Bitcoin is not really untraceable, every transaction is on the blockchain and there are many groups doing amazing amounts of blockchain analysis - they can track bitcoin from account to account and this is why coinbase etc know to close accounts of people sending bitcoin to dark markets.

If you want truly anonymous and untraceable, then monero is the one to look at.


(i know the first 3 numbers) #16

what do you suggest between monero and bread (ios)



bread is an excellent wallet for bitcoin

monero is a different coin which is based on ring signatures for privacy - it is relatively immature compared to bitcoin and the wallet technology is not as developed as that available for bitcoin.

There is a mobile wallet being introduced - I haven’t kept track of it though.


(Ravinder Sembi) #18

Would be great if we can topup card with bitcoin or ether. Ideally the conversation to fiat will be on purchase transaction.
So bitcoin / ether will be held in there own wallets on the card, as the price of crypto can fluctuate compared to fiat, only converted to fiat at point of purchased transaction.


(Dmitry Silin) #19

I have got a prepaid Monzo debit card. Can it be used to buy bitcoins? I can buy bitcoins if 3D security is supported. So, do you support 3D security?


(Alex Sherwood) #20

Monzo don’t at the moment. They will when the current accounts launch -

but since some banks block Coinbase, even if they do support 3DS, I’ve moved your post to a topic that’s dedicated to cryptocurrencies…



I believe Monzo does have 3D-secure. When buying at merchants that support 3D-secure I always get redirected to a page owned by Arcot Systems, which after fingerprinting my browser redirects me back to the merchant.


(Alex Sherwood) #22

The post that I’ve just linked to confirms that Monzo don’t support 3D Secure & here’s another one -

1 Like


But how do you explain that I get redirected to Arcot every time on a 3D-secure-compatible merchant? A card without 3D-secure would not have any redirects.


(Alex Sherwood) #24

I don’t know the answer to that & obviously you don’t either.

So you can ask Monzo the question & I expect they’ll explain that it’s not what it looks like.

But either way, in the meantime, I don’t think it really makes sense to directly contradict something that the Monzo team have specifically confirmed.


(Jim) #26

Even aside from the shady reputation of bitcoin, the amount of electricity used in mining it is environmentally brutal.

Any enterprise that cares at all about its environmental reputation would do well to distance itself from bitcoin as far as possible, in my opinion.



Depends if the datacentres that have miners are running on solar and/or other green energy sources.


(Jim) #28

If only things were that simple. Typically bitcoin miners must run full pelt 24x7. Turning them off at night when the sun isn’t shining just isn’t an option.



I get that, but usually solar energy is used and also stored in batteries or fed back to the grid. So swings and roundabouts I guess.


(Patrick) #30

lol is running Bitcoin the only use of power-hungry data servers? It’s not like anything else that happens in the internet doesn’t use any of these servers. I wonder where the notification comes from when I use my hot-coral card and where all that transaction information is held :thinking:

I always found it hilarious to read “Think about the environment before printing this email!”. Unnecessary printing does surely accelerate the deforestation of our wonderful world but even if we are not physically hacking at trees, emails do have a carbon footprint.

From your link:

The largest share of the miners are located in China, close to the border with Tibet where cheap hydropower is relatively abundant.


(Tommy Long) #31

The amount of electricity used for bitcoin mining is well in excess of that used for regular Internet hosting. I run several web servers and a couple of ethereum mining rigs and the ethereum rigs use ten times the electricity of the web servers (about equivalent to permanently boiling a kettle each).

The point about China using some renewables is nonsense. If it wasn’t for Bitcoin mining that electricity could just be used for other stuff, instead of coal.


(Patrick) #32

I wasn’t talking about “regular internet hosting” I was talking larger data center consumption. Your comparison is anecdotal information based on a very small sample which frankly misses my point.

With a carbon footprint rivalling the airline industry’s and only expected to get worse, my question reasonably stands. What makes my aunt’s cat picture browsing and liking spree on Facebook more worthy of this energy consumption than the sending of a few bitcoins by my neighbour to a friend?

[quote=“tommy5dollar, post:31, topic:2295”]
The point about China using some renewables is nonsense. If it wasn’t for Bitcoin mining that electricity could just be used for other stuff, instead of coal.
[/quote] I suppose it’s ok to burn coal so I can Instagram a photo of the skinny latte I just ordered through Starbucks’ app whilst waiting on an Uber and ignoring the hundreds of WhatsApps being sent by my jealous girlfriend. It’s unfair to criticise bitcoin if we are not holding all other data use to same scrutiny.


(Tommy Long) #33

Large data centre consumption is way more efficient than “regular internet hosting”. Making a bitcoin transaction is, in terms of electricity, the equivalent of a 100-hour plus cat picture liking spree on Facebook!

I didn’t get into the morality, if I cared about it then I wouldn’t be running an ethereum mining rig… I’m just pointing out the facts. It’s precisely because I am holding all other data use to the same scrutiny that I’m pointing this out; cryptocurrency mining uses a ridiculous amount of electricity. It does this deliberately because it’s the whole concept of the proof-of-work algorithm and it’s why ethereum and others are shifting away from proof-of-work to proof-of-stake in the near-term future.


(Alex Sherwood) #34

More confirmation from Twitter today that 3D Secure is the reason for the issue -

1 Like

(Thomas Yau) #35

I’ve not been a long time user of Monzo but so far, its proven to be a great money saver for me just simply by keeping track of my spending but here’s an idea that I would like to see implemented and that’s to allow Digital currency to be deposited into the Monzo card and use are normal currency, now before you close this post down, just hear me out and have a open mind.

Each day more and more people are investing into Bitcoin and other forms of digital assets and its actually cuasing concern amongst the other financial services, so much so that Goldan Sachs, JP Morgen, Visa and tech companies like Microsoft are looking into adopting the blockchain technology.

So wheres the idea for Monzo? Well as a investor into digital currencies, you get to hear various start ups on the grapevine which raise money in the form of ICO (initial coin offerings). Some of these companies are Card Services companies and direct compeition to Monzo. So who are they?

The recent Monaco card ( raised $3 million in 3 days from their ICO and aims to bridge the gap between ‘Normal Currency’ and digital currency

TenX provides the same services in bringing the normal currencies to digital currencies together and vice versa (

Monzo, has done a great job in providing a service from the direction of normal banking services, and i think it would be great if Monzo could incorporated Bitcoin/ Ethereum as a depositiable currency.

Anyway thats my idea, the ‘rival’ companies are there already. You can find the whitepaper on their respective homepage.

I really like Monzo and use it everyday and would want it to succeed, Let me know what you guys think of the idea and its feasbility.