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May 29, 2024, 08:26:41 AM *
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2721  Bitcoin / Bitcoin Discussion / Re: Chipotle now accepts crypto payments (only in US stores for now) on: June 04, 2022, 01:48:37 PM
Minor(ish) issue. The list of places that accept payment though the app are small which is not a big deal. BUT all of them have a $5 minimum. So I had to add more funds to create a payment to get the rest of the value off.

Since as stated and pointed out when depositing, you can not withdraw coins you either have to sit with funds locked up in the app or put in less then you need to spend and pay the rest a different way.

Not related to chipolte per say but the app in general.
Just something to keep in mind.

-Dave
2722  Bitcoin / Bitcoin Technical Support / Re: Can't sign a message with bitcoin core on: June 04, 2022, 12:14:38 PM
If they can't use electrum to verify the address the other way to do it is to use another app and then import the private key into your core wallet.
It is a lot more convoluted but it can be done and not the best but it can be done. What I wound up doing when I had to do it.

1) Old wiped android phone with no wi-fi or cell access install coinomi though USB
2) generate new wallet and recovery phrase, get address and write down phrase
3) iancoleman on an offline PC to get private key and import into core
4) Sign with coinomi save as text document on phone move file though USB (or copy by hand, like I'm not going to make a mistake by hand)

Not as secure, a lot more cumbersome but I got it done.

-Dave
2723  Bitcoin / Press / Re: [2022-06-03] New York just passed a bill cracking down on bitcoin mining on: June 04, 2022, 11:59:59 AM
If it passes, it would make New York the first state in the country to ban blockchain technology infrastructure"

That is not "blockchain technology infrastructurre". It merely bans mining operations that generate coins in the blockchain, and only those running with carbon as a power source (and no others).

I know that in the depressed ads market, news sites need every click they can get, but they can get them without lying to people, you know. :/

As usual, miners will find a way around this.


I don't think that it's total clickbait, it's more along the lines of they don't understand it.

NY is trying to do 2 things at the same time that LOOK to the unknowing to be going in different directions. But can actually be seen as going in the same.

In what is known as upstate NY there is a lot of green energy and such. Almost total usage.
HOWEVER, it is not that populated and does not have that much industry as compared to the rest of the state.

Or to put in another way. NY has about 20 million people living in about 55,000 square miles (145,000 km2) [approx numbers]

Long Island is 1400 of those square miles with 8 million of those people living there
Manhattan is 24 square miles with 1.7 million people
The Bronx and Staten Island are about another 2 million people living in 175 square miles.
So more then 1/2 the population lives in less the 10% of the space.
Very little green power is generated here just due to the amounts needed and lack of space. The rest of NY can get away with hydro and other greener sources.
In order to meet green goals they are trying to make sure that what is built does come in and stay green.

So they are pushing the tech end so to speak: https://fortune.com/2022/02/01/new-york-city-silicon-valley-cryptocurrency-startup-funding/
While trying to also keep mining clean.

Will it work? No idea, get back to me in a couple of years and I'll let you know :-)

-Dave
2724  Bitcoin / Bitcoin Discussion / Re: Goldman Sachs Group lends money to Coinbase backed by bitcoins on: June 03, 2022, 01:24:22 PM
It will have 0 impact on De-Fi

As for what it will do in general, hard to say. It's looks like any other asset backed loan. So you get better interest rates since they have a hard asset to sell if you default.
Probably good for both companies. GS gets to make a low-ish risk loan and CB gets financing with better rates then the open market / bond sale type thing.

-Dave

2725  Bitcoin / Press / Re: [2022-06-03] New York just passed a bill cracking down on bitcoin mining on: June 03, 2022, 01:00:01 PM
It does not kick miners out, it just does not allow them to expand unless they are running on 100% renewables.
Also, and this is important to think about, in a lot of places in NY you are almost 100% green energy.
Keep in mind too, unless they are generating their own power, NY (and a lot of other states as far as I know) allow you to 'buy' your power from anybody.
i.e. where I am PSEGLI supplies the support and lines and everything else. I can BUY the actual electricity from a host of different companies. All of which are about the same price.
So they switch their purchases from this to that, possibly pay a fraction of a penny more and go on with what they are doing.

https://www.coned.com/en/save-money/shop-for-energy-service-companies/find-your-esco


-Dave
2726  Bitcoin / Bitcoin Discussion / Re: Bought anything with btc? on: June 03, 2022, 11:39:54 AM
I think a better question is, in general how much of your BTC do you save for long term vs short term vs spend.
There is always the cost of money, be it BTC, fiat, gold coins, whatever. You should be figuring out what is the best to spend vs save in any given situation.
Obviously, I am not going to do that on each and every transaction. But in the large view everyone should be doing that if possible.


Example, on bitcoin pizza day bitrefill was giving back 50% of giftcard purchases to certain pizza places. NOT spending BTC and getting some gift cards to places I eat anyway would be a bad financial idea. Yesterday I picked up dinner at Chipolte due to this thread: https://bitcointalk.org/index.php?topic=5401107 it was only $20 and I wanted to test the app anyway BUT at 10% off I would have had to weigh that vs potential short and medium term BTC gains. And so on....

-Dave
2727  Bitcoin / Bitcoin Discussion / Re: Chipotle now accepts crypto payments (only in US stores for now) on: June 03, 2022, 12:32:35 AM
Well, lets start with the important part 10% off:



1st thing to know it's 1 way only there is no way to withdraw crypto from the app.
It pops up a message before it gives you a deposit address that you can't withdraw.

Sent some crypto (LTC) to it and it showed the value of it.
Went ordered some burrito bowls and it scans at the register as a gift card.

Money comes off the Flexa app and dinner is eaten.
No muss no fuss.

Personally if it was not for the 10% I would rather use bitrefill and get a gift card but that's just me.
Now I have enter the receipt info into the chipolte app instead of just getting my points that way.

Also have to figure out what else is around here that I can finish spending the funds on.

-Dave
2728  Bitcoin / Project Development / Re: Project Idea Involving 300 KVA Transformer on: June 02, 2022, 07:56:00 PM
Who pays for the power?
The cooling?
Insurance?
Building maintenance?
Taxes?
Other fixed expenses?

I'm sure I could go on but you get the idea.
It looks good at a glance, but depending on all the costs involved you could wind up way behind.

-Dave
2729  Bitcoin / Bitcoin Discussion / Re: Chipotle now accepts crypto payments (only in US stores for now) on: June 02, 2022, 03:26:23 PM
One may say that it's not a real deal as they will do it via 3rd party service (in this case Flexa) but its a good mews nevertheless and a step in right direction.

We should stop dreaming for a few years of real p2p on-chain transactions between merchants and customers, I really think that this will start growing more and more like the current visa/mastercard payment system but still, there is one small tiny thing I don't like in this, unlike paying through Bitpay for example, the 3rd party requirement is on the customer side..

Quote
To pay with Flexa, customers will need to download Gemini or SPEDN app, both of which store digital assets. Customers can then use the app and tap it in-store to make a payment.

So I need to have a wallet for this, if KFC will have a partnership with XYZ I would need another wallet?  Grin, hope not!

Anyhow, excluding the obvious inconvenience if you're not a fan of this wallet, this is a big one, with over 2k stores, 5 billion in revenue, and millions of customers! If they add some kind of promo days for it we could finally have some real usage that will drive others to copy the move.
Of course, it could have been better but during these bearish days, this is as good as one could hope for.

I imagine that since payment has to be made through Gemini or SPEDN app all payments will be KYC controlled. I don't know, it always sounds like good news that you can pay in BTC in more places but if so it doesn't seem so good to me.

It needs one of these apps since you don't have to wait for confirms or anything like that. Kind of like Cashapp / block with crypto payments. It's keeping it all in their bubble.
Not perfect, but it's a start. Yes you have lightning and other options but this has to be painless and simple for the users and give the workers a simple interface. Let's face it, it's fast food you don't want to have people standing waiting for my lightning node to try to find the best route to the chipolte node. 

As of now, Flexa has not asked me for any KYC info. Name, email and age / DoB which would be needed for any financial app.

-Dave
2730  Bitcoin / Bitcoin Discussion / Re: 4.45 million bitcoin untouched for 5yrs,do BTC community can retrieve in future? on: June 02, 2022, 11:03:01 AM
Outside of the obvious no answer they can't be taken. I find it amazing the number of people who don't understand the concept of long term things.
I actually have some 30 year bonds that I bought while I was in college. Just sitting there earning interest for the last 2 1/2 decades. What if people decided to do the same with their BTC do you just want to take that?

Years ago (and they may still exist) there were 50 year bonds. Do you just want to take those from people?

How about show up at their house and take the cash they have in a shoebox in the back of the closet that they have been collecting since they were young?

-Dave
2731  Bitcoin / Development & Technical Discussion / Re: Thoughts on burner addresses on: June 01, 2022, 02:28:54 PM
....Because an OP_RETURN script cannot be unlocked, and so these coins cannot be spent. Coins in burn addresses can be unlocked by one of the correct private keys, it is just that no one knows what those private keys are.

I know I have said this before but that is not 100% true / proven.
With some of these addresses:
We *assume* that due to the math that nobody has the address.
We can prove that to generate the address through brute force cannot be done before the sun goes nova and destroys the Earth.
We CANNOT prove that nobody has it.

You can't prove a negative. And there is always the 2^160 to 1 chance (close enough to zero to be zero but still not zero)that someone has one of them.

Sorry it's just one of those things that I think should be out there.

-Dave


2732  Bitcoin / Hardware wallets / Re: ColdCard hardware wallet on: May 31, 2022, 12:43:18 AM
Beware!
I don't remember that I saw anyone posting this before, but if you already own ColdCard Mk3 hardware wallet you may want to check this out.
This was first posted on twitter by LazyNinja and it reveal big security flaw with ColdCard Mk3 PIN Replacement Attack.
He was able to bypass MK3 security feature and after second attack he was able to perform seed extraction from ColdCard device (passphrase was not extracted).
If you are using Bootloader v2.0.0 or older than you are vulnerable to this attack, due to flaw in Mk3 architecture discovered by LazyNinja, that enabled PIN replacement.
This was later fixed by ColdCard developers but you can't fix it yourself if you already own this device.
Maybe this was the main reason for ColdCard decision to release Mk4 device with two secure elements, but I someone will try to find flaws in that system as well.


More details with videos:
https://threadreaderapp.com/thread/1377362927729082368.html

Solution for anyone who owns Mk3 device is to add mandatory passphrase and move funds to new address or use some other better hardware wallet.
I have to say that I don't trust this new invention from ColdCard and they are only hardware wallet with secure element that got hacked, that is bad advertisment.


Uhhhh -->You<-- posted it before.....in this thread...about a year ago.
Things we learned today....dkbit98 is an true American and was drinking way to much at the Memorial Day BBQ and erased the last year of his memories.

Important update for Coldcard hardware wallet and not so secure Secure Elements!

@LazyNinja managed to find a flaw in architecture and bypass ColdCard MK3 security feature by opening hardware wallet, removing secure element and replacing device PIN with his own PIN code, and then he returned altered secure element and gained full access to device.
Reminder that ColdCard is using ATECC608B secure element and this attack was possible with bootloader v2.0.0, and to fix this you need to have new updated bootloader v2.0.1

Similar pin replace attack could happen for ledger and other hardware wallet devices, but he said that hardware wallets are still 100x safer then using regular PC, however they are not invincible.

Check out his thread and video procedure:
https://threadreaderapp.com/thread/1377362927729082368.html


2733  Bitcoin / Mining / Re: Latest cgminer causing overheating on: May 30, 2022, 05:41:15 PM
... because the room temperature is 80 F ...

How much air movement do you have going over the heatsinks?
100F with a lot of air moving is going to keep it cooler then 80F and dead still air.

=================
=Cooling=
=================
If you run a stick miner, use a cooling fan. 
 
Increased cooling can reduce the chip's overall power usage.

Non cooled sticks are subject to thermal runaway where heat will trigger increased amperage draw increasing heat in a cycle until the unit fails.

So make sure you have enough air moving over it.
Also, make sure that the heatsink is tight. Heating and cooling over time could have caused the screws to back off a bit.

-Dave
2734  Other / Meta / Re: BADecker can do this ... on: May 29, 2022, 11:27:01 PM
...
Btw as out there as badecker can be every once in a while he drops a golden nugget of info.
...

Which is 100% not relevant due to his plagiarism.
For whatever reason the mods due not want to stop him.

Probably for the same reason that the altcoin / tokens sections are allowed to fester the way they do.
More posts = better to sell ad space and keep the forum up in google and other rankings.

Just my cynical view.

-Dave
2735  Bitcoin / Bitcoin Technical Support / Re: How to see blockchain data via bitcoin core in GUI\windows OS? on: May 27, 2022, 06:52:12 PM
IIRC Sparrow is talking back to their own servers so you loose the privacy aspect.
Any reason you want to do this the hard way by putting the node on 1 machine in Windows and pulling the data from that instead of just using either one of the packaged 'nodes in a box' on the 400 and having it all run from there. You are just adding a lot more complexity for almost no benefit.

-Dave
2736  Bitcoin / Development & Technical Discussion / Re: BIP119/OP_CTV: is this a unilateral fork, and does anyone care? on: May 26, 2022, 03:42:38 PM
There should probably be a discussion of is this the best way of doing it, if so fine lets keep it this way and make it a procedure. And if you don't follow it feel free to leave.
OR
This is the way we do it now, lets have a long discussion with a lot of input from everyone and come up with a process to do this.

....but it seems that acceptance of this way of working sets a precedent for someone else to propose similar such fork-activations, only to claim "this is how forks are done now"...

And that is the core of the issue. If there is a list of steps, and things that need to be submitted and how to do it and where to do it and what is needed. And once all of that is done, these are the next steps.
It is a lot more difficult to have things like this happen.
Because, if every time more BIPs show up, and the acceptance process is although well documented, does vary a little bit over time and how people see it.

Which is the issue. What is a little bit? OK fine *that* is a little bit, here is a little bit more. And then 10 years from now you can't even see where the 1st little bit was because the acceptance process has changed that much. If it is written down and followed to the letter although it does make things more difficult it will prevent things like this. And if *anyone* wants to change it, everyone (or a majority or 75% or whatever) has to agree.

-Dave
2737  Bitcoin / Bitcoin Technical Support / Re: Cheap Node Self Hosting: Just because you CAN does not mean you SHOULD on: May 26, 2022, 01:55:27 PM
The point, in general does remain the same.
You can cram a lot of stuff on under-powered slower devices with I/O and other things that can't keep up.
However, in the end you are not doing yourself any favors.

And as the blockchain gets bigger and the other apps that use it need more and more storage and everything else, you will hit sooner or later hit a wall.
Sometimes the wall is soft and padded and all you have to do is dd your older slower smaller drive to another one. Other times the entire thing gets corrupted and you have to start from scratch.

-Dave
2738  Bitcoin / Bitcoin Discussion / Re: FTX proposal to CFTC may create opening for Bitcoin Spot ETF on: May 25, 2022, 04:30:58 PM
Anybody can in theory invest in anything.
HOWEVER, many funds and other investors will not want to invest money in something that is not regulated.
The risks, which MAY or MAY NOT be higher give the appearance of higher risk so they are avoided. Either by policy or by intent.

Obviously, there are exceptions to this but the overall point is the same.

-Dave
2739  Bitcoin / Development & Technical Discussion / Re: [List] VanityGen Wallet Generation - threads, how to & links - [MODERATED] on: May 25, 2022, 11:47:38 AM
Just adding the comment that yes I do use vanity addresses, but there are privacy concerns to keep in the back of your head due to address reuse.
They're great for public usage, say a donation address or a payment address from an online service.

Quote
Or even just similar addresses. If I generate 1000 addresses that start 1DaveF and just use those it's going to make someones life who would want to track me easier.
That works both ways: you can use a popular vanity address to make it look like it's owned by someone else.

I won't post them, but I found 55 addresses with "1DaveF". Some not even at the beginning (and this list isn't complete):
Code:
17pPCGgp1davefJpTqv1TgSLFnXL3b9Bjb
3QDhTb5TMxBZV2ijaXxtV77RRMgh1daVef

If always use 1DaveF here for stuff I sell and sig campaigns and whatever, and with a bit of looking through the blockchain see that I send BTC to binance from those addresses there is no real privacy lost since I posted the address for all to see.
NOW, you and I do a private deal. If at that time I give you a 1DaveF address to pay me and it goes to binance it's pretty much a given that it was me who got the funds at the 1DaveF address. That was the point I was making. If you post an address in public it's one thing. Using similar vanity addresses does (IMO) chip away at privacy.

Since this is not the main point of this thread if we want to keep talking about it, we should probably start another one discussing this.

-Dave

2740  Bitcoin / Development & Technical Discussion / Re: [List] VanityGen Wallet Generation - threads, how to & links - [MODERATED] on: May 25, 2022, 10:22:06 AM
Just adding the comment that yes I do use vanity addresses, but there are privacy concerns to keep in the back of your head due to address reuse.
Or even just similar addresses. If I generate 1000 addresses that start 1DaveF and just use those it's going to make someones life who would want to track me easier.

-Dave
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