Controversial posts, misleading marketing, absurdity, corporate spin, controversies, failed promises, and funny statements are things that many companies and services in the Bitcoin and crypto world have been guilty of. I would like all of us to collect such posts and statements to mock them a little bit and have fun. It can be brand-new posts (preferably) or something from the past that turned out to be false. I will self-moderate this thread to avoid turning it into a spam fest, but I welcome everyone to contribute to it. If you share a post, please also include your own comment, explaining what is wrong with the statement, what's questionable or misleading. I call this segment The Bullshit Monitor, Trust Us, Bro.
I will begin with good ol' Ledger. Two days ago, they wanted to remind everyone that they will never ask their users for their secret recovery phrases. Of course not. Why would they? They only created a feature, built into the firmware that extracts your keys for you and sends them over the internet to multiple third-parties for "safe-keeping."  https://x.com/Ledger/status/2060462385052172382 |
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Najbolji način da se suprotstavi FUD-u, mitovima i lažnim tvrdnjama o Bitcoinu jest činjenicama, tačnim podacima i dokazima iz recenziranih istraživanja. To Bitcoin Evidence Base radi. Pronašao sam stranicu na društvenim mrežama. Stranicu je napravio @MSTR_Norway. Može odgovoriti na pitanja i tvrdnje o Bitcoinu koristeći model koji se suprotstavlja FUD-u a kojeg je razvio Daniel Batten. Kako ga koristiti?Otvorite alat za istraživanje i postavite pitanje ili objavite tvrdnju. AI će smisliti odgovor temeljen na činjenicama za nekoliko sekundi. Možete mijenjati ton između izravnog, uravnoteženog i blagog, pa čak i prilagoditi odgovore društvenim mrežama kao što su X, Facebook ili LinkedIn. Baza podataka sa dokazimaBaza podataka trenutno sadrži 115 unosa u različitim kategorijama. Kategorije uključuju: - Energija & Održivost - Uticaj na okoliš - Cijena električne energije - Prihvaćanje - E-Otpad - Razotkrivene studije - Uobičajeni mitovi - Volatilnost - Sigurnost & Tehnologija - Scaling - Decentralizacija - Itd. Posjetite stranicu 'Contribute' kako biste dodali temu za koju smatrate da bi trebala biti uključena u bazu podataka. Vaš doprinos će proći kroz proces provjere prije nego što bude prihvaćen i dodan u bazu podataka. Koji su izvori dokaza?Recenzirana istraživanja Sveučilišta Cambridge, ERCOT-a, Zaklade za Ljudska Prava i više od 22 akademske studije. Izvori: https://facts.bitcoinbeyond66.com/https://x.com/DSBatten/status/2049868832798335259 |
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The best way to counter FUD, myth, and false claims about Bitcoin is with facts, data, and evidence from peer-reviewed research. That’s what the Bitcoin Evidence Base does. I came across it on social media yesterday. The site was created by @MSTR_Norway. It can answer questions and claims about Bitcoin using the FUD-countering model developed by Daniel Batten. How to use it?Open the research tool and ask your question or post a claim. The AI will generate a fact-based response in seconds. You can change tone between direct, balanced, and soft, and even adapt responses to social media platforms like X, Facebook, and LinkedIn. Evidence databaseThe database currently contains 115 entries in different categories. The categories include: - Energy & Sustainability - Environmental benefits - Electricity Prices - Adoption - E-Waste - Debunked studies - Common myths - Volatility - Security & Tech - Scaling - Decentralization - Etc. Visit the ‘Contribute’ tab to add a topic you believe should be included. Your contribution will go through a fact-checking process before being accepted and added to the database. What’s the source of the evidence?Peer-reviewed research from Cambridge University, ERCOT, Human Rights Foundation, and 22+ academic studies. Sources: https://facts.bitcoinbeyond66.com/https://x.com/DSBatten/status/2049868832798335259 |
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Boltz je non-custodial bitcoin bridge i platforma za atomic swaps. Koristi se kao most između Bitcoin L1 i L2 blockchaina, a nedavno je dodana podrška za USDT i TBTC.  Podržane mreže: - Bitcoin - Lightning - Liquid - Rootstock - TBTC (Arbitrum)* - USDT na nekoliko blockchaina* *Dostupno na https://beta.boltz.exchange/Glavne značajke: - Instant atomic swaps - non-custodial - Bez KYC - Bez kreiranja naloga - Niske naknade - Privatnost i anonimnost (Dostupna preko TOR) - Povremeni popusti na naknade i posebne ponude za razmjenu određenih parova (Pro verzija) Naknade: Boltz mjenjačnica korisnicima naplaćuje dvije različite vrste naknada: mrežnu naknadu i Boltz naknadu. Boltz naknada iznosi između 0,1% i 0,5%, ovisno o tome šta mijenjate. Kako uraditi swap na Boltz mjenačnici?- Da biste napravili atomic swap, odaberite mrežu i coin kojeg želite poslati, a potom kriptovalutu koju želite primiti. Obratite pažnju na minimalne i maksimalne iznose koje možete zamijeniti i naknadu koju ćete morati platiti. - Unesite svoju adresu, LN invoice, LNURL, BOLT12 itd. u predviđeno polje i kliknite na dugme "Napravite Atomic Swap". - Prije slanja sredstava možete sačuvati Boltz rescue key (seed) s kojim možete povratiti vaš atomic swap u slučaju greške. Da biste to učinili, kliknite na ikonu zupčanika u gornjem desnom uglu i pod "Sigurnost" kliknite na dugme "Kopiraj" da biste kopirali seed ili dugme "Preuzmi" da biste preuzeli JSON datoteku sa sigurnosnim ključem.  - Pošaljite potreban iznos i sačekajte da se vaš swap dovrši. - U slučaju da zamjena ne uspije nakon što ste poslali sredstva, kliknite na tab "Rescue". Tu možete importirati svoj seed ili JSON datoteku sigurnosnog ključa klikom na "Rescue External Swap". Web stranica: https://boltz.exchange/Beta verzija: https://beta.boltz.exchange/Pro verzija: https://pro.boltz.exchange/Onion link: http://boltzzzbnus4m7mta3cxmflnps4fp7dueu2tgurstbvrbt6xswzcocyd.onion/GitHub: https://github.com/BoltzExchangeX: https://x.com/boltzhqNostr: https://primal.net/p/nprofile1qqsqcdcltmv4qanpx3p7svcufdsg9rkk00x7l2sknra4e6whkv59l7clgcdzjYouTube: https://www.youtube.com/playlist?list=PLkqOa9SGBeZfAEHvKkGKjeRIASeu6bNO3Boltz’s Blog: https://blog.boltz.exchange/ Pomoć & Podrška : https://support.boltz.exchange/hc/center/enDocs: https://docs.boltz.exchange/
- Ne radim za niti sam predstavnik Boltz mjenjačnice.
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Boltz is a non-custodial bitcoin bridge and atomic swaps platform. It's used as a bridge between Bitcoin's L1 and L2 layers, and has recently added support for USDT and TBTC. Supported networks: - Bitcoin - Lightning - Liquid - Rootstock - TBTC (Arbitrum)* - USDT on multiple networks* *Available over https://beta.boltz.exchange/Main Features: - Instant atomic swaps - non-custodial - No KYC - No account registration - Low fees - Private and anonymous (Available on TOR) - Occasional fee discounts and special deals for swapping certain pairs (Pro version) Fees: Boltz exchange charges two different fees: a network fee and a Boltz fee. The Boltz fee is between 0.1% and 0.5%, depending on the selected swap pair. How to perform swaps on Boltz Exchange?- To perform an atomic swap, select the network and asset you want to send as well as the layer you wish to receive on. Pay attention to the min. and max. amounts you can swap and the fees you will be charged. - Enter your address, LN invoice, LNURL, BOLT12, etc., in the designated field and click the "Create Atomic Swap" button. - Before sending the funds, you can save the Boltz rescue key (seed) that can recover your atomic swap in case an error occurs. To do that, click the gear icon in the top right and under 'Security', click the ‘Copy’ button to copy the seed or the ‘Download’ button to download a JSON file of the backup key. - Pay the needed amount and wait for your swap to be finalized. - In case the swap fails after you sent your coins, click on the "Rescue" tab. You can import your rescue key or upload the JSON file of your rescue key by clicking on "Rescue External Swap". Website: https://boltz.exchange/Beta: https://beta.boltz.exchange/Pro: https://pro.boltz.exchange/Onion link: http://boltzzzbnus4m7mta3cxmflnps4fp7dueu2tgurstbvrbt6xswzcocyd.onion/GitHub: https://github.com/BoltzExchangeX: https://x.com/boltzhqNostr: https://primal.net/p/nprofile1qqsqcdcltmv4qanpx3p7svcufdsg9rkk00x7l2sknra4e6whkv59l7clgcdzjYouTube: https://www.youtube.com/playlist?list=PLkqOa9SGBeZfAEHvKkGKjeRIASeu6bNO3Boltz’s Blog: https://blog.boltz.exchange/ Help & Support: https://support.boltz.exchange/hc/center/enDocs: https://docs.boltz.exchange/
- I am not associated with or a representative of Boltz exchange
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I haven't seen anyone else mention this on the forum. It's a database that documents cases of violence and physical attacks on bitcoin and cryptocurrency holders since 2014. You can take a look at it at https://stats.gart.io/These are the current stats at the time of writing: - 310 reported attacks - 57 countries where attacks took place - +77% year to year increase in attacks - 25 fatalities The database contains several interesting stats and graphics. For example, there is this one that shows the correlation between the price of bitcoin and the number of attacks. As the value of BTC increases, the number of attacks increases.  The three most common attack scenarios include kidnapping (76 cases), home invasion (68 cases), and armed robbery in public (37 cases).  The most interesting data for me is the 'attacks per country' statistic. The US is, as expected, at the top with the most documented cases. In second place, we have France - Ledger's home country, from where multiple data leaks occurred. There is surely a connection there. The UK is third, Canada fourth, and Thailand in fifth place.  At the bottom of the page, you can read news articles about all the documented violence cases against crypto owners. Is there anything that surprised you with the data from this database? |
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Tether froze over $180 million in USDT across five wallets on the Tron blockchain a few days ago. It's believed that those wallets are connected to Venezuela, that used USDT for oil trade and to evade US sanctions. It's reported that 80% of Venezuela's oil revenue is settled in USDT. And what happened? US political interests happened, and that resulted in Tether freezing the addresses.  Source: https://finance.yahoo.com/news/tether-freezes-182m-usdt-largest-105442400.htmlThe lesson is clear. You don't own centralized stablecoins. You co-own them with the issuer. An issuer that can remove you from the equation at any time. Stablecoins can be a very dangerous double-edged sword, and the way they work is very different from bitcoin. It's not freedom money if there is a governor that can take it from you. It's just a new form of the petrodollar, where the same powers can pull the strings. But Bitcoin doesn't have an issuer. Transactions settle every 10 minutes without asking the "Bitcoin Board of Directors" or the "CEO" if it's ok. Orange presidents can't call the "Bitcoin Security Department", threaten them with tariffs, and request a rollback or a freeze. The blockchain doesn't care who you are or who your political alliances are. Nodes don't discriminate, and only make sure that the rules are being followed. It's that simple to achieve financial freedom. If you do it right, no one can steal your money from you. Well, they can if they invade, capture your President, and... Oh! Rant over! Use Bitcoin. Everything else is secondary. We don't need any more examples. |
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I don't own nor am I associated with this service. I came across it and found it interesting. That's the only reason I am sharing it here.
DrawingBitcoin is a Bitcoin block visualizer that fetches new blockchain data in real time. It's powered by the mempool.space api, but the developer plans to self-host it in the future. In the middle of the website, you will see a ring pattern. That's the most recent mined Bitcoin block. Each block is represented as a ring that you can hover with your mouse over to display the BTC values that compose that block. For example, here is block height #929865:  You can see the current block information in the top-right corner of the website. It displays the block height, number of transactions in the block, the timestamp, and the hash. You can also compare two blocks, in which case the ring gets divided into two: one half for each ring. If you want to do that, enter a block height under the "Compare blocks" section. In the image below, you can see how block #929865 looks in comparison to block #266133, for example:  The website supports standard and black mode. Click the arrow on the right to enter full-screen mode to get a bigger block visualizer.
Website: https://drawingbitcoin.com/X: https://x.com/architect_btc
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A security research group called DARKNAVY discovered a vulnerability in Jade hardware wallets with older firmware versions. This problem affects firmware versions 1.0.24 to 1.0.36. Blockstream has already patched the issue and released updates 1.0.37 and 1.0.38. They now recommend that all Jade users upgrade their firmware to the latest version. About the vulnerabilityThe affected firmware versions allowed a malicious app on your PC or phone or a website you connect to, to send specific instructions to the Jade. The code could be modified and made to reboot the hardware wallet, give the person temporary control of the device, read or modify data on the Jade, and possibly extract private keys. For this to work, the PC or laptop would have to be infected with the needed malware. Or someone would have to trick you into installing a fake Blockstream App. It could also work if you gave permission to a malicious website to connect to your Jade. This is not a remote hack. The company has not found any traces of this vulnerability being used in connection with the official Blockstream app. A malicious party can't install a modified version of the firmware on your device, and any changes made to the Jade were reverted after the device rebooted. The issue didn't affect Jade as a stateless signer when the device communicated through QR codes. For someone to be affected by this, they would need to install and use malware-infected and fake software on their phone or PC, and malicious code that targets the specific firmware version they have installed on their Jade. From what I understand, there was no generic attack vector that worked on all affected firmware versions and for both the standard and no-Bluetooth firmwares. Still, Blockstream calls the vulnerability "severe" in their blog post. You can read the entire disclosure below: Jade Security Disclosure |
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* I am not affiliated with the website or its author. I am just sharing information I found.
A friend of mine mentioned https://www.bitcointutorials.org/ to me today. It's a website that contains a total of 774 Bitcoin-related YouTube videos. It allows you to search for specific video tags or creators. You can also filter videos by clicking on the tags visible on the left. It makes finding content specific to your interests easy. I recommend that you enable only one tag at a time, as this narrows down the search results and excludes videos that don't contain both tags. The site creator tagged each video with one or more tags himself based on the topics being discussed. You can watch all videos on the site or click on the YouTube button within the video to watch it on YouTube. If you want to make suggestions to the site or want it to include certain videos, you can do so over the dedicated GitHub page. The site has 9 main categories. Those are: - Signing Devices: Hardware wallets like BitBox, Coldcard, Ledger, Passport, Trezor, etc. - Wallets: Mobile and software wallets like Bitcoin Core, BlueWallet, Electrum, Sparrow Wallet, etc. - Nodes & Servers: Bitcoin full nodes and indexers like Bitcoin Core, Bitcoin Knots, Electrs, Fulcrum, Start9, Umbrel, etc. - Mining: Miners and mining pools like Avalon Nano, Bitaxe, Braiins, DATUM, etc. - Lightning Network: The Lightning ecosystem and wallets like Alby, Boltz, Core Lightning, LND, etc. - Services & Exchanges: Bitcoin exchanges and payment processors like BTCPay Server, Bisq, Bitrefill, Peach Bitcoin, Robosats, etc. - Tokens: Videos about Liquid, Bitcoin Testnets, and USDT. - Ecash: Cashu and Fedimint. - Privacy & Security: Privacy and security tools and implementations like Child Seeds, Coinjoin, Multisig, Payjoin, Silent Payments, etc. - Advanced Features: Advanced Bitcoin features like CPFP, PSBT, RBF, Statechains, Timelocks, etc. I think https://www.bitcointutorials.org/ is useful for beginners who don't know where to start with Bitcoin videos on YouTube. |
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OneKey currently has a promotion for its hardware wallets. You can purchase them on a 12% discount by entering the promo code "FRIENDS" during checkout.
The promotion should run until 4 October 2025.
The discounted devices:
- OneKey Pro costs $244.64 instead of $278.
- OneKey Classic 1S costs $87.12 instead of $99.
- OneKey Classic 1S Pure costs $69.52 instead of $79.
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Ledger's security team, Ledger Donjon, discovered a vulnerability in Tangem cards that could be exploited by brute-force password attacks. These cards can be exploited with specialized hardware equipment to bypass Tangem's built-in brute-force delay system. The technique Ledger used is known as "tearing." Successful tearing allowed Ledger Donjon to try around 2.5 login passwords per second, which decreases the time required to brute-force weak passwords. Tangem Cards aren't upgradable, so this problem can't be fixed. What users can do is use more complex passwords of at least 8 characters, including letters, digits, and special symbols. Here are more details on the report Ledger Donjon wrote and shared with Tangem: https://www.ledger.com/blog-brute-force-attack-tangemTangem’s Anti-Brute-Force SystemAfter 6 incorrect password attempts on a Tangem card, a 1-second delay is added. Each new incorrect password increases this delay by 1 second, up to a maximum of 45 seconds. If we take this into account, Ledger estimates how long it would take to brute-force simple PINs of 4-8 digits: - 4-digit PIN: ~5 days - 6-digit PIN: ~520 days - 8-digit PIN: ~143 years The Tearing AttackA tearing attack interrupts power to the card during the operation of counting the login entries. If done successfully, an attacker can get unlimited password entries without triggering a delay in the system. Tangem Cards don't erase the seed after X number of unsuccessful password entries like some other wallets do. What Did Ledger Donjon Do?They modified Tangem cards, soldering their own antennas to capture signals and measure electromagnetic emissions (EM). Tangem uses a secure channel on its cards to protect against data exchanges. This channel uses a password that is derived from the user's password. By brute-forcing the secure channel, Ledger could also brute-force the login password. Ledger Donjon discovered that this channel is vulnerable to tearing attacks. When observed on monitors, the EM emissions between correct and incorrect passwords were different, making them easy to distinguish. Using equipment that Ledger claims costs under $5,000, they were able to test passwords continuously without delays.   Impacts of the Tearing Attacks Tearing attacks require physical access to the cards and special equipment. The attackers can then try new passwords at a rate of around 2.5 passwords per second compared to 1 password every 45 seconds. The biggest risk is with weak passwords made up of a common word. They are vulnerable to dictionary attacks. An attacker could try 1 million common passwords in around 4.5 days. Here is a comparison of an attack rate of 2.5 passwords per second compared to 1 password every 45 seconds:  Ledger's Recommendations to Tangem and Tangem UsersUse strong passwords. - 8 characters or more - Letters, numbers, and special characters - Tangem shouldn't allow users to use weak passwords - Current users of weak passwords should upgrade to more complex ones Source: https://www.ledger.com/blog-brute-force-attack-tangem |
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8. Rujna se dogodio značajan hack i napad na open-source JavaScript ekosustav koji je mogao imati mnogo veće posljedice nego što je imao ali srećom nije. U napadu je kompromitiran NPM developer nalog poznatog developera, qix koji održava kodni sustav mnogih open-source paketa. Nakon što su hakeri preuzeli njegov nalog, pustili su u opticaj zlonamjerne update-te oko 20 JavaScript paketa. Ovi paketi se koriste i preuzimaju oko 2 milijarde puta tjedno i od različitih usluga u kripto softver ekosustavu. qix je dobio phishing email koji je ličio na poruku NPM korisničke službe nakon čega je resetovao svoju šifru i 2FA i na taj način hakeru dao pristup svom nalogu. Zlonamjerne verzije koda su objavljene 8. Rujna. Vrlo brzo su prepoznate kao takve i kompromitovani JavaScript paketi su uklonjeni poslje par sati. Pretpostavlja se da su oko 2 sata zlonamjerne verzije bile javno dostupne i da su i preuzete od određenih softvera u vidu update-a. Zapravo, mali postotak softvera je izvršio update. Modifikacije koda su srećom i igrom slučaja otkrivene nakon što je jedan od kompromitovanih paketa javljao grešku. Nakon pregleda, developeri su otkrili sumnjive funkcije i novi kod. Da je to spretnije odrađeno, pitanje je kad bi se kompromitovani paketi otkrili. Zlonamjerni kod je zapravo bio clipboard malware, kreiran da promjeni adresu na koju žrtva šalje kripto u adresu pod kontrolom hakera. Ovaj malware je tražio i napadao web i softverske novčanike koje koriste JavaScript, kakav je npr. MetaMask za desktop. Ali i neki softverski novčanici od poznatih hardverskih kompanija navodno koriste JavaScript kao što su Ledger Live ili Trezor Suite. Ovo nije potvrđeno i predstavnici svih kompanija i developeri walleta su u većini slučajeve preko X objavili da njihovi softveri nisu kompromitovani niti da koriste izmijenjene pakete. Malware je koristio poseban algoritam koji je birao adrese koje najviše liče na one adrese na koje su žrtve slale kripto kako bi spriječio da se otkrije. Iako je napad mogao da uzrokuje veliku štetu da nije brzo primječen, da nisu neki paketi javljali greške, i da su poznati web wallet-i ili mjenačnice povukle update kompromitovanih JavaScript paketa, srećom to se nije desilo. Neki izvori tvrde da je ukradeno oko $500 u kriptu u različitim valutama dok drugi smatraju da je ukradeno svega $20. Ovakvim napadom nisu pogođeni walleti koji ne koriste JavaScript pakete. U to spadaju popularni hardverski novčanici koji imaju ekran na kojem možete provjeriti adresu na koju šaljete i gdje biste vidjeli ako nešto nije uredu čak i ako vam softver pokazuje nešto drugo. Od popularnih sotverskih novčanika, nisu pogođeni Sparrow, Electrum, Wasabi, Nunchuk, itd. Najrizičniji su web walleti kao MetaMask, Rabby itd. Vjerovatno i kripto mjenačnice koriste JavaScript ekosustav. Ovaj put hakerima nije pošlo za rukom. Ali će sigurno naučiti nešto iz ovoga i vratiti se sa boljim planom u budućnosti... Detaljan izvještaj o ovom slučaju možete pročitati ovdje: https://jdstaerk.substack.com/p/we-just-found-malicious-code-in-the |
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This is episode #2 of stories involving crypto owners who were hacked and/or lost a lot of money to various online scams. Last month, I wrote BTC Investor Losses 7,4 BTC with Fake Sparrow Wallet Mobile App.This is a more complex story and a more advanced scam that resulted in Alexander Choi losing $996,000 in various coins and tokens. Here is what happened... The story begins with Alexander being approached over X by some token community profile regarding a partnership opportunity. They were interested in working with him and asked him to schedule a call to talk more. They had two meetings over Microsoft Teams, and everything seemed legitimate and done professionally. The first person Alexander spoke to introduced himself as Dan. He had an American accent and was well-spoken. They discussed the future and how they could cooperate because Alex is also a crypto founder. They spoke again two days later. This time, another cofounder joined the meeting to discuss their plans. Two days go by, and Alexander gets a notification on his phone that some crypto got transferred out of one of his wallets. He checked several wallets on his PC and noticed that each one had been emptied. In total, he claims that almost 150 different wallets and addresses got drained of all their coins. Alexander then did some more research on the SPARK token community he was talking to. Turns out, they had fake followers and were involved with another rug pull in the past under a different name. The money is gone now, and he will probably never get it back. But there are several things you can do differently from Alexander to not get yourself in a similar situation: - Don't hold your crypto in hot wallets. Especially not on devices you use for everyday activities. If Alexander's crypto had been in a hardware wallet, an airgapped computer, or a second computer he only uses for crypto, this could have been avoided. There is no reason to hold $1 million worth of crypto on an internet-connected device when there are safer options around. - Take your time to investigate and research people and projects. Alexander found out these people were scammers, but only after they scammed him. Why didn't he do his due diligence before? - Always be careful and suspicious. It's still unclear what kind of Microsoft Teams meeting Alex attended. He claims it was an official link, but who knows. Fake links with extensions and scripts are shared this way. One wrong click and you invite malware and drainers into your system. If you want to read the full story, you can do so here: https://x.com/notalexchoi/status/1964464236710461885 |
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Those familiar with Bitcoin and who visit mempool.space won't be surprised to see that many blocks contain transactions where users paid less than 1 sat/vByte in fees. It is now possible to pay as low as 0.10 sat/vByte, while for a long time, the bottom threshold was 1 sat/vByte. People who run their own nodes and use Bitcoin Core can easily adjust a few settings to enable their software to support and relay transactions to other peers at such low fees. However, ordinary users don't run their own nodes, so they need another solution. Two popular wallets that support sub 1 sat/vByte transactions are Trezor Suite and Electrum. Sparrow Wallet and Blue Wallet have announced their support for future releases. How to send a bitcoin transaction and pay less than 1 sat/vByte with Trezor Suite?Owners of Trezor hardware wallets can create and sign transactions that pay less than 1 sat/vByte in fees using Trezor Suite. There are two very similar ways to do that. I will describe the one that worked for me, but this link has an alternative that you can try if you want. Please note that this alternative method did not work for me. 1. Create a transaction the normal way. Enter the address you are sending bitcoin to, the amount you are sending, and the fee you wish to pay (eg, 0.3 sat/vByte). 2. Above the field where you entered the destination address, you will see the option "Broadcast". Click on it to change it to "Broadcast: off." 3. You will notice that you can't click on the "Sign" button yet. 4. Click on the three dots in the upper right corner of Trezor Suite and click on "Send raw". 5. A new window will pop up. 6. When it opens, close it again without entering anything. 7. After closing the window, it will be possible to click on the "Sign" button to sign your transaction. You may have to open and close the window two or three times to make the "Sign" button clickable. 8. Sign the transaction by clicking "Sign." 9. After signing the transaction, a "Copy raw transaction" button will appear. 10. Click on "Copy raw transaction." 11. Paste the signed and still non-broadcast transaction that you copied on https://mempool.space/tx/push into the "Broadcast Transaction" field. 12. Click the "Broadcast Transaction" button. 13. The transaction ID of the broadcasted transaction you sent will appear on screen. You can use this ID to track the status of your transaction. How to send a bitcoin transaction and pay less than 1 sat/vByte with Electrum?Electrum wallet can send bitcoin transactions with fees lower than 1 sat/vByte if you are connected to a node that supports such transactions, and after entering one line of code in the Electrum console. Below are instructions on how to set this up. 1. Open Electrum and the wallet from which you want to send a sub 1 sat/vByte transaction. 2. Click on the orb in the lower right corner of the app to change network settings. 3. If you have not previously changed the method of connecting to Electrum servers, Electrum will randomly select one and connect to it. You need to change that by clicking on the "Connection mode" field and choosing "Manual server selection." 4. After that, click on "Close." 5. Click again on the orb in the lower right corner to adjust network settings. 6. In the "Server" field, copy/paste the following server: electrum.labrie.ca and click "Close." Electrum will then connect to this server. You can also connect to LoyceV Electrum server, electrum.loyce.club if you wish. 7. If the "Console" tab is not visible in your Electrum app, you need to activate it by clicking "View > Console" in the upper left corner of the software. 8. After you have connected to the appropriate server, click on the "Console" tab and copy/paste the following command: wallet.relayfee = (lambda: 0) and click ENTER. You need to enter this command every time you want to send a transaction with fees lower than 1 sat/vByte until this becomes the standard and is merged into an official Electrum release. TryNinja made his own plugin that includes this command when you start Electrum. You can also install it if you want, using the instructions in this post. 9. When you're done, create your transaction in Electrum and send it. With Electrum, you also have an option to copy a raw transaction and broadcast it via the mempool.space page as I explained in step #11 above. To do this, you first need to sign the transaction in Electrum and then click the buttons "Preview > Share > Copy to clipboard." Paste the copied string on the page https://mempool.space/tx/push. How to send a bitcoin transaction and pay less than 1 sat/vByte with Sparrow Wallet?The 2.2.4 pre-release beta version of Sparrow Wallet supports sending transactions that pay less than 1 sat/vByte in fees. However, the user must configure the minrelaytxfee option in their server settings to support lower-fee transactions or be connected to a node that has this setting adjusted. Update: This feature has now been added to the official 2.3.0 version of Sparrow Wallet! 1. Download the 2.2.4 beta version of Sparrow Wallet from https://github.com/craigraw/beta/releases/tag/2.2.4-support-minrelaytxfee or just upgrade the software to version 2.3.0. 2. Connect to a server that has changed the minrelaytxfee setting or make the changes yourself in your bitcoin.conf file. Fee settings can also be changed by " editing the Sparrow config file in Sparrow home and changing the value of minRelayFeeRate to a value >= 0.0 and < 1.0." If the server you are connected to isn't configured correctly, you will get a broadcast error. How to send a bitcoin transaction and pay less than 1 sat/vByte with Blue Wallet?The 7.2.1 version of Blue Wallet supports creating and broadcasting transactions that pay less than 1 sat/vByte in fees. You must be connected to a configured server that will allow you to send such transactions. Here is how to set it up. 1. Log in to your Blue Wallet. 2. Click the three dots in the top right corner. 3. Click on "Network" and then on "Electrum Server." 4. You will need to enter a server and port number under "Preferred Server" of one that will relay sub 1 sat/vByte transactions. You can enter electrum.loyce.club or electrum.labrie.ca as those two have been confirmed to work. Enter 50002 as the port number, and make sure " Use SSL" is ticked. 5. Click on "Save." 6. If done correctly, Blue Wallet will show a notification that the server was changed. 7. Restart the app for the changes to be saved. 8. Check the server settings after restart to see if you are connected and the server is online. 9. Create and broadcast your transaction as you normally would. I intend to expand this thread and add to the list the procedure for sending sub 1 sat/vByte transactions with Sparrow and Blue wallets in the future if needed. I will only do that if it's a non-standard way of sending transactions. |
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Oni koji prate dešavanja s Bitcoinom i posječuju mempool.space sigurno su primjetili da mnogi blokovi sadrže transakcije gdje su korisnici platili manje od 1 sat/vByte u naknadama. Sad je moguće platiti i 0.10 sat/vByte a dugo je donja granica bila 1 sat/vByte. Ko ima svoj node i koristi Bitcoin Core može lako promjeniti jednu postavku kako bi softver podržavao i prosljeđivao drugim node-ovima transakcija sa ovako niskim naknadama. Međutim, obični korisnici nemaju svoje node-ove pa im treba drugo rješenje. Dva poznata wallet-a koji također podržavaju ove transakcije su Trezor Suite i Electrum. Sparrow Wallet i Blue Wallet su najavili podršku u budućnosti. Kako poslati bitcoin transakciju i platiti manje od 1 sat/vByte sa Trezor Suite?Vlasnici Trezor hardverskih novčanika mogu kreirati i potpisati transakciju koja plaća manje od 1 sat/vByte u naknadama pomoću Trezor Suite aplikacije. Postoje dvije vrlo slične metode. Opisat ću onu koja je meni pomogla a na ovom linku ima alternativna koju možete probati ako želite. Imajte na umu da ova alternativna kod mene nije funcionisala. 1. Kreirajte transakciju na standardni način. Unesite adresu na koju šaljete bitcoin, količinu koju šaljete i naknadu koju želite platiti (npr 0.3 sat/vByte). 2. Iznad polja u kojem upisujete adresu za slanje imate opciju "Broadcast". Kliknite na to da vam se promjeni u "Broadcast: off." 3. Primijetit će te da nećete moći kliknuti na dugme za potpisivanje transakcije. 4. Kliknite na tri tačkice u gornjem desnom uglu Trezor Suite aplikacije i kliknite na "Send raw". 5. Otvorit će vam se novi prozorčić. 6. Nakon što se otvori opet ga zatvorite bez da išta upisujete. 7. Nakon što zatvorite prozorčić, bit će moguće kliknuti na dugme za potpisivanje transakcija, "Sign". Moguće da će te morati otvoriti i zatvoriti prozorčić dva-tri puta. 8. Potpišite transakciju klikom na "Sign." 9. Nakon potpisivanja transakcije, pojavljuje se novo dugme, "Copy raw transaction." 10. Kliknite na "Copy raw transaction." 11. Potpisanu i neposlanu transakciju koju ste kopirali zaljepite na stranici https://mempool.space/tx/push u polje "Broadcast Transaction." 12. Kliknite na dugme "Broadcast Transaction." 13. Pojavit će vam se transaction ID od transakcije koju ste upravo poslali. Pomoću tog ID možete pratiti status vaše transakcije. Kako poslati bitcoin transakciju i platiti manje od 1 sat/vByte sa Electrum?Electrum novčanik može slati bitcoin transakcije gdje su naknade niže od 1 sat/vByte ako ste konektovani na server koji podržava takve transakcije i nakon što unesete jedan kod u Electrum konzolu. U nastavku slijedi uputstvu kako sve podesiti. 1. Otvorite Electrum i wallet s kojeg želite poslati transakciju. 2. Kliknite na kuglicu u donjeg desnom uglu za promjenu mrežnih postavki. 3. Ako prethodno niste promjenili način povezivanja sa Electrum serverima, vaš novčanik će slučajnim odabirom izabrati jedan i konektovati se na njega. To trebate promjeniti klikom u polje "Connection mode" i izabrati "Manual server selection." 4. Nakon toga kliknite na "Close." 5. Ponovo kliknite na kuglicu u donjem desnom uglu za podešavanje mrežnih postavki. 6. U polje "Server" upišite slijedeći server: electrum.labrie.ca i kliknite "Close." Electrum će se tad spojiti na taj server. Možete koristiti i Electrum server od LoyceV, electrum.loyce.club ako želite. 7. Ako vam u Electrumu nije vidljiv tab "Console", potrebno je da ga aktivirate klikom na "View > Console" u gornjem lijevom uglu softvera. 8. Nakon što se spojite na odgovarajući server, kliknite na "Console" tab i kopirajte slijedeću komandu: wallet.relayfee = (lambda: 0) i kliknite ENTER. Ovu komandu je potrebno upisati svaki put kad želite da pošaljete transakciju s naknadama nižim od 1 sat/vByte bar dok ovo ne postane sastavni dio Electrum koda. TryNinja sa foruma je napravio svoj plugin koji uključuje ovu komandu kada pokrenete Electrum. Možete i to instalirati ako želite koristeći uputstvo iz ovog posta. 9. Kada sve to završite, kreirajte transakciju u vašem novčaniku i pošaljite je. I kod Electruma imate opciju da kopirate raw transaction pa da je pošaljete preko mempool.space stranice kako sam objasnio u koraku #11 iznad. Da biste uradili to, potrebno je da prvo potpišete transakciju u Electrum-u a zatim klikate dugmad "Preview > Share > Copy to clipboard." Kopirani niz zaljepite na stranici https://mempool.space/tx/push. Kako poslati bitcoin transakciju i platiti manje od 1 sat/vByte sa Sparrow Wallet?2.2.4 beta verzija Sparrow Wallet-a podržava slanje transakcija gdje su naknade manje od 1 sat/vByte. Međutim, korisnik mora promjeniti minrelaytxfee opciju u postavkama svog servera kako bi podržavao transakcije s nižim naknadama ili se konektovati na node koji već ima ovu postavku prilagođenu. Novo: Ova opcija je sad dostupna u zvaničnoj 2.3.0 verziji softvera! 1. Preuzmite 2.2.4 beta verziju Sparrow Wallet-a sa https://github.com/craigraw/beta/releases/tag/2.2.4-support-minrelaytxfee ili ažurirajte svoj softver na verziju 2.3.0. 2. Konektujte se na server koji je promijenio minrelaytxfee opciju ili sami izvršite potrebne promjene u svojoj bitcoin.conf datoteci. Postavke za naknade se također mogu promijeniti " editovanjem Sparrow config file datoteke u Sparrow home i promjenom vrijednosti minRelayFeeRate na vrijednost >= 0.0 i < 1.0." Ako server na koji ste spojeni nije ispravno konfigurisan, dobit ćete grešku pri slanju transakcije. Kako poslati bitcoin transakciju i platiti manje od 1 sat/vByte sa Blue Wallet?Posljednja 7.2.1 verzija Blue Wallet-a podržava slanja transakcija sa naknadama manjim od 1 sat/vByte. Morate biti konektovani na server koji je konfigurisan da dozvoljava slanje takvih transakcija. Evo šta treba da uradite da biste do podesili. 1. Ulogujte se na svoj Blue Wallet. 2. Kliknite na tri tačke koje se nalaze u gornjem desnom uglu. 3. Kliknite na "Network", a potom na "Electrum Server". 4. Trebate unijeti podatke o serveru i broj porta u polje "Preferred Server" o serveru koji dozvoljava slanja transakcija sa naknadama manjim od 1 sat/vByte. Možete se konektovati na electrum.loyce.club ili electrum.labrie.ca jer je potvrđeno da ta dva servera rade i na Blue Wallet. Unesite 50002 za broj porta. 5. Kliknite "Save". 6. Ako ste unijeli ispravne podatke, Blue Wallet će prikazati notifikaciju da je server promijenjen. 7. Restartujte aplikaciju da bi se promjene sačuvale. 8. Nakon ponovnog pokretanja provjerite u postavkama servera da ste konektovani i da je server online. 9. Kreirajte i pošaljite svoju transakciju kako to obično radite. Ako imate pitanja, slobodno pitajte. Imam namjeru da proširim ovo uputstvo i na listu dodam postupak za slanja ovakvih transakcija sa Sparrow i Blue Wallet novčanicima u budućnosti ako za to bude potrebe. |
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A bitcoin investor who has been in the game since 2017 claims to have lost his life savings of 7,4 BTC to a scam a few weeks ago. He calls himself Bitcoin Jimmy on X. This Jimmy believed he was downloading a genuine version of a Sparrow Wallet app for his iPhone from the App Store. In reality, it was fake software designed to steal crypto after you import your seed. Sadly, Jimmy fell victim to one of the oldest social engineering schemes in cryptocurrency. Somehow, Apple allowed this fake app on its platform, and Jimmy trusted it without verifying its existence on Sparrow Wallet's official website. This isn't the first time Jimmy has had difficulties and made wrong decisions. He lost Bitcoin when Celsius collapsed back in 2022. Bitcoin Jimmy has been in Bitcoin for many years, but he has sadly not devoted enough time to learn the basics to keep his money safe. He even confirmed that he was using a Coldcard Q coupled with Sparrow Wallet on his desktop. Still, he believed importing his seed into a hot wallet (genuine or not) and destroying his cold storage in the process was a good idea. This unfortunate incident could easily have been prevented. What could Bitcoin Jimmy have done better, and what can you do to protect yourself? - Coldcard is an airgapped hardware wallet. Your seed is offline with it. He should never have imported it into a hot wallet, regardless of which one. - Bitcoin Jimmy should have done due diligence and checked personally if the Sparrow Wallet on the App Store was a legitimate software mentioned on Sparrow's website. - His Coldcard + Sparrow Wallet (desktop) setup was already working. He shouldn't have substituted security for convenience by trying to set up a mobile wallet in such a bad way. - Bitcoin Jimmy should have learned how to set up a companion app for his cold storage properly. It makes me wonder how he did it originally with his Sparrow Wallet. - Jimmy should have asked questions before acting and downloading fake software. Here is an image that he posted of the fake app that he downloaded:  Sad and unfortunate that this is, beginners can still learn from Jimmy's mistake and do better if and when they find themselves in a similar situation. You can read his entire story below: https://x.com/Bitcoin4Jimmy/status/1950617736373006823 |
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If you want more information on border wallets I suggest you read Are border wallets a modification of brain wallet?I haven't seen other posts mentioning that Sparrow has a feature allowing users to create border wallets. I am not a proponent of this type of wallet, but it's still a hot wallet option you can use when travelling and/or crossing borders. I see no reason why you would make this your standard, every-day wallet, though. How to Create a Border Wallet in Sparrow1. Open Sparrow and click "New Wallet." 2. Name it and click the "Create Wallet" button. 3. Under "Keystores" click on "New or Imported Software Wallet." 4. Click the dropdown menu next to "Mnemonic Words (BIP39)" and select "Border Wallets Grid." 5. On the Border Wallets Grid window click the "Generate Grid" button at the bottom left. 6. On the new window that pops up click "Generate New." 7. The software will generate 12 words. You can but you don't have to back this up. The words inform the software about the order in which to put all possible seed words (2048) into the Border Wallets Grid. 8. Click "OK" and save a copy of the grid on your computer. 9. Draw an image pattern on the grid by clicking on 11 or 23 boxes in an order you can remember (an example image is posted below). You need to remember where you started and the pattern which you created. 10. Click "OK." 11. The words you selected in the previous grid will be automatically selected and you need to enter the last word (12th or 24th) manually. You have to remember this last word and/or write it down somewhere/back it up. 12. When you are done, click "Create Keystore." 13. Click "Import Keystore." 14. Click "Apply" and enter a wallet password if you want. You have now created a new Bitcoin Border Wallet in Sparrow. Keep copies of you Border Wallet Grid that Sparrow created because you will need it in case of wallet recovery. The grid itself can't be used to steal your coins without knowledge of the correct image pattern. You can save the file digitally anyway you want because there is no sensitive information in it. How to Recover a Border Wallet in Sparrow1. Open Sparrow and click "New Wallet." 2. Name it and click the "Create Wallet" button. 3. Under "Keystores" click on "New or Imported Software Wallet." 4. Click the dropdown menu next to "Mnemonic Words (BIP39)" and select "Border Wallets Grid." 5. On the Border Wallets Grid window click the "Load PDF" button at the bottom left. 6. Find the location where you previously saved your Border Wallet Grid and open it. That loads the grid with the words in the same order you previously created. 7. Draw your pattern in the correct order and click "OK." 8. Select the 12th/24th word that you previously used in the dropdown menu. 9. When you are done, click "Create Keystore." 10. Click "Import Keystore." 11. Click "Apply" and enter your wallet password if needed. Here is an example of a filled out Border Wallet Grid:  Credits go to Ben from BTC Sessions. That's where I found the info on Sparrow's Border Wallets. Unlock Sparrow Bitcoin Wallet’s Hidden Power: Advanced Features Tutorial |
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Several authors have submitted a BIP draft, suggesting a future consensus upgrade in the Bitcoin network and switch to a quantum-resistant cryptographic standard. I will write a short summary of the paper below. Authors: Jameson Lopp Christian Papathanasiou Ian Smith Joe Ross Steve Vaile Pierre-Luc Dallaire-Demers This is a three-phase plan to migrate Bitcoin to a new post-quantum cryptographic standard. In it, the authors suggest adopting the already proposed P2QRH output types and abandoning ECDSA/Schnorr signatures. The BIP requests a mandatory switch of cryptographic signatures due to concerns of ECDSA/Schnorr being vulnerable to future quantum computers. As mentioned, three phases are suggested. Phase A is a soft fork. - At this stage, Bitcoin is supposed to stop creating new outputs using existing public key formats. - Sending Bitcoin should only be possible to the new quantum-resistant P2QRH outputs. - Users must start migrating their funds to the new proposed standard. - This activation is proposed as soon as P2QRH outputs become available on the network. Phase B- A deadline will be announced after which it won't be possible to spend and sign using legacy ECDSA/Schnorr signatures. - This requires a consensus rule change, where nodes will reject the old signature formats. - Quantum-vulnerable UTXOs become unspendable. - The recommended deadline is around 5 years after the activation of Phase A. Phase C (Optional)- A feature could be introduced to recover old legacy UTXOs that were not migrated in time. - Users in possession of private keys and seeds of old legacy inputs could then still recover their coins. The BIP requires a change to Bitcoin's consensus and prior activation of BIP-360, introducing P2QRH (quantum-resistant) outputs. The authors encourage an earlier adoption of quantum-resistant standards and prevention of future hard forks and chain splits if/when quantum computers become a real threat. What does everyone think about this BIP? If you want to read it in its entirety, you can do so here: bip-post-quantum-migration.mediawiki |
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After Ledger announced that they will be phasing out support for the Ledger Nano S and retiring it soon, several companies used the opportunity to offer their devices at a discount. I have collected what I could find below: Current discounts for hardware wallets: - Coldcard: Use promo code - "UPGRADELEDGER" to get a 10% discount at checkout.
- Cypherock: Use promo code - "hardwarewallets" to get a 34.57% discount on the Cypherock X1.
- D'CENT: One Biometric Wallet is 12% off, the 2x package is 24% off.
- Blockstream Jade: Use promo code "RETIREMENTPARTY" to get 12% off on Jade and Jade Plus.
- KeepKey: Use promo code "HARDWAREWALLET23" to get a discount on the KeepKey Classic.
- Keystone: Use promo code "SNS" to get 25% off on the SNS co-branded Keystone 3 Pro. *Valid until Sunday at 12:00 UTC
- Tangem: Use promo code "SUMMER10" to get a 10% discount on all purchases in the Tangem shop.
If you see similar discounts from other brands, don't hesitate to mention them below and I will add them to the list in the OP. |
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