Bitcoin core for android? | Bitcointalksearch.org

shorena

copper member

Activity: 1498

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No I dont escrow anymore.

Quote from: mbdash on April 18, 2016, 08:45:52 AM

Also,

I ordered the whole deal for 70$ on Amazon

Phone=30$
MemCard=20$
+cable, carry case and a usb to Ethernet adapter
Total = 70$

Quite reasonable for an experiment.

Will write an update about the results.

cheers

Looking forward to that.

mbdash

newbie

Activity: 4

Merit: 0

Also,

I ordered the whole deal for 70$ on Amazon

Phone=30$
MemCard=20$
+cable, carry case and a usb to Ethernet adapter
Total = 70$

Quite reasonable for an experiment.

Will write an update about the results.

cheers

mbdash

newbie

Activity: 4

Merit: 0

My apologies for been unclear,

I meant to write the exact opposite,

my post was addressed to you because valance, you and Digit-0 who were providing good info and contributing.
I just wanted to say to the others not contributing to abstain from reading and answering my post with more "it can't be done'

sorry for the confusion, I will correct the post to reflect my original intend and clarify.

-Matt

shorena

copper member

Activity: 1498

Merit: 1528

No I dont escrow anymore.

Quote from: mbdash on April 17, 2016, 04:08:16 PM

-snip-
The only thing certain about ppl saying it can't be done is the certainty that they won't be the one making it happen...[/i]
-snip-

Since you addresses me directly: No I never said it cant be done. I indeed said I wouldnt do it. I said CPU and RAM should be fine (so Im not sure why you quote all the numbers regarding this). The main problems I see are #1 the data plan (unless you run it strictly on WiFi) and #2 the battery life. If you have a phone that needs constant WiFi and a cable every 2 hours (or an additional 1kg of external battery), you might use a laptop instead. If you are in it for the technical interest, go ahead.

There is a difference between saying I wouldnt do it (and here is why) and it cant be done.

7788bitcoin

legendary

Activity: 2282

Merit: 1023

I haven't tried using an android core but I guess it is a interesting idea. By the way, how do you port forward 8333 using mobile data? Without the port forwarding, I think the node will be quite useless...

mbdash

newbie

Activity: 4

Merit: 0

Quote from: gmaxwell on April 17, 2016, 06:37:44 PM

There is an android version, ABCore: https://github.com/greenaddress/abcore

The low processor performance of most android devices combined with the phenomenal growth of the blockchain really reduce it's utility, however.

Great! Thank you for the info.

gmaxwell

staff

Activity: 4284

Merit: 8808

There is an android version, ABCore: https://github.com/greenaddress/abcore

The low processor performance of most android devices combined with the phenomenal growth of the blockchain really reduce it's utility, however.

mbdash

newbie

Activity: 4

Merit: 0

1st my little rant...
I am sorry for my tone but it is very frustrating searching on a subject and having to put up with 75% misinformation, negativity and lack of out of the box thinking.
It is so sad to see once again so many ppl talking down an idea without researching the subject.
If you lack imagination, creativity and got nothing constructive to add, why feeling the urge to share your opinion?

The only thing certain about ppl saying it can't be done is the certainty that they won't be the one making it happen...

Ok now back to the subject.
Since the main contributors to this idea are Valence, shorena & Digit-0,
this post is mostly addressed to them and their out of the box thinking.
what I mean by that is naysayers please abstain from spamming with "It can't be done"

bitcoin-core requirements - Bare Minimum (With Custom Settings)
source: https://bitcoin.org/en/bitcoin-core/features/requirements

Memory (RAM) 256 MB
System
- Desktop
- Laptop
- Most ARM chipsets
  - https://en.bitcoin.it/wiki/Bitcoin_Core_compatible_devices#ARM-based_Chipsets
    (bitcoin core *could* run on a RaspberryPi B v1 @700MHZ 512mb RAM)

Here is the desired features:

Highly secure Bitcoin Wallet
Must fit in a pocket or close to
wifi connectivity
Large enough(expandable) memory to fit the whole block chain
Full QWERTY keyboard with number row for convenience
Capacity for external battery
Control over network cards to reduce hacking risk(on / off)
camera with focus to scan payment QR codes

Nice to have:

Cellular connectivity for punctual transactions
USB wifi dongle support to dispose of network cards from time to time
- Why!? (would trolls ask...)
- Because F-U Google Street Mac sniffing triangulation, I am not a damn criminal and I have the right to my own privacy
Possible Debian support to allow total control over the network cards and OS, would require manually configuring and installing drivers for all components
source: https://wiki.debian.org/Mobile
USB to Ethernet support to prevent Wifi card sniffing and unsecured Wifi connection while syncing to blockchain at home

Here is the setup I had in mind
BTC -> Will most likely require a custom compile of Bitcon-core from source for Android.

Samsung Stratosphere (Samsung SCH-I405)
http://www.phonearena.com/phones/Samsung-Stratosphere_id5868
1000 MHz, ARM Cortex-A8
512mb RAM
Full QWERTY Keyboard
wifi & sim connectivity

Kirin(TM) OTG Host Cable Cord Adapter
http://www.amazon.com/Adapter-Powered-Charging-Charger-Connector/dp/B00LTHBCNM
usb micro-b to 3 usb-A +1 usb-microB for charging

GDSY 128GB Waterproof USB 2.0 Metal Flash Memory Stick
www.amazon.com/GDSY-128GB-Waterproof-Memory-Storage/dp/B01BW6T0XS
128GB

Common Cellphone External USB battery

Other:
BTC -> Will most likely require Debian.

HDE High Speed USB 2.0 to RJ45 10/100 Mbps LAN Ethernet Network Adapter
http://www.amazon.com/HDE-Speed-Ethernet-Network-Adapter/dp/B009GHJOF0

Random Cheap-O wifi dongles

[/list][/list]

bob123

legendary

Activity: 1624

Merit: 2481

This doesnt seem economic to me at all.
Core on Tower PC's are enough IMO

shorena

copper member

Activity: 1498

Merit: 1528

No I dont escrow anymore.

Quote from: Decoded on January 29, 2016, 05:27:19 PM

You'll need a strong battery to cope with the constant downloading, which uses up alot of processing power, having to write. Why not use Mycelium? It's the same thing, except a lighter wallet.

Mycelium is a nice wallet, but not a full node.

Decoded

legendary

Activity: 1232

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give me your cryptos

You'll need a strong battery to cope with the constant downloading, which uses up alot of processing power, having to write. Why not use Mycelium? It's the same thing, except a lighter wallet.

opet

newbie

Activity: 57

Merit: 0

I think this question becomes much more interesting given this new development:

Android on Desktop PC's: Remix OS
http://www.androidpolice.com/2016/01/15/hands-on-with-jide-remix-2-0-for-pcs-a-promising-start-for-android-on-the-desktop/

shorena

copper member

Activity: 1498

Merit: 1528

No I dont escrow anymore.

Quote from: bob123 on December 15, 2015, 06:37:30 AM

Smartphones dont have the computing power yet to be used as a full node to support the network.
Even older PC's / Notebooks struggle using ´BTC Core with 4gb Ram

Single core with 1 GB RAM works fine, most modern phones have more CPU power and ram.

bob123

legendary

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Merit: 2481

Smartphones dont have the computing power yet to be used as a full node to support the network.
Even older PC's / Notebooks struggle using ´BTC Core with 4gb Ram

Pattart

hero member

Activity: 1190

Merit: 500

Quote from: LFC_Bitcoin on November 09, 2015, 10:48:11 AM

Yeah this is not currently possible, look how long it takes to download the full blockchain on a PC or laptop.

No current mobile phone has the capacity for such a massive amount of information.

It could be copied over from a computer. Copying over USB or directly to a MicroSD card to put into the phone is much much faster than syncing over the network.

Digit-0

full member

Activity: 199

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in the end, you only find the beginning

Quote from: confirmation120 on October 21, 2015, 01:22:28 AM

They would need to make it smaller for phones its huge.

Maybe now, but you know that things are going faster, don't descarte that in next years to have 100 gb on a cell phone is something near ridiculous, i mean that maybe we can expect a huge amount of gb in our cell phones in a near future, who know?

So is possible right now, ofc no, but maybe in a near future...

LFC_Bitcoin

legendary

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Yeah this is not currently possible, look how long it takes to download the full blockchain on a PC or laptop.

No current mobile phone has the capacity for such a massive amount of information.

shorena

copper member

Activity: 1498

Merit: 1528

No I dont escrow anymore.

Quote from: ?? on ??

Quote from: shorena on October 20, 2015, 01:51:18 PM

Sorry, but whats you data plan?

I dont think this will be a common thing even if its common for smartphones to hold that much memory. For one they seem to litter up the available space pretty quickly and core does not only need big disk size, but also plenty of traffic (~100-250 GiB/month).

Phones also tend to have relativly small RAM. E.g. the comming high end Samsung S7 will probably have 4GB. Under load smartphones draw battery, I guess that core would keep the phone from going into deeper sleep modes in order to verify and relay transactions.

I don't care if it's common, it would still be cool if it were available. The app wouldn't wouldn't have to run at all times in the background, you could just open it and update the blockchain when sending or receiving. Wouldn't require 100GB/month if used that way, also woudn't be constant drain on battery. 4GB RAM should be enough to run core, I've run it on a laptop with that much RAM.

In this case you might be able to hire someone to compile the code for android/iOS for you. Either that or do it yourself.

confirmation120

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They would need to make it smaller for phones its huge.

Pattart

hero member

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I don't think that is possible since I don't that ART would allow such high usage of RAM. The Virtual Machine to run the app in has limited RAM which probably wouldn't be enough to for the program to run properly. I don't think the memory of the VM can be changed without rooting the phone.

If the phone was somehow configured to not be the sync node for other nodes, then yes the data usage might be able to not go over 100 GB/month. Still, according to Shorena's node, there are over 100 Gb of transactions per month, so a Bitcoin Core app would still use that much data.

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