuck them. Make it personal.
- Takeshi Kovacs (Altered Carbon)

2025-01-12 19:56:01 CET

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app.bullbitcoin.com
it's live

2025-01-12 19:39:35 CET

"What's the ROI?"
https://m.primal.net/NdkA.jpg

2025-01-12 19:28:15 CET

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for sure it means LE BUNKER SPECIAL GUEST

2025-01-12 19:22:44 CET

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Amazon ftw

2025-01-12 19:21:27 CET

got some new toys. what mean? I don't know
https://m.primal.net/NdjF.jpg

2025-01-12 19:05:49 CET

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FOR GOD'S SAKE DO NOT TALK ABOUT THE FEDERAL RESERVE THEY WILL GO DOWN THAT RABBIT HOLE BY THEMSELVES ON THEIR OWN LATER

2025-01-12 19:04:06 CET

Orange-Pilling Costa Rican merchants
Total time: 5 minutes
ACT 1, SCENE 1
me: do you accept Bitcoin payments?
them: no
me: why not?
them: I don't know... I don't have the app
me: do you have a phone or tablet with you?
them: yeah
me: can I show you how it works quickly?
them: sure (shrugs)
me - I take the phone and download the Bitcoin Jungle, we add their phone number, and hand it back to them
me: here is how to receive Bitcoin, click receive enter the amount
them - they do as I say and the QR code pops up
me - use ninja speed to pay the invoice
me: congratulations you now accept Bitcoin payments
me - I show them the advanced settings and how to convert Bitcoin to local currency in a bank account with the Bull Bitcoin
me: you're all set. here is our phone number if you need help
them: cool, thanks
END
P.S. - When dealing with the owner of the shop the success rate is very high. Failure is usually do to the fact that they are not the owner of the shop. ACT 2 of this story is showing the owner how to use the Point of Sale feature and explaining how to make sure employees don't steal the money which takes another ~3-4 minutes.

2025-01-12 02:17:09 CET

Costa Rica wagyu with fries cooked at low temperature in olive oil and fire roasted veggies
for medicinal purposes
paid with Bitcoin
https://m.primal.net/NcjO.jpg

2025-01-12 01:31:19 CET

Now reading the Cicero series by Robert Harris. Book 1 "Imperium" was really good. I am enjoying it because I studied and translated Cicero's speeches from Latin when I was a youth. I went to Rome to visit the forum and was reading his speeches on the trip. might fuck around and bring back the Roman republic who knows

2025-01-12 01:24:45 CET

"When in doubt, eat a goddam steak"
I have never failed to follow this advice by
@npub1gdu…6nak
https://m.primal.net/Ncga.jpg

2025-01-12 00:32:48 CET

@npub1yzv…rf8q mobile app was very good and easy to use to publish my article

2025-01-11 19:43:47 CET

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I posted it on Yakihonne and it shows up on Nostr Reads in Primal

2025-01-11 19:40:55 CET

I have just added my article "The Hard Path" to Nostr #naddr1qq…wv8d

2025-01-11 19:31:33 CET

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it was very easy and an amazing experience

2025-01-11 19:18:12 CET

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I will try that thank you

2025-01-11 19:15:52 CET

What app should I use to write long-from content on Nostr?

2025-01-11 10:29:21 CET

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I haven't been keeping up with Bitcoin mining at all. What makes foundry so "special" that if can capture the market? I bet it's some stupid reason like they have a neat accounting dashboard or something.
#note12e4…gqs6

2025-01-10 17:13:24 CET

really nice obituary of Hal Finney in the Economist. part of my personal Bitcoin history collection
https://www.economist.com/obituary/2014/09/09/hal-finney
https://m.primal.net/NaiN.jpg

2025-01-10 16:42:47 CET

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only one will be right

2025-01-10 16:42:00 CET

Congratulations Pieter and Gmax on winning the Finney Prize! If I had been asked, it would have been a very tough call between these two and Adam Back. Many others deserve recognition (such as Luke). Finney prize is a really nice initiative.
www.finneyprize.org
https://m.primal.net/NagI.jpg

2025-01-10 15:51:49 CET

affirmation: in 2025 we will deliver the greatest open-source mobile Bitcoin app of all time

2025-01-10 08:29:57 CET

testing in production on mainnet
https://m.primal.net/NaHS.jpg

2024-12-31 17:40:40 CET

cool! Joinstr wallet library in Rust. I'm excited with Nostr as a protocol for wallets to communicate and Bull Bitcoin is happy to support projects that leverage nostr for this purpose.
Bull Bitcoin has also been working (stealth) on our own protocol for wallets to communicate over Nostr for another purpose which doesn't have anything to do with collaborative transactions... I think it will be a huge breakthrough in Bitcoin wallet user experience. coming soon... but yes the Bull Bitcoin will have a Nostr component soon (but it won't be for social media, since that area is already well covered by Primal Damus etc.)
https://m.primal.net/NMmj.jpg

2024-12-29 23:51:30 CET

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we're going to change the message. to receive via Payjoin you need to already have funds in the wallet

2024-12-29 15:29:13 CET

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no, Payjoin implies that you transact with someone else. self-spend with Payjoin does nothing

2024-12-28 21:00:19 CET

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2024-12-28 19:02:12 CET

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the open-source non-custodial wallet: yes
the exchange service: no

2024-12-28 17:45:38 CET

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oui

2024-12-28 17:43:21 CET

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eventually yes!

2024-12-28 17:33:10 CET

Bull Bitcoin becomes the first mobile Bitcoin wallet that allows users to send and receive asynchronous Payjoin transactions without needing to run their own server, using BIP77!
I am very excited about this new and bleeding-edge feature, because it has been a long-standing ambition of Bull Bitcoin to become the first Bitcoin exchange to process Bitcoin withdrawals via Payjoin (Pay-to-Endpoint) transactions.
However, it was hard to justify Bull Bitcoin investing time into building this feature since there were no commercially available end-user Bitcoin wallets that were able to receive Payjoin payments.
Indeed, in order to receive Payjoin payments (BIP78), a Bitcoin wallet needed to be connected to a full node server and be online at the moment the payment is made. This means in practice that only merchants, professional service providers and advanced full node users had the capacity to receive Payjoin payments. This is, we believe, one of the major reasons why Payjoin had failed to gain significant traction among Bitcoin users.
For this reason, the Payjoin V2 protocol (BIP77) was conceived and developed by Dan Gould, as part of the Payjoin Dev Kit project, to outsource the receiver's requirement to run his own server to an untrusted third-party server called the Payjoin Directory. In order to prevent the server from spying on users, the information is encrypted and relayed to the Payjoin Directory via an Oblivious HTTP server.
Bull Bitcoin’s Payjoin ambitions had been put on hold since 2020, until there was more adoption of Payjoin receiving capabilities among end-user Bitcoin wallets…
But it turns out that in the meanwhile, Bull Bitcoin developed its own mobile Bitcoin wallet. And it also turns out that the open-source Bitcoin development firm Let There Be Lightning, which we had collaborated with in the past, had itself collaborated with Dan to build a software library for Payjoin that was compatible with and relatively straightforward to integrate into our own wallet software. All that was missing was to put the pieces together into a finished product.
Thanks to the collaborative open source effort of the Payjoin Dev Kit team, Let There Be Lightning team and the Bull Bitcoin team, the Bull Bitcoin wallet has now become the first commercially available end-user mobile wallet on the Google Play store to implement the BIP 77 Payjoin V2 protocol.
Moreover, the Bull Bitcoin wallet has also implemented asynchronous Payjoin payments, which means that a Payjoin transaction can be “paused” until the receiver or the sender come back online. This way, the receiver's mobile phone can be “turned off” when the sender makes the payment. As soon as the recipient’s phone is turned back on, the Payjoin session will resume and the recipient will receive the payment. This is a major breakthrough in the mobile Payjoin user experience.
We would like to thank the Human Rights Foundation for allocating a generous bounty for the development of a Serverless Payjoin protocol and its implementation in a mobile Bitcoin wallet, as well as OpenSats and Spiral for supporting the work of Payjoin Dev Kit, which made this all possible.
Why does this matter?
Payjoin, also known as Pay-to-endpoint, is a protocol which allows the Bitcoin wallet of a payments receiver and the Bitcoin wallet a payments sender to communicate with each other for the purpose of collaborating on creating a Bitcoin transaction.
I first heard about Payjoin (then called Pay-to-endpoint) in 2018 and it completely blew my mind. What I liked most about it was that it was not a protocol change to Bitcoin, but rather it was an application-layer protocol that allows wallets to communicate in order to create smarter and more efficient Bitcoin transactions.
Whereas in a normal Bitcoin payment the transaction is created by the sender, and all the inputs of that transaction belong to the sender, in a Payjoin payment both the sender and the receiver contribute coins as inputs.
In the Bitcoin whitepaper, Satoshi wrote:
"some linking is still unavoidable with multi-input transactions, which necessarily reveal that their inputs were owned by the same owner"
With Payjoin, this assumption is no longer true. With Payjoin, we have fixed one of Bitcoin’s most fundamental privacy problems... without changing the Bitcoin protocol!
In a Payjoin transaction, the output amounts visible on the blockchain does not necessarily reflect the value of the payment that was actually exchanged. In other words, you can’t easily tell how much money one wallet sent to the other. This is great for users that are concerned a malicious third party may be attempting to obtain sensitive information about their finances without their consent. This does not however pose an accounting problem for the Bitcoin wallets involved in that transaction: since both wallets are aware of which coins they used as inputs and outputs, they are independently able to calculate the "actual" value of the payment that was sent even if the payment on the blockchain appears to be a of a different amount.
Payjoin breaks the common input ownership heuristic, an assumption used by hackers and fraudsters to track ownership of addresses on the blockchain. The neat thing about this property of Payjoin is that it benefits everyone on the network, not just the Payjoin users themselves.
It allows the receiver of a payment to opportunistically consolidate his utxos when he is receiving funds, in a way which does not necessarily appear to be a consolidation transaction on the blockchain. Depending on the configuration of a payment transaction, it can also make a regular payment look like a consolidation.
In addition to these benefits, the introduction of collaborative peer-to-peer transaction protocols opens up exciting opportunities for the creation of Lightning Network channels, as well as efficiencies for transaction batching.
How to use Payjoin in the Bull Bitcoin wallet:
It’s so seamless, you may not even realize you are using it!
To receive via Payjoin, simply navigate to the “Receive tab” using the network “Bitcoin” and you will see a Payjoin invoice. When you want to get paid, send this invoice to the payer, or show them the QR code. If the sender’s wallet is compatible with Payjoin, it will be up to the sender to decide whether or not they want to use Payjoin.
To send via Payjoin, simply paste the receiver's Payjoin invoice, or scan the associated QR code, in the Bull Bitcoin wallet. If you decide that you don’t want to pay with Payjoin, simply turn off the Payjoin toggle.
Original post: https://www.bullbitcoin.com/blog/bull-bitcoin-wallet-payjoin
Download the wallet: https://play.google.com/store/apps/details?id=com.bullbitcoin.mobile&hl=en-IN
https://m.primal.net/NJWD.png

2024-12-14 06:31:22 CET

raw milk latte Costa Rican coffee paid with Bitcoin in the middle of the jungle hits different
https://m.primal.net/MveB.jpg

2024-12-13 21:49:40 CET

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time for the weekly board
#note1qut…c8fk
https://m.primal.net/MvMg.jpg

2024-12-06 16:12:52 CET

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another week, another whiteboard
@npub148u…ty0w
🤩
#note1m9a…w2d9
https://m.primal.net/MpAp.jpg

2024-12-01 16:47:32 CET

The backside of the new BULLBITCOIN t-shirt collection designed by @npub1ndk…gk2v
unprecedented level of brand distinction
I swear we are a financial technology company not a cyberpunk motorcycle gang
limited quantities only here https://store.bullbitcoin.com
https://m.primal.net/MlXi.jpg
https://m.primal.net/MlXl.jpg
https://m.primal.net/MlXk.jpg

2024-11-30 15:12:14 CET

when I come into the Bitcoin Jungle office and I know that @npub148u…ty0w held a Bitcoin class the day before 🧡
https://m.primal.net/MksJ.jpg

2024-11-26 00:50:11 CET

officially a NodeRunner
@npub1ua6…h6v6
https://m.primal.net/MhPY.jpg
https://m.primal.net/MhPZ.jpg