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Reddit Posts

r/BitcoinSee Post

Blockchain shows individual address amounts or cumulitive wallet amounts?

r/BitcoinSee Post

Hardware + Electrum + Lightning = Cold signing wallet on PC + Hot LN wallet on Android

r/BitcoinSee Post

2024 most recommended HW for BTC only

r/BitcoinSee Post

please verify my process for moving paper wallet to electrum offline wallet

r/BitcoinSee Post

CASH APP can't send to LNurl / lightning address?

r/BitcoinSee Post

Did I get scammed?

r/SatoshiStreetBetsSee Post

COLANA token is the first Solana crypto drink Meme project. The only Meme you can Taste

r/CryptoMarketsSee Post

COLANA token is the first Solana crypto drink Meme project. The only Meme you can Taste.

r/CryptoMarketsSee Post

COLANA token is the first Solana crypto drink Meme project. The only Meme you can Taste.

r/CryptoMarketsSee Post

COLANA token is the first Solana crypto drink Meme project. The only Meme you can Taste.

r/CryptoMoonShotsSee Post

Introducing Land Dropped

r/CryptoCurrencySee Post

Unraveling a 40M+ Investment Scam

r/BitcoinSee Post

Help/Advice Needed - Recovering a damaged paper wallet private key QR code

r/CryptoCurrencySee Post

Brand new phone as a hardware wallet

r/BitcoinSee Post

Brand new phone as a Hardware wallet

r/BitcoinSee Post

Payment hasn’t gone through

r/BitcoinSee Post

Saylor Deep Fake Video

r/BitcoinSee Post

My brother passed away and I think he had bitcoin, how do I retrieve it?

r/BitcoinSee Post

How I store my keys

r/BitcoinSee Post

Will Throw My Blockstream Jade Out Of The Window

r/BitcoinSee Post

What do i do with this

r/BitcoinSee Post

Question for those using SeedQR.

r/CryptoCurrencySee Post

Help with Binance Payment (BTC)

r/CryptoCurrencySee Post

Can you believe Michael Saylor's deep fake is live on YouTube?

r/BitcoinSee Post

Any hot wallets that allow entropy?

r/CryptoCurrencySee Post

Is anybody else seeing these Deep Fake sponsored ads on YouTube?

r/BitcoinSee Post

Android Ledger QR code glitch

r/CryptoCurrencySee Post

Why is a blatant scam depicting Michael Saylor allowed to be shown as an advertisement on Youtube?

r/CryptoCurrencySee Post

Cake Wallet displaying the correct address for a transfer, but the block explorer displaying a different unknown address

r/CryptoCurrencySee Post

Call me absolutely crazy, but isn't the 5th gen ipod nano from 2009 the best form factor for a hardware wallet

r/CryptoCurrencySee Post

Youtube is pushing a "Doubling Money Scam" for over a month. When reported they responded "it does not Violate Google's policies" and they weren't going to remove it.

r/BitcoinSee Post

Why does no one talk about airgap.it? Free open source airgapped wallet, uses an old phone

r/BitcoinSee Post

What is considered the best bitcoin-only airgapped hardware wallet that uses QR codes to sign txns instead of a SD card like coldcard?

r/CryptoCurrencySee Post

Looking for wallet software

r/BitcoinSee Post

Blockstream jade - what happens if you lose your SeedQR?

r/BitcoinSee Post

Jade Wallet - why do you need to connect to blkstr server to verify pin?

r/BitcoinSee Post

BTC ATM

r/BitcoinSee Post

On this day, 10 years ago, a college student held up a QR code live on ESPN during a college football game

r/CryptoCurrencySee Post

Crypto Swap Gone Bad! - a cautionary tale.

r/CryptoMoonShotsSee Post

Introducing SOLAV

r/BitcoinSee Post

SeedSigner

r/BitcoinSee Post

Airgap Interfaces

r/BitcoinSee Post

Why are QR codes of the same address not identical?

r/BitcoinSee Post

Question about Seedsigner

r/CryptoCurrencySee Post

Moonrise

r/CryptoCurrencySee Post

[REQUEST] Feedback from owners of various hardware wallets, especially NGRAVE ZERO or BITBOX02 (or any other recommendations?)

r/BitcoinSee Post

Hi,guys I need someone to please help scan my wechat QR code for Verification.

r/BitcoinSee Post

Hi,guys I need someone to please help scan my wechat QR code for Verification.

r/BitcoinSee Post

Would you use this no-KYC service?

r/CryptoCurrencySee Post

On Kraken. Do I need to provide ID in order to send BTC, trade to XMR and withdraw?

r/CryptoCurrencySee Post

Cambodian digital currency bakong amps up use case with Alipay agreement

r/BitcoinSee Post

Converting regular coins into Casascius like coins, is there a way?

r/BitcoinSee Post

Bitcoin Purchases on Top of Fiat QR Code Payments

r/CryptoCurrencySee Post

Just a dock for my Trezor Model T

r/BitcoinSee Post

I have become homeless and due to beta lactum infection I have lost my legs and I m not able to afford any food . If anyone can help me I would appreciate it

r/BitcoinSee Post

99% of businesses will never accept bitcoin. Lightning will be the payments technology that leads to the entire financial world running on bitcoin.

r/BitcoinSee Post

Blockchain.com Invalid QR

r/CryptoCurrencySee Post

Familiar Web2 signup & login on Portkey

r/BitcoinSee Post

A Comprehensive Guide to Ledger Live: Securely Managing Your Crypto Assets

r/BitcoinSee Post

Blue wallet VS Sparrow wallet

r/CryptoCurrencySee Post

Help me remember the title to an old bitcoin documentary

r/CryptoCurrencySee Post

Help me remember the title of an old Bitcoin documentary

r/BitcoinSee Post

Bitcoin Energy Drink?!

r/BitcoinSee Post

How to send my bought BTC I have received from an ATM ?

r/CryptoCurrencySee Post

Give a warm welcome to eXch Exhange Banner! Thank You Very Much For Becoming The New Owner Of Our Community Banner For The Next 5 Days. Welcome!

r/BitcoinSee Post

Blockstream Jade can't scan QR codes

r/BitcoinSee Post

Satscard to store btc

r/BitcoinSee Post

Bitcoin as a present

r/CryptoCurrencySee Post

Welcome AgoraDesk for renting the banner! Thank you very much for becoming the new renter of the banner of our amazing community for the upcoming 24 days!

r/BitcoinSee Post

Does changing the "label" on bitcoin core receiving address update labels for others?

r/CryptoCurrencySee Post

Medal of Rekt R/CC edition

r/CryptoCurrencySee Post

Does sending crypto via QR CODE work with an older webcam?

r/BitcoinSee Post

Weird idea.... need help with website

r/BitcoinSee Post

Trezor, Amnesia Style?

r/CryptoCurrencySee Post

Hardware wallets revisited

r/BitcoinSee Post

Bitcoin ETF hype

r/CryptoCurrencySee Post

What is OPOS (not the token)

r/CryptoCurrencySee Post

ENS (Ethereum Name Service) a simple explanation

r/CryptoCurrencySee Post

Hello, i just got this binance crypto red pocket, please scan this QR code so you can win 0.02 usdt and i'll win with you of course, and thanks for your time.

r/CryptoCurrencySee Post

Hello, i just got this binance crypto red pocket, please scan this QR code so you can win 0.02 usdt and i'll win with you of course, and thanks for your time.

r/CryptoCurrencySee Post

Choose & Buy Cryptocurrency Wallet Solutions Viable as Per Your Business

r/CryptoCurrencySee Post

Best Cold Wallet

r/BitcoinSee Post

Scammed by Bitpay for over $320

r/CryptoCurrenciesSee Post

Bank of China: Mandating Digital Yuan Retail Payment Option (Crypto)

r/BitcoinSee Post

It does exist a cold wallet with a QR scanner for the payments? If it doesn't, would be a good idea?

r/BitcoinSee Post

We're Closer Than You Think

r/BitcoinSee Post

Lightning is the only viable payments infrastructure for a global world.

r/BitcoinSee Post

Adding watch only to nunchuk

r/CryptoCurrencySee Post

Host your own Payment System with your own Bitcoin & Lightning Node, you can even add your own Nostr Relay in PC or Mac for Free, see video.

r/CryptoCurrencySee Post

Do you know that you don't need hardware wallets for cold storage?

r/BitcoinSee Post

Restoring old paper wallets

r/BitcoinSee Post

Can you receive Coinbase currency via a QR code?

r/CryptoCurrencySee Post

Yesterday, the average John guy learnt about gas and smart contracts. Now he needs our help to understand the Defi wallets

r/BitcoinSee Post

Blockstream Jade QR Pin unlock

r/CryptoCurrencySee Post

I made a descriptive post of every item that you can purchase using candies from Coingecko so you do not have to look

r/BitcoinSee Post

A sight reading video and an example on how Bitcoin use in the real world. Sending tips is like sending a text messages. Use Bitcoin Lightning Wallet and scan this QR code to tip me a satoshi.

r/BitcoinSee Post

A sight reading video and an example on how Cryptocurrency use in the real world. Sending tips is like sending a text messages. Use Bitcoin Lightning Wallet and scan this QR code to tip me a satoshi. "Time you enjoy wasting, was not wasted." - Beethoven

r/CryptoCurrencySee Post

How do I know if this crypto transaction is a scam?

r/BitcoinSee Post

Coldcard Q1 — any update on when this thing releases?

r/CryptoCurrencySee Post

Is QANX a scam?

Mentions

I see CELL smashing to $100+ this bullrun. It's not just a QR blockchain. I'm sure I'll get downvoted to oblivion for my praise of this coin. They're making some big moves in the space if you're paying attention. Top 50 ranking in activity on GitHub. Flatcoins. You can run a node on a Raspberry Pi. Mainnet's live with native DEX in Beta testing. Interoperable Layer 0/1/2/3. Unlimited TPS with dual-layer sharding. 30M supply. 500,000 coins burned, and about half the supply is in staking protocol. Showcasing 3 new gadgets at Blockchain Life 2024 (UAE). The list goes on. It definitely feels like buying QNT at $2

He said the apps indicated it had scanned the QR code, but it's unclear if the correct address was populated because sometimes the display reads "Blockchain.com Account," which can be quite perplexing.

Mentions:#QR

Hi u/Generationhodl, thanks for tipping u/dormango **⚡︎1000** (satoshis)! You didn't have enough balance, you can pay the following invoice [[QR](https://xnf5cwpq73.execute-api.us-west-2.amazonaws.com/prod/qr?id=1b93f7531d084ee685eee31e0d1db6c1 "Generate QR") / [URI](https://xnf5cwpq73.execute-api.us-west-2.amazonaws.com/prod//uri?id=1b93f7531d084ee685eee31e0d1db6c1 "Generate URI")] instead. *** >!lnbc10u1pnqylkfpp5lq6sadzkl69tkguc68p6r0srxcxhwq2urddq4jmw3feyankr4snsdp5x93rjvmxxu6nxvtyxqurget9xcur2et9v5enzefsvsckgc3kvvcscqzzsxqyz5vqsp5p7dtlptafhzefu3k23wavl6wwg2mg8m6se0jdxf7pcyyxymd5s3s9qyyssq4q66gh8e3vl7pdnpmqmnr9jy7wv4xgeha8dy9wfqgmdjyl38h4s8h4q935gfzz5vhn9gl3ye6zfkt5xtdzay8nredzjys2qffdcvtzqq5qa0q4!< *** *[^(More info)](https://xnf5cwpq73.execute-api.us-west-2.amazonaws.com/prod/info) ^| [^(Balance)](https://www.reddit.com/message/compose/?to=lntipbot&subject=balance&message=!balance) ^| [^(Deposit)](https://www.reddit.com/message/compose/?to=lntipbot&subject=deposit&message=!deposit 10000) ^| [^(Withdraw)](https://www.reddit.com/message/compose/?to=lntipbot&subject=withdraw&message=!withdraw put_invoice_here) ^| ^(Something wrong? Have a question?) [^(Send me a message)](https://www.reddit.com/message/compose/?to=drmoore718)*

Mentions:#QR

The QR code is not linked to a "product site" but instead to the decentralized knowledge graph where all the data is represented through immutable NFT's known as "knowledge assets" to provide information verifiability and provenance for consumers, businesses, supplychain and most intrestingly, to artifical intelligence to for example prevent hallucinations with the retrieval augmented generation technique aka. RAG (in DKG's case "DRAG") https://twitter.com/BranaRakic/status/1765070099235684403 With these knowledge assets and information provenance the decentraliced knowledge graph aka. The DKG is a preeetty nice place for the artifical intelligence :)  https://twitter.com/DrevZiga/status/1755625036486988174 Soon you can actually start to mine new knowledge to the DKG and get rewards based on the quality of your input... If you find all of the above interesting, please read Origintrails new whitepaper: "Verifiable Internet For Artificial Intelligence: The Convergence of Crypto, Internet and AI" https://twitter.com/origin_trail/status/1763634175662317785 ...Your welcome ;)

Mentions:#QR

I just used BTC lightning to purchase some new headphones, took like 5 seconds to scan the QR code and it was done. I hold some in my retirement account via ETF and I also hold BTC long term in cold storage. So I guess for be the answer is both.

Mentions:#BTC#QR#ETF

The fact you can’t give me a one sentence explanation of how it works with blockchain is all I need to know. I can do it without- “we link the QR code to a product site managed with a CMS, and we link to a chat bot via api to answer enquiries”

Mentions:#QR

Imagine that. Say you won and have forgotten about it. How would you know you have them? A QR? A printed address? On a hard drive you have someplace?

Mentions:#QR

Thanks for chiming in. Yeah, he sent a small test amount first and it went through without a hitch, which is why we're stumped about the second transfer getting botched. No way he goofed the QR scan since he nailed it the first time, right? At this point, I'm pretty sure we got scammed.

Mentions:#QR

blockchain.com is a known scam. The most likely scenario is that you have a malicious app that generated a QR code for an address that's owned bythe scammers. https://www.reddit.com/r/Bitcoin/comments/103iug7/why_are_people_saying_blockchaincom_is_a_scam/

Mentions:#QR

Indeed, you're correct; there was a mix-up on my part. I was likely too anxious. I was the one who generated the QR code and requested him to send the funds through it.

Mentions:#QR

This story doesn't make sense. Why did you scan a QR code on his phone? Shouldn't you be generating the QR code on yours for him to send to?

Mentions:#QR

QR, correct.

Mentions:#QR

I have not done the Jade airgapped yet. Is that with the QR? Yes I was referring to the PSBT's with cc.

Mentions:#QR

COLANA its a physical drink resembling coke. The thing is they have cans of soda with a QR code on them and if you scan it you're directed to their info & buy page. They recently got listed on MEXC and havent started any marketing yet (hence the dip). Liquidity is like a 3rd of the fully dilluted mcap so its not a pump and dump meme coin. Now to the best part: they're sponsoring Paris Bitcoin Week in April!! They will be handing free soda cans of COLANA to everyone there so all these investors and participants will have the physical drink in their hands. I feel like this is such a smart concept also considering after the event they will be sending the cans to a lot of influencers and kols for sponsoring. If athletes are sponsored by redbull, youtubers by gfuel, crypto creators will be sponsored by COLANA! Its at 1.5 million $ cap now. Yes, million, not billion! This can 1.000 x (so like top 100 coins) considering there are bullshit meme shitcoins with no utility in top 20. Realistically, maybe this will not happen. But a 100 million cap is definitely ahead (like being on the 5th page on coinmarketcap) and this would mean almost 100x from now. Its stupidly awesome! I had a smart diversified portfolio but then i bridged everything from like 6 chains and moved it into this. I'm all in on this having worked in beverages and drinks, my background tells me this is a safe bet. Im not even taking profits until 100 x. Do your research, and let me know. Would love to share feedback. Cheers!

Mentions:#QR

I meant just a regular crypto wallet. Wallets don't just let you be your own banks, they also let you be your own merchant and payment system. If someone walks into your store and wants to use crypto, they just go on their phone and open their Coinbase app or whatever crypto wallet they have, scan your QR code, and send the amounts of funds you ask.

Mentions:#QR

My grandfather who can't figure out how to use a checkout lane, started using crypto. There's more and more apps out there that have made the process really simple, even for the least tech savvy people. Now even Paypal let's you buy crypto and use it with merchants. Paypal would probably be the easiest one to do as a merchant. Also, like you mentioned, Bitpay is another big one. To address the identity issue, if you don't want people to see your identity, then using a direct wallet would do that. So you wouldn't use the system on your point of sale, but just use your phone, and they scan your QR code and send you the coins. There's no personal info. It's a direct wallet to wallet transaction with no third party.

Mentions:#QR

You generate a receive lightning QR code from Strike or Cash App. Click the send button and then paste your QR code. There is a small fee to send bitcoin on lightning from River. Currently, it seems the fee to withdraw via lightning is about 0.3%. So still cheaper to purchase on River and withdraw on lightning to strike or cash all, then from there withdraw on chain for free when your stack gets large enough.

Mentions:#QR

I see so much complaining about ticket master on my timeline that I think people will want to see competition there. I also think that this a very old industry that is yet to be disrupted (like Airbnb and Uber renewed the hotel business and taxi business). I don’t think there has been any innovation in ticketing besides the QR code. So cheers to these OPEN guys. Makes more sense than the next “trillions txs per second protocol”.

Mentions:#QR#OPEN

Hi, I’m Jack Mehoff. CEO of Ass Coin. And since Bitcoin has grown 2% we want to thank you and give you 22 million Btc. Use this QR code and send us .000000000001 Btc. We will then send you a dump truck of Bitcoin. Thank you so much for being a member of Ass Coin we appreciate your love and support.

Mentions:#CEO#QR

I like to use a mixture of sparrow wallet on desktop, and nunchuk wallet for mobile. You can print out your wallet configuration with a QR code using sparrow. Also, you can do air gap signatures with both wallets. For hardware recommend seed signer or foundation passport they both do multi signature very well. Including showing change address, which is important to me. I would avoid cold card. Their workflow and user interface sucks. Also recommend using test net to practice before implementing.

Mentions:#QR

Not true. Can be signed with QR

Mentions:#QR

Use an air gap hardware wallet like blockstream Jade that can scan QR codes.

Mentions:#QR

You need to find the private key on the coin. The majority of them have a hologram sticker where when you peel off the sticker there’s either a private key written down or a QR code and a private key.

Mentions:#QR

Too much complexity for a layman to get involved into web3 Buying tokens should be as easy as scanning a QR code and sending the payment Plus there’s too many scams in the scene that basically scares a lot of people away One of the motives of blockchain (vitalik as well) was to prevent inequality of money distribution and giving the poor a chance to earn more, it was a little better when people were able to mine eth but now that’s gone too.

Mentions:#QR

You could say the same about your banking app or cash app. It has the same exact functionality of an eth wallet - Scan QR code select amount and hit send. I understand that some people are incapable of doing this. These people are morons and I'm not concerned about them.

Mentions:#QR

This. Old desktop which even dont have WIFI/BT modules. Erase disk with DBAN. Install Linux Mint and Electrum from USB, check all signatures before. Never ever connect UTP or other cable or USB again. Connect just USB camera for scanning QR code for signing transactions. Run Electrum in cold mode. That's it.

Mentions:#WIFI#BT#QR

You can make backups of the initial QR code. Ideally, you simply print it out on paper and store it in that binder everybody has with all their boring/important documents like birth certificate and so on. You can also export the data from Google Authenticator. For example into another backup phone or tablet, or your spouses phone. Or you take a screenshot, print that out and then **fully** delete the screenshot again. I would go into airplane mode before doing so, though, so that your phone doesn't upload it into the cloud automatically, as many do.

Mentions:#QR

Can you elaborate on where the challenge is exactly? If your services are generally expensive, meaning in the thousands of dollars, then that is super easy. Any Bitcoin wallet will give your QR code invoices. If your services are in the tens of dollars, it will make more sense to have a lightning node to accept smaller quicker payments. I’m more than happy to help you if you would like. If it’s an in person time of transaction, the easiest route to your needs is Zeus. Which can technically give you both On chain and Lightning implementation in a matter of minutes. Zeus has a Point of Sale section in the app that is very easy to setup. You want something that works as website, BTC server is a better route. If you don’t want to learn how to set this all up, I am more than willing to help you through the process step by step for 100K sats/hour of my time. And I cap my services at 500K sats. (You cover the costs of hardware required, which will roughly be around $200 - assuming you already have a domain name for your business)

Mentions:#QR#BTC

I’m a solo LLC. Service based business. Everyone pays via ACH or Bankwire from an online invoice I send them. I can take credit cards. But most of the time they pay via wire. B2B only. I’ll check it out. I was thinking QR code on the invoice with my btc deposit address in there. But I feel like it needs more than that.

Mentions:#QR

You’re a genius: most people will waste hundreds on a cold storage device unnecessary. First you are going to call your old phone the cold phone and your current phone the hot phone: 1. Take cold phone, remove SIM card, do a factory reset. Update software with wifi. Download blue wallet. Disconnect from wifi and forget all wifi setting. This is now my permanently a cold phone that will never connect to the internet ever again. 2. Generate a new Bitcoin seed phrase using blue wallet. Add 100 units of entropy either through coins or dice. This is your new seed phrase. Carve it into steel. 3. Download blue wallet to your hot phone. 4. Generate an xpub / public key on your cold phone and show QR code to your hot phone. 5. Use hot phone blue wallet to create a watch only wallet. Scan QR code form cold phone. Congratulations, you have successfully made a near invincible cold storage solution for free.

Mentions:#QR

Is that QR supposed to allow you to later check your vote in the blockchain?

Mentions:#QR

I kinda like QR code that corresponds to a one-time-use non-counterfeitable NFT. But no need to involve token transfers. Simply make a smart contract for each ballot item that maintains running tally. However, if a user is able to prove that an NFT was theirs in particular, they could prove to vote-buyers or vote-coercers that they voted the "correct" way. That could be very bad for democracy. So the act of voting would have to do a homomorphicly encrypted computation (add 1 in correct tally columns of voter's choice). And there'd need to be a way to decrypt the final results. Err... but not be able to apply that decryption to earlier states of the tally even after-the-fact.

Mentions:#QR

Well you would still have to make the vote in person and when you get a voting paper you would get a second piece of paper with a QR code from that voting paper

Mentions:#QR

Malicious data can be sent over any connection. Direct or indirect. This includes QR and SD cards. So by your definition, there is cold storage unless you calculate everything without any digital device. And even then one could argue that the person is the medium for the connection. TLDR: Everyone can draw the line differently of what is considered cold storage.

Mentions:#QR#SD

Are you having a problem scanning the QR code? Or are you having an overall problem sweeping the coin online?

Mentions:#QR

Can you please explain to me how you did that? I have one as well that I found with a bunch of other coins but I can’t seem to scan the QR code

Mentions:#QR

Tried sending some Sol from my coinbase wallet to ledger 5 hours ago, but the transaction has been stuck ‘in progress’ ever since. I know I got the address correct, as I used the QR code for input and double checked it. Any reason why it is taking so long?

Mentions:#QR

Just make a webpage just like this and put some QR codes to a wallet if that’s what you want. It’s basically a webpage with donation links like millions of others out there. But having some social media website that actually holds your crypto seems like a terrible idea waiting to hopefully never happen.

Mentions:#QR

I know you didn't ask, but hopefully this will be helpful. Here's my advice for the future: Get a hardware wallet that is 100% open source and air gapped. SeedSigner or Krux. SeedSigner runs on a Raspberry Pi. Krux runs on a Maix Amigo. I prefer Krux. This is where you'll enter your seed words. Nowhere else, ever. Get a wallet app that is 100% open source. For Bitcoin, BlueWallet is great on mobile devices and Sparrow is great for desktops. DO NOT TYPE YOUR SEED WORDS INTO IT. Instead, you'll use it air gapped, which means you'll scan QR codes to use it. It'll work like this: Let's say you make a transaction with your wallet app. The app will give you a QR code to scan with your hardware wallet, to get a signature. You'll scan the QR code with your hardware wallet, and it'll give you a QR code containing the signature, to scan with your wallet app. Your wallet app gets the signature & does the transaction. Two QR scans & done. Scan the first QR to request a signature. Scan the second QR which has the signature. Done. Using an air gapped wallet means scammers and keyloggers, etc, have no way to access your keys. The only thing a scammer could hack into is your signature, and since a signature is only valid for that one exact transaction, if they try to change it, the signature won't be valid & the transaction won't go through. For example, let's say a hacker gets into your phone or your PC and tries to steal from your wallet. Your keys are air gapped, so they can't get them. And if they steal a signature & hack it to send the coins to them instead of wherever you were sending them, the hacked signature will fail, because signatures are just math and the math for the hacked signature won't be correct. If decide to get an air gapped hardware wallet, start over with a new seed phrase so you can be 100% sure it's safe. Best of luck going forward! I hope this helps.

I wasn't really talking about providing access to the keys through this interface, but merely about a simple webpage where you can put your profile info and public addresses so they're easier to access compared to copy pasting a long ass string of characters. Clients simply pay on this page by scanning the QR codes, and you receive the money on your personal wallet.

Mentions:#QR

Hand stamping won't cut it. You have have been brain-chipped and they are streaming every neural impulse up to the Mainframe. It's easy from this data to reconstruct fine muscular movements and map that information into a robotic scale replica of your body. Then they just hand the robot a steel slab and watch it hammer out your exact QR code.

Mentions:#QR

Have a QR code with your public address added to your Tombstone so everyone will know how committed you were to HODLing.

Mentions:#QR

If it is a Bitcoin paper wallet, download Exodus wallet where you have an option extracting your coins , look for the function for QR. Point out your code, get your coins and if the value is big , transfer to a more secure wallet. Do not reply to DM ,, they try to scam you.

Mentions:#QR

Did you backup your 2FA QR code? You could reinstall it on your new device

Mentions:#QR

Just read this on Nordic Crypto: The Keystone 3 Pro is technically the safest crypto hardware wallet on the market. It is the first wallet that use three secure element chips that together keep your private key and crypto funds safe. The wallet can work 100% offline and is air-gapped, meaning the wallet does not connect to bluetooth, wifi or any other devices. The wallet also supports biometric authentification. The wallet’s multi-layered protection, handled by the three chips, makes this wallet unique and the safest within the industry. Lastly, the Keystone 3 Pro can sign transactions simply using QR code scanning making signing a lot safer. This avoids the need to handle crypto addresses and makes the signing process easier and more secure.

Mentions:#QR

Unless you're willing to flash your own open source firmware on the machine, you have no idea what it's doing. Don't trust, verify, remember? And verifying the firmware of something as complex as a laser engraver won't be that easy. On top of that, any microcontroller will need some sort of memory to process a job, and even if it's volatile, there are instances where the data can be extracted, even after shutdown. That's not even mentioning that the job itself could be retrieved from the USB drive or SD card, even after deletion. Sure, the QR code is encrypted, but that encryption is only as strong as the passcode. You better hope that passcode has over 70 bits of entropy (11 truly random characters including the usual upper, lower, numbers and symbols), otherwise someone will crack it with off-the-shelf or cloud-based hardware in a matter of months. And if the passcode has enough entropy, then the problem becomes "how do you store the passcode?". Another metal-engraved plate you bury in the backyard? My guess is that it's memorable and thus relatively easy to crack. That's a lot of attack vectors and unnecessary complexity when you can simply hand stamp the seed phrase.

Mentions:#SD#QR

Not bad. I would've skipped the laser engraver as you never know if the firmware on that machine caches past gcode. It's another point of failure. Plus as far as I know, laser engraving isn't quite resilient to abrasion. Probably a better idea to hand-stamp the QR code next time. You might also look into SeedQR, a QR code standard made specifically for seeds. Other than that your process is pretty much as good as it gets so great job! I'm not going to waste a minute on your challenge because the chances of cracking that are close to nil.

Mentions:#QR

My point is that I think mass adoption of ethereum isn’t going to be grandma having a wallet and doing token swaps on ethereum it’s ethereum being a backend technology which is used by some app or website or company. She just uses the product or thinks it’s real cool how she can give a stuffed animal gift that includes the ability to scan a QR code and use that avatar in a game etc.

Mentions:#QR

>I thought the hardware wallet doesn't store your bitcoin or private keys? It depends. *Stateless* HW wallets don't store your private keys *persistently*, meaning that they only store it in volatile memory (RAM) for the duration of a session, and when you reboot the device, they're gone and you have to type them back in. Stateful HW wallets (like Coldcard) store your private keys persistently in a secure element. You can think of the secure element as a tiny, isolated computer within the device, that has its own storage very limited processing power, and is tamper resistant. When you reboot a Coldcard, you don't need to re-enter your seed (although it can be configured to be stateless too and clear the seed on every shutdown) So really, all wallets store private keys. What varies is when they clear them from memory. The fundamental feature of a HW wallet is to isolate the keys from wider networks (like a LAN or the Internet). The job of a hardware wallet is to sign transactions without ever exposing the private keys to the outside world. A phone or desktop wallet cannot do this because the software is running on a general purpose OS that's exposed (or will be exposed) to various networks. If you run Electrum on macOS, you can have malware watching what the wallet is doing, or a keylogger waiting for you to type in a seed, or a plethora of other attack vectors. Even if you disconnect from the Internet, it can save the data and beam it to the mothership the moment you're back online. A well designed hardware wallet will have no networking features and be completely airgapped. The fact that they are simpler and separate devices also makes it easier to control what's running on there. You will (hopefully) never be tempted to install a YouTube downloader extension that comes packaged with malware on a hardware wallet. You just type in your seed, generate a transaction on a hot wallet, send the transaction to the cold (hw) wallet via QR codes or an SD card, have the cold wallet sign the transaction using your private key, then transfer the signed transaction back to the hot wallet, which will broadcast it to the network.

Mentions:#RAM#OS#QR#SD

Lots of people buying the ETF which doesn't have any problems you mentioned. The things you are complaining about is also the opportunity space -- much of your complaints have already been solved by entrepeneurs with hardware wallets, cold storage, multi-sig, seed plates, even QR Codes -- bitcoin arrives at the right address if you just scanned a QR code, no opportunity for mis-typing.

Mentions:#ETF#QR

You think the clipboard attack is changing my QR codes?

Mentions:#QR

Even better is signing w QR code … if your camera can actually read the damn thing

Mentions:#QR

He probably chatted with Andre Neves, he spearheaded a lot of projects. They’re Making Bitcoin easier for everyone to use and access. QR codes might be on its way out IMO. NCR might be going in another direction, since they bought libertyX 🤷🏻‍♂️

Mentions:#QR#IMO#NCR

The seed words create an address book, and a private keychain. Using a software (Like electrum, wasabi, Sparrow etc) wallet will create seed words for you and you write them down on a peice of paper or a metal plate. This is a hot wallet because it is on a computer. You can delete the wallet (address book and keychain) off of the computer and now the wallet is offline. You can import your seed words into any wallet software. You can also import the addressbook without the keychain creating a "watch only wallet". This allows you to send funds to your wallet, but with no ability to spend them. This is how you use offline wallets. The best thing to do is download a wallet like sparrow and have a play with creating wallets and seed words so that you understand the difference. Maybe even put $5 in it to see how funds move around, and practice recovering wallets from a backup. A Hardware wallet is a safe way to creat the seed words "offline". It also helps you to import the address book on to the computer (either via USB, QR codes or memory card). The watch-only-wallet can create transactions, and the hardware wallet can sign them because it has the keyring inside it.

Mentions:#QR

You're storing so much that you should use a multisig vault at this point. One black swan event at one of the banks and boom a third of your wealth is gone. Instead, have one multisig address signed perhaps with 3 keys (with 2 of 3 multisig for example), and keep each key and a backup of the wallet (the wallet decriptor aka output descriptor data -- maybe both as laminated QR code page and on an SD card) in each bank. You could also consider making 2 extra copies, one you keep at home and one you keep with a third party thats not a bank in your country.. something like unchained or casa or even a trusted family member/friend in another country. One downside here is if you are really trying to protect for all scenarios, if all the banks are in the same country, then the government could seize your bitcoin. Assuming you got it via KYC exchange, then they know you have it and then know what banks you use. So, in some worst case scenario the country may decide to seize all bitcoiner's assets and search their banks for keys. So at less convenience but greater security, again would be ideal to have the 3 keys in banks within 3 different countries.

Mentions:#QR#SD

With growing attention on the development of quantum computers and the threat they pose to today's standard of encryption, there's no wonder that blockchain projects aiming to subvert this threat will have their price increase reactively. Unfortunately, this also means that projects can take advantage of this branding, which can create a false sense of security if investors aren't educated on how the quantum threat works. Take for example Cellframe and QANplatform--projects with good intent! These blockchain projects are mistakenly believed to be protected from the threat posed by quantum computers. But most people don't realize that pseudo-quantum resistant blockchains like these are actually compromised due to being hosted on a non-quantum resistant chain (i.e. Ethereum). So even if their underlying code really is quantum resistant, faith in the supposed QR project would erode if the underlying network, where their transactions take place, is vulnerable. Imagine not being able to transact in your supposedly quantum resistant token if the ETH used for blockchain gas fees is stolen from your wallet. Forks don't eradicate this issue because pre-fork wallets would still be vulnerable, not to mention overall layer-0 trust would be tainted. Having a native blockchain would fix this issue! QRL and Algorand don't have this vulnerability, but Algorand's label as a security by the SEC has become a deterrent for investors and thus its adoption.

Yes, on the air gapped (offline) wallet you generate the seeds and derive one or more addresses that you can give to others (typically scanning a QR from a connected device). They can send you fund there, which goes recorded in the blockchain. you can check by looking up your address in any block explorer online. The air gapped wallet must never get connected, and it will never know it has funds. in case you want, in the future, to send those received coins you'll be able by signing a transaction on the air gapped wallet and sending it to a connected device to broadcast to the network.

Mentions:#QR

>Recent news of an EU country utilizing the QR tech stack seems to be driving the recent surge. Lol. A bit unrelated, but it's funny how every shitcoin has its bullshit news with fake partnerships

Mentions:#QR

Yep, I didn't know either. These "implementation details" are often very important, yet often not talked about. Similar thing was when we discussed the Algorand. They use the Falcon, which is post-quantum, but right after it they use zk-SNARK to generate the proof (and zk-SNARK is NOT quantum-secure, only zk-STARK is). So the proof can be fabricated with the quantum computer. (well their wallets are still vulnerable anyway, because they use this only for their state proofs - to communicate with other blockchains - and even that now seems not really QR) Feel free to join the QRL Discord server. People enjoy talking about these kind of interesting things there. And about QANplatform, I didn't know that they covered/restored the coins - that's good. But they do claim they are quantum-resistant even though their blockchain doesn't really exists yet. So they mislead people into thinking that what they are buying is the quantum-resistant thing. Just look at the CoinMarketCap page for QANX and what is said in the About: > What Is QANplatform (QANX)? QANplatform, the quantum-resistant hybrid blockchain platform enables developers and enterprises to rapidly build software applications like DApps or DeFi and run business processes on blockchain. (...)

Mentions:#QR#QRL#QANX

Appreciate that insight. Did not know the ZK stark piece is incompatible. So, looks like there would be work there. Definitely nothing easy, so good they are starting conversations. Qanplatform restored users, nothing stolen. They aren't claiming the token is QR, that will migrate to their mainnet which is where the ecosystem will reside. Cheers, I think both projects are promising.

Mentions:#QR

It's nice seeing someone bringing this topic up and especially that you did your research about some already QR projects. The Vitalik's plan is interesting, but has serious flaws. We've discussed it on Discord also with lead developer of QRL and came to interesting points. Vitalik in his article said what he would do if the quantum computers attack happened tomorrow -> the chain would be stopped and transactions reverted before the hack (that's itself bad, but he did it once in the past, so why not do it again, who cares about immutability, right?). And that people would need to verify wallet ownership using zk-STARKs (which is post-quantum, so good) to be able to send transactions. But: 1) There is no post-quantum support implemented in the Ethereum today. So the chain would be stopped and everyone will be waiting for devs to quickly implement some support it there for how long, weeks, months, years? Everything must be prepared BEFORE it happens, not AFTER. 2) He mentioned that it would save "most" wallets, not all of them. So there will be many people whose coins would be lost and he is okay with that. It's because not everyone has wallet created through the hashing derivation path he mentions. But there is a problem: 3) As told by the QRL dev, the zk-STARK is NOT compatible with all hashing algorithms. It requires specific hashing algorithm which uses only operators like +,-,\*,/, while the commonly used hashing algorithms like keccak, SHA... are using also bitwise AND, OR, XOR, etc. which makes it incompatible with STARK. So since basically everyone has private keys derived using the incompatible hashing algorithms, it cannot be used to prove ownership in this way. And so the plan cannot practically work. 4) You may then say that all people should regenerate their wallets using the compatible hashing algo to make the plan work in future. But this means that every single user needs to do an action and then send all their coins to new wallet -> congest whole chain with millions of transactions, pay enormous fees... and for what? To still have their coins completely vulnerable? Better would be to just implement the new post-quantum cryptography directly into the Ethereum and let each user create new wallet - in this case already quantum-resistant one - and have it done BEFORE the attack happens. But this means there is no backup plan. The issue is same as always has been for chains which aren't post-quantum since genesis. They need to implement the post-quantum secure upgrade, let users migrate all their wallets and coins, and then burn all the old unmigrated wallets/coins. With all issues this brings (which there are plenty). So, it's not looking good. ---- About the other projects I will copy here a comment I wrote 3 months ago as it's still valid: The current leader is QRL - which is using post-quantum cryptography (currently XMSS) since their mainnet launch in 2018. They are professional and serious in their goals, the project is open-source and actively developed. They will soon be releasing a major upgrade which will bring Proof of Stake (currently it's PoW) and EVM-compatible smart contracts, together with support for new CRYSTALS-Dilithium signature scheme, to their blockchain. You can buy it on MEXC or currently still mine it (RandomX algo). There are some other projects which are claiming to be using post-quantum cryptography, but they: * feels just as a hobby project or an experiment, and are also dead (e.g. Tidecoin, Arielcoin, Abcmint) * are only using post-quantum algo in some insignificant part, but still rely on elliptic-curves, so they are still completely vulnerable (e.g. Algorand) * are in fact just a ERC20 token on Ethereum network (so completely vulnerable), promising real product for years but still not delivering anything (e.g. QANplatform, which had also their bridge hacked and tokens stolen from their users) * are claiming to be quantum secure, but internally they still use vulnerable cryptography (e.g. xx\_network, which feels closed/centralized as the source code has restricted license + you need to be approved by them to run a node) * are claiming to be quantum secure, but are closed-source, so who knows what's going on inside (e.g. Abelian) * ... Always be careful and verify the post-quantum claims, because there will be many projects just trying to scam you.

Ha! Easy meme for one of these QR chains...

Mentions:#QR

They should've named one QR Code, and it would make total sense.

Mentions:#QR

Problem is, once your first transaction hits the mempool, your address does become visible. With a theoretically powerful-enough quantum computer (QC), you could front-run someone by reading the public key from the mempool and putting another transaction before theirs gets included in a block. The danger there is that suppose that you want to migrate to a new quantum resistant address, you'll have to issue a transaction to send all your funds to the new address. While that transaction is in the mempool, a QC could read the public key, derive the private key, and issue another transaction with a higher fee (so that it gets included in a block before the original transaction) that sends all your funds to a malicious wallet. tl;dr even if you don't reuse Bitcoin addresses, there is still some risk. The only solution for is to have the entire migration to QR addresses be completed by all users before quantum computers, or use a chain that used quantum resistant addresses from genesis (eg. QRL).

Mentions:#QR#QRL

> These coins have the QR label, but none are simply trying to be quantum resistant Quantum Resistant Ledger (QRL, on your list) seems like exactly that.

Mentions:#QR#QRL

> Is he really matching any bitcoin that is sent to through the QR code? Take a guess :) It's a scam obviously. Don't send any money

Mentions:#QR

The transaction is logged on the blockchain. That's not going to help at all though. Once it's in someone's wallet it's theirs. I was really hoping there'd be a decimal when I zoomed in. Someone showed her a QR code she she sent them 15k? She should have someone managing her finances.

Mentions:#QR

https://www.techopedia.com/how-to/how-to-use-a-bitcoin-atm#:~:text=Scan%20the%20QR%20Code,than%20entering%20the%20address%20manually. Never show that qr code to anyone who asks for it

Mentions:#QR

Does she still have the QR code? That code is either the private key that’s capable of accessing the BTC that she owns, or it’s a wallet address that someone else owns. In the first scenario she might not have been scammed at all and rather just confused. However the second scenario does seem likely.

Mentions:#QR#BTC

The QR code could be the private key for that wallet. Not 100% sure if you were scammed. But I could find a legit reuters article about athena so.... maybe not all is lost

Mentions:#QR

I suppose you might have to weigh up what is more likely to get into financial difficulties. I am not convinced revolut will be around in 20 years as much as say coinbase or kraken. And also not sure if an asset like BTC would be insured. I love kraken. I'm in the UK. As already mentioned you should really be pulling your BTC off the exchange/bank and into cold storage in good sized chunks as you go. The fees you're paying on revolut would pay for cold storage in no time. I am a big fan of jade. Depending on your skill level you can use it in different ways. For example, it has a camera and blank QR code sheets you can colour in to store your seed phrase. Kraken and jade would be my recommendation based only on personal experience. I got a jade and a crypto steel cylinder capsule seed storage/backup thing for about £100. I sleep well now knowing flood or fire or financial crisis won't get my coin.

Mentions:#BTC#QR

The QR code was the BTC address. Nothing more.

Mentions:#QR#BTC

thank you.. she was also sent a QR code? is that at all traceable?

Mentions:#QR

You could try Coinbase Commerce or look into Square they're pretty solid for taking Bitcoin payments. There's also the straightforward wallet-to-wallet transfer using QR codes all you'd need is a Bitcoin wallet app on your phone. Easy peasy! Just make sure you're up on the tax side of things too, yeah?

Mentions:#QR

>If our wallets need to be connected to exchange bitcoin cant the other wallet us that opportunity to plant like a virus or something? The wallets are not connected to each other. >Lets say the seller puts a virus on my wallet that sends all the bitcoin that I have collected on my wallet back to the seller in 5 years. What is preventing that? The fact that the seller can't plant a virus to your phone by scanning a QR code. If you're this paranoid (that's a good thing around here), you can use a cold wallet that's created offline, create a watch wallet on your phone and use that for receiving payments. It's impossible to send the bitcoin out of the watch wallet so it will also prevent the money leaving your wallet in 5 years.

Mentions:#QR

If you had a QR code or wallet address on the back, you could have kissed any real value this coin had goodbye. Luckily for you, it didn’t have any value to begin with.

Mentions:#QR

Most people are sleeping on QR L1s, guess the FOMO kicks in when they hit top 10.

Mentions:#QR

Yes, Ubuntu is very easy to flash. Lots of videos out there. Simalir to bitcoin, Ubuntu is an open source project. It's free and the majority of bitcoin tools will run on that platform. Just make sure your hard drive is big enough to last as the timechain grows in size. 2TB should last you until the drive dies. Electrum server is great for privacy only if you are using tor. If you connect to someone else's electrum server on clear net, they can tell what information they are serving to you. If you have your own electrum server, you do get some added privacy since you run the server. If you run Bitcoin core and Sparrow wallet, your addresses end up being stored on the machine. if you use a HWW it is not your private key info, just your public info. So if someone get phycial access to your computer, they could see your addresses, but thats it. I think Bitcoin Core is easier for most people and the privacy tradeoff is fine imo since they need physical access to get your info. Washers are good, but they can be easily lost. I would look to get another backup metal plate if i was in your position, just for redundancy if possible. Something simple works. I would recommend using existing BIP39 words. Maybe just use another 12 word seed as your passphrase for plausible deniability as most people would assume thats a different seed and not a passphrase. Put some decoy funds on that wallet and write in steel as well. HWWs like coldcard can store the passphrase encrypted on the SD card so you don't have to type every time. Yeah, use the PIN. Save the QR, but dont store it with the HWW. Keep it very safe and hidden. Plus, using the passphrase will protect that private key QR code. You should be exporting or scanning something on the jade to input the wallet data into Sparrow. It is pretty easy and the software shoudl walk you through importing the info. No need to apologize. Happy to answer any more questions.

Wallet draining QR codes.

Mentions:#QR

All they need is a QR code at the counter but I ain’t paying for pizza with bitcoin. Didn’t we all learn that lesson? We have Coinbase commerce and solana pay set up through the web

Mentions:#QR

Fuck yeah, this is the type of info my brain needs! I am not to familiar with Ubuntu...I assume there are plenty of videos on youtube that can guide the process? From what I have read, the biggest difference between Bitcoin Core and an Electrum server is privacy of transactions mostly? I plan to just send BTC to my wallet and hodl for years. Would going without an Electrum server be just fine for my use case? I have my seed phrase stamped into washers. The "Safu ninja" method to be exact. Passphrase I was just going to remember. Maybe I will jut it down somewhere. Something simple should be fine I assume? Or is a passphrase meant to be some kind of short story or some shit. Not familiar with how it works. I plan to set up my Jade air gapped and use it fully air gapped forever. So you suggest I make a PIN so I don't need to scan the QR code each time? I will keep the QR code handy for future multi sig purposes though? So, this may be a stupid question, but I set up my Jade, create a seed phrase, go through all of that and then I create a new wallet in Sparrow and select the air gapped option, and I assume from there it is pretty easy? Sorry for all the questions. I am just so new to anything outside of purchasing BTC on an exchange and sending it my Ledger.

Mentions:#BTC#PIN#QR

I would never scan a QR code from one of these. I would go search for the website myself. These QR codes scare me as I don't know what else they could contain.

Mentions:#QR

Dont do everything at once. That will stress you out and make you uncomfortable. Move a few sats, or even operate in test net/signet if you have that option available. all of these topics are easier to learn by doing. Play around with txns, wipe and restore the wallet. Have your spouse do it too and answer any questions. Do all this before you move your stack over. You will feel very comfortable if you play and test first. Checklist, Dedicated machine: get an old PC, or buy a cheap one. Flash it with Ubuntu and only use it for bitcoin txns. nothing else. The easiest way to get pwned is to download malware. You cant acciendentally do that if you dont browse regularly on that machine. Run your own node: This is very easy with Sparrow. Just install bitcoin core on that dedicated machine and Sparrow will fill in the details. Running an electrum server would also work, but that is a bit more complicated. Store you seed on steel: In case of a flood or housefire, you want those words on steel Passphrase for single sig wallet: Use a passphrase for added security, but don't forget it. Write it down and store it away from your seed Air Gapped: use your wallet airgapped if you can. That will reduce attacks that require a physical connection. But dont store your seed in QR form and scan every time. That makes teh seed vulnerable to physical attacks or cameras. Only do that as part of a multi sig setup if you can help it.

Mentions:#PC#QR

I currently have all my BTC on a Ledger Nano X. Don't worry I plan to change that. I just got my Jade the other day, and I was going to use it with Sparrow wallet. But I am a little nervous about it. Should I just order another Hardware wallet and set up multisig from the start? Should I consider getting a Node first and an Electrum server? I want to store my future safely...but I also don't want to fuck it up. It seems daunting and I am afraid of fucking something up. I have been watching countless videos, but would it be ok to send all my BTC to Sparrow now without having my own node or Electrum server yet? Should I wait until I get those things? I do plan to do my Jade completely air gapped. Not sure if I should have a PIN on it or have it scan a QR code each time. I know I can do a passphrase, which I will do, but should I also split my BTC up between multiple pass phrase wallets? Fuck this shit is so nerve wracking sometimes. Especially for a paranoid little pussy like me. I wish Ledger didn't suck but all this stuff I read about them lately has me nervous storing all my BTC on there. I plan to just use the Ledger for Altcoins after I transfer my BTC off. My brain sucks I hate how I overthink everything.

Mentions:#BTC#PIN#QR

Google… Hardware wallet with a camera to scan QR codes for air gapped transactions. https://blockstream.com/jade/

Mentions:#QR

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Mentions:#QR

Usually on the web there is some button that says pay with bitcoin. That typically will redirect you somewhere like bitpay which will tell you to send x bitcoin to y address and QR code usually. You then send the bitcoin to that address and you are good to go

Mentions:#QR

That cable has some of the wires inside it removed, so that regardless of what you plug the Jade into, only power will be transmitted, not data. It can't be used to transmit data instead of scanning a QR code, it is only for charging.

Mentions:#QR

You would think but I have to help people that don't even know where control is on a keyboard.. and it's not just 1 person... Like many people have no clue what even Ctrl stands for.. QR code might as well be Korean to them

Mentions:#QR

Computers do QR codes too.

Mentions:#QR

They already can. OP just doesn't seem to know what he's talking about. That's what he's being called out on. You can customize the level of security and ease of use to any level you want. If people chose higher and more complicated level of security, where they have more responsibilities on getting things correctly, that's on them. If they want to use custodial approach, with very simplified apps that even grandma can use, or even crypto cards that they can use like credit cards at the check out line so they don't even have to use a QR code, they have that option too.

Mentions:#OP#QR

I know a function on exodus. You scan you private key's QR code and boom, your coins are on exodus. Do not reply to DM!

Mentions:#QR

Could use QR code

Mentions:#QR

> I don't quite understand the part of using the same wallet on two devices, in this case Bitcoin Core and some wallet app, couldn't that cause inconsistencies? You are (probably) not using the same wallet on two devices. What you seem to do is to have a separate mobile app on your phone in order to do the QR code scanning, and then to send the btc from the mobile wallet to the Bitcoin Core wallet. Another possibility is to find a mobile wallet app that connects to your Bitcoin Core node (which is better for your privacy), but it still will create a separate wallet on your mobile. Also it will require some additional steps to connect to your full node. And I actually don't know what mobile app is able to connect to a Bitcoin Core full node (perhaps Electrum, Samourai and BlueWallet). Anyway, what I probably would do is to setup a mobile phone (doesn't really matter which one from that list, if you only need it for one time payment), scan the QR code and just send it to your Bitcoin Core wallet. It won't be the same wallet, you will have a new, separate wallet on the mobile device. Hope that clears it up a bit.

Mentions:#QR

People in Canada can use cash or a debit card to buy up to $999.99 worth of bitcoin (per transaction) at any Canada Post office without KYC. They do not have to provide their name or show your ID or take a selfie or any of the other KYC procedures that exchanges require. There is a daily limit of $9,999.90 and they also have a limit of $999.99 per transaction without KYC. The fee for buying bitcoin this way is 2%. First you sign up to [Bull Bitcoin](https://www.bullbitcoin.com/). Next you click the "Cash or Debit at Canada Post" button. Then you have the cashier at the Canada Post office scan the QR code generated in the Bull Bitcoin app and you can pay the cashier with cash or a debit card. After you pay the cashier, the bitcoin will be sent to the bitcoin address that you provided. There is no waiting period like some other exchanges have. More info hhttps://www.nasdaq.com/articles/bull-bitcoin-launches-no-kyc-purchasing-through-canadian-post-office [And here is someone's review of using Bull Bitcoin to buy bitcoin at their local Canada Post office without KYC.](https://stacker.news/items/176370)

Mentions:#QR

QR Code grills, calling it now.

Mentions:#QR

Here's my setup exactly: A Blockstream Jade for BIP85. I use Jade in QR mode, so nothing is saved on the device. I load my parent seed and BIP85 index numbers to get child seeds. I use two Maix Amigos running Krux. One Krux is for loading my encrypted 24 word child seed. Krux asks if I want to use a passphrase. Yes! The other Krux is for loading an encrypted 12 word child seed to use as a passphrase. Then I scan that passphrase with the first Krux. It's a total of 5 QR code scans, which is very quick in use. Krux A: Scan seed. Scan to decrypt. Krux B: Scan passphrase. Scan to decrypt. Krux A: Scan passphrase on Krux B. I love this setup because it's incredibly secure, and because if anything goes wrong, everything can be recreated from scratch using BIP85. For example, let's say there's a devastating fire and everything in my home is gone. My parent seed is secured somewhere else, and that one seed is everything I need to recreate all of other seeds. > Of course, it's also difficult to keep track of and have sufficient backups of numerous different seeds and passphrases created in different ways, and to remember how they all work together, how they combine and are used within a particular multi wallet setup. So one point of failure might be preferable to many potential points of failure. I think BIP85 makes this easy. Parent Seed = master key. Wallet A: Child seed, child seed as passphrase. Wallet B: Child seed, child seed as passphrase. Wallet C: Child seed, child seed as passphrase. I name my wallets something that tells me (and only me) what the index numbers are.

Mentions:#BIP#QR

I did explain it to my dad who's 73 and he got the hang of it pretty quickly. Point camera at QR code, verify that the requested amount is correct, hit send, done. It's really just the "how do I turn this $20 bill into Bitcoin" that's hard. Where there's a will there's a way. The only people I've seen struggling with it are the technophobes, those who would rather not deal with tech because they believe it to be fundamentally evil or something. I completely agree with you about tokenomics, but again, that's a shitcoin thing. Cryptocurrency outside of Bitcoin is an absolute fragmented mess where even software engineers have a hard time keeping up. If you're not constantly reading up on the new ideas that are generated, you'll be left behind which makes that environment really hard to work with, which is why it's been mostly relegated to crypto investors, devs, and gamblers. As for the energy concern, it really goes into the thermodynamic argument. Bitcoin is valuable *because* it consumes energy. That's what makes it tangible. It has value because someone had to expend energy to produce it. If energy becomes scarcer, then its price will increase, and either the price of Bitcoin will increase, or miners will shut down operations, which will lower the mining difficulty, and everything balances back out. It's one of the most beautiful things about Bitcoin.

Mentions:#QR

You want to create a wallet with a proper backup at this amount of funds. This can be done by creating a wallet that has a 24 word seed. The "wallet" is compatible with any software so it doesn't matter which one you use. Athough it is ideal if you create a cold wallet (where the seed / private keys are only held offline) compared to a hot wallet. All the software wallets are all compatible with all the hardware wallets, so yes Coldcard et al easily integrate with Nunchuck etc using QR codes. I would recommend **not** using your phone. If you drop it in the toilet you'll loose your money. Since we're talking $10k+ you'll want to take steps to avoid single-point-of-failure situations. First step is just to take $5 of bitcoin and load it into a wallet in any wallet app, and then re-create the same wallet from a backup in another app. Play with the tools first then you'll understand what you need to do to keep your funds safe.

Mentions:#QR

They are addressing it ... Algo is also working on a QR update.

Mentions:#QR