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2561  Other / Beginners & Help / Re: [Tips and Information] Privacy and How to Stay Anonymous Online on: November 19, 2019, 06:15:45 PM
But when we talk about our privacy in general its already stolen by android and IOS devices
For most users, yes, but you can quite happily root a smartphone and install an open source OS on it such as GrapheneOS or Ubuntu Touch, along with a non-google app store such as F-Droid. It's perfectly possible to de-google all your devices (and for free), you just need to have the motivation to do so.
Rooting or jailbreaking can make our smartphone non trackable but it leads our device is easily hackable so its only for the pro users not for the normal users.

Rooting or jailbreaking your device won't make your smartphone not tracktable. It only open possibility to disable feature which could invade your privacy or limit what an application could do.

Even so, you can't prevent tracking from cell tower triangulation.

Someone correct me if I'm wrong, but I can't see any benefit to using both a VPN and an obfsproxy bridge simultaneously to connect to Tor, unless for some reason you wanted to hide the fact you were using Tor from your VPN provider?

Me either. Since the ISP could detect you based on known entry node IP, one could use unlisted/private Tor Bridge with pluggable transports
2562  Local / Bahasa Indonesia (Indonesian) / Re: [EDUKASI] Importing Private Key vs Sweeping Private Key | Mana yang lebih baik? on: November 17, 2019, 05:54:42 PM
IMO mungkin lebih tepat kalau sweep digunakan apabila agan ingin membuat riwayat transaksi agan lebih privat dengan memindahkan semua balance ke alamat baru (via mixer misalnya), atau ketika device agan hilang tanpa peduli apakah ada yang mengakses atau tidak, atau karena agan ingin menyederhanakan wallet jadi satu (ketika address tertentu tidak termasuk pada seed agan yang baru).

Sweeping membuat 1 transaksi dari berbagai address & input, sehingga Sweeping mungkin bisa menghilangkan privasi.

IMO lebih baik melakukan sweeping manual, seperti :
1. 1 transaksi untuk 1 alamat Bitcoin
2. 1 transaksi untuk beberapa alamat Bitcoin dengan group yang sama (seperti signature campaign)
2563  Other / Beginners & Help / Re: Brave Browser - Why it doesn't care about your privacy on: November 16, 2019, 07:05:50 PM
Additionally, Firefox have far better privacy configuration by default since Firefox 70, so i don't see any more reason to recommend Brave Browser for technology illiterate or lazy users.
Nowadays i only use Brave Browser if i need to visit website which doesn't work properly on Firefox. 

I hope someone else, maybe firefox, could just implement their business model paying users with BTC without kyc.

If firefox (or any browser developer/publisher) actually care about praivacy, they wouldn't make business model which reward their user.
There's no way to avoid some kind of data collection if they're gonna to reward their user.
2564  Other / Beginners & Help / Re: [Tips and Information] Privacy and How to Stay Anonymous Online on: November 15, 2019, 06:39:26 PM
- HTTP everywhere.
HTTPS Everywhere. But this is a security improvement - it does nothing for your privacy.

Wrong. With HTTPS, passive attack (e.g, ISP and anyone who's on your network) won't able to see what data you send to a server.

All they can get is metadata (IP destination, DNS request, packet size, etc.)
2565  Other / Beginners & Help / Re: [Tips and Information] Privacy and How to Stay Anonymous Online on: November 14, 2019, 06:21:15 PM
While it's not directly related to stay anonymous online, people who need anonymity/privacy shouldn't use Windows OS, OS based on Linux is the only choice.

1.Browse in private or in Incognito Mode

It only give privacy against people who might use your computer. Even if you use Incognito Mode, website can track you easily due to unique browser fingerprint.

3. Use anonymous email and communication
4. Hide your IP address using Proxies and VPNs

Good suggestion, but people should beware that :
1. Not all email, messaging, proxy and VPN provider who offer privacy/anonymity actually do it. Few VPN caught logging user's traffic and Telegram isn't encrypted by default.
2. If you don't change your surfing or browsing habit, someone could de-anonymize or track you, especially if you login to account with personal information when using Proxy, VPN or Tor.
2566  Bitcoin / Bitcoin Technical Support / Re: Master Public Key [HD Wallet] on: November 12, 2019, 05:41:38 PM
Out of interest where would you guys recommend backing up these "recovery keys"

Write it on a durable paper and store it on safe or/and hidden locationIf you have extra money and free time, you could write it on metal slate instead.

@fattails bitpay does not have a version of their app for blackberry. it only has an android, iOS and PC version.

Browser/web version should be accessible from browser on blackberry device.

Out of interest where would you guys recommend backing up these "recovery keys"

Not to be a stickler, but there are "private keys," and a "seed phrase."

Don't forget "mnenomic phrase" (which often confused as "seed phrase).
2567  Other / Meta / Re: calling all sauces... on: November 11, 2019, 04:32:16 PM
I prefer to spend my merit when i found good post/thread rather than merit a specific user.

But it's good idea for merit source who don't have much time, struggle to find good post or currently hoard sMerit (whether it's comes from source or not)
2568  Other / Beginners & Help / Re: A common myth- Segwit Reduce Fees on: November 05, 2019, 04:55:16 PM
which on the other hand, increases the block size into almost 4 MB. As a result, it's possible to include a lot of transactions into one single block

It's not 4 MB (byte unit), but 4 million weight (Weight unit). Block size (in byte unit) highly depends on how many SegWit transaction in a block.

We get one block each 10 minutes on bitcoin blockchain
On average. It is designed to give us 2016 blocks every 2 weeks.

But since bitcoin hashrate increasing most of the times, actual average/mean block time is somewhere between 9.4 to 9.6 minutes.
2569  Bitcoin / Bitcoin Technical Support / Re: Bitcoin.conf and best configuration params for fast sync on: November 01, 2019, 07:38:10 PM
Seems my config is not scaling the pc capacity.
Using task manager, I can see network usage is very low. Cpu usage it's really low. Disk usage it's high, but read/write are just 1 or 2 mb/sec. The HD perfo are highest., so, seems is not the bottlenek. .

Any idea?

Keep in mind that 1-2 MB/s read/write speed is random read/write speed, not sequential read/write speed (usually about 100-200MB/s for HDD). Bitcoin sync and most computing tasks uses random read/write speed.
Your HDD clearly is the bottleneck.

If you have SSD with low capacity, you could move chainstate file to SSD which could improve the performance significantly.
SEe https://en.bitcoin.it/wiki/Splitting_the_data_directory
2570  Bitcoin / Development & Technical Discussion / Re: Implementing a full node from scratch for educational purposes. Advice/thoughts? on: November 01, 2019, 07:07:40 PM
Don't forget that Bitcoin development focus on backward compatibility, where there are many version of output (P2PK, P2P2K, P2PWSH, etc.), scripting (newer OPCODES, OPCODES which used to be valid, etc.), node (network,  filter, bloom. etc.)

For example, you need to remove signature part of SegWit transaction when send transaction/block to old node.
2571  Bitcoin / Bitcoin Discussion / Re: "Game theory" free bitcoin question on: October 31, 2019, 05:08:07 PM
If miner/pool owner know about existence of the thread, then it'll be competition between miners and pool owners.
Whoever managed to mine next block is the winner and the miner get everything.

If the amount of "free Bitcoin" is ridiculous high (e.g. 6x higher than block mining reward), it's possible 51% attack, block withholding attack, re-org attack will happen which make game theory more complex Tongue
2572  Bitcoin / Development & Technical Discussion / Re: Download and Upload big file to blockchain program on: October 29, 2019, 05:58:11 PM
Not to mention storing huge data is not an easy task, and considering the block space, it might take weeks to save a single file.
but bitcoin blockchain size > 120 Gb and it not problem for miners. if blockchain size will be > 2 TB miners can use ZFS + ssd raid + Broadband network.
Users don't need have full node. they can use thin client for download/upload files.. or not?

That's because miner don't need to run full node to mine Bitcoin, only pool or miners who use P2Pool who need to run full nodes.

Besides, while most user won't run full nodes, most Bitcoiner agree that running full nodes should be cheap.

the "bitcoin" blockchain is a place to only store [money] transactions not files. the fact that it offers a special feature with an OP code shouldn't lead you to attempt doing that.

As long as the consensus allows it, people will try to do it. Even without OP_RETURN, there are many attempt to store files on Bitcoin's blockchain.
See http://www.righto.com/2014/02/ascii-bernanke-wikileaks-photographs.html
2573  Other / Beginners & Help / Re: [WARNING] Blockchain.com Clone - PHISING on: October 29, 2019, 05:26:16 PM
This kind of email usually go straight to your spam folder, especially if you use GMail which have great spam detection.

Gmx is white listed email addrss i think. Because gmx is email hosting provider too. Maybe this is the reason why their email not marked as spam.

That makes sense, but GMail also scan email content before determine whether it's spam or not. AFAIK detecting email impersonation should be easy for google.

You might want to report the mail as spam/spam if you haven't, so GMail filtering will be better
2574  Bitcoin / Development & Technical Discussion / Re: Bitseed alternative on: October 28, 2019, 06:33:19 PM
How about https://keys.casa? Their product is quite expensive IMO, but
1. most of their code is open source
2. they promise you'll get customer support
3. the CTO is Jameson Lopp

I never use their product, so i encourage you to DYOR
2575  Other / Meta / Re: Merit source and signaturetalk.org on: October 26, 2019, 06:23:55 PM
If you want high-quality posts, remove the signatures campaigns from the forum.

While it works, it certainly not best solution and theymos most likely won't stop it. There are other ways such as signature only enabled if you received x merit within last y days.

Besides, newbie account still can be used to bump threads (on few boards), shill certain altcoin/ICO and report bounty hunting activity.

If we remove all the signatures then the ranks will become irrelevant because the newbie and hero members, both cannot have the
signatures.

Avatar? Shorter interval between posting? No PM limitation?
2576  Bitcoin / Development & Technical Discussion / Is encrypted mnemonic technically possible? on: October 21, 2019, 01:37:10 PM
Since encrypted private key (BIP 38 which usually used by paper wallet) is possible, i wonder if encrypted mnemonic is technically possible?

If it's possible, it could reduce attack vector where attacker could stole your Bitcoin immediately after stole paper or file which contain your mnemonic phrase.
If it's possible and there's draft or implementation of it, please let me know Smiley

P.S. i'm not talking about extended mnemonic phrase.
2577  Bitcoin / Development & Technical Discussion / Re: Bitcoin adoption: A technical challenge on: October 21, 2019, 01:15:45 PM
Can you elaborate on "collaborative proof of Work method"?

OP, you have been talking about your "great idea" that will "save" Bitcoin, but never have you showed us a Github repo, or a Proof of Concept. Or a whitepaper?

OP made this thread Getting rid of pools: Proof of Collaborative Work.

@aliashraf you might want to mention relevant thread/posts that you've made

If something is truly decentralized, everyone must be able to access it equitably. If everyone can access it, then rich people can access it. If rich people can access it, then they can also access most of it.

If you truly have a solution for this (which might exist but I certainly can't think of one), I'd love to hear more about it.

I don't see how technology could solve this problem, each solutions have different weakness which can exploited.

Besides, not all people see equitably/fairness as best way to solve problem.

I think that ease to use depends mostly in wallets.
There are some wallets like coinomi which can be very convenient and easy to use.
You can just scan the QR code to send funds. What could be easier than that?

I think Pmalek's point is current wallet is still complicated for older people, even though younger people finds it very easy to use.
I can't think any real solution besides having someone to teach them how to use it few times before getting used and feel the convenience.
2578  Bitcoin / Bitcoin Technical Support / Re: TXs that include unnecessary UTXOs on: October 19, 2019, 07:09:39 PM
Without knowing the wallet which used to create the transaction, we only can make educated guess.

IMO it's not privacy feature because :
1. If the output have "neat" number (such as 0.01BTC), while the change have "random" number (such as 0.039653241BTC), then it's easy to guess to guess which one is output and which one is change.
2. Few wallet applies multiple change address as method to improve user's privacy
2579  Bitcoin / Project Development / Re: RPi Zero Physical Wallet (personal project) on: October 17, 2019, 07:03:59 PM
Interesting project, do you plan to add battery pack since you use word "Physical Wallet" ?

pywallet hasn't been updated in a year, so you might want to try other library such as https://github.com/ofek/bit.
It's easy to use (even though i never try cold storage feature) and claim to be fastest Bitcoin library.
2580  Bitcoin / Development & Technical Discussion / Re: python client lib to connect to btcd on: October 17, 2019, 05:49:34 PM
BTCD client written with Go (golang) and less popular compared with other client such as Bitcoin Core, so i doubt there's python library specifically made for BTCD client.

However, it uses JSON-RPC and according to it's documentation, it's fully compatible with the original bitcoind/bitcoin-qt (this statement might be partially wrong, since command on Bitcoin Core changed few times)
In theory, you can use Python library intended for Bitcoin Core JSON-RPC such as https://github.com/jgarzik/python-bitcoinrpc
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