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1821  Bitcoin / Development & Technical Discussion / Re: Can Quantum Computer's destroy Blockchain and Bitcoins[SHA-256 specifically] on: April 11, 2022, 12:17:36 PM
Don't worry, people know about it and there are some discussions on our mailing list: https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2022-April/020209.html

The mailing mention NTRU would make node perform extra validation, yet NTRU implementation show it's far faster than ECC-NIST (closest one to cryptography which Bitcoin use). Can someone explain why?


Source: https://tbuktu.github.io/ntru/
1822  Bitcoin / Bitcoin Technical Support / Re: Why the block height do not correspod to bitcoin core database size? on: April 11, 2022, 11:58:55 AM
Blocks can be lower than the "maximum" block size (currently 4 Weight Units).

To be more precise, maximum block size was 1MB before SegWit activation (August 2017) and now it's 4 million weight units (some people also refer it as 4 kWu).

Most of the first thousands blocks are empty and the rest (until Bitcoin became famous) only have a small number of transactions included,
so their size are only a few kB.

Or rather few hundred bytes.
1823  Local / Bahasa Indonesia (Indonesian) / Re: BITCOIN CORE on: April 11, 2022, 09:56:22 AM
--snip--
* Untuk jawaban yang detail sebaiknya kita colek agan @ETFbitcoin

Saya tidak familiar dengan file MANIFEST-... dan saya hampir tidak pernah menemukan diskusi yang membahas file tersebut, sehingga saya tidak bisa memberikan solusi.

Walaupun, pas awal-awal sempat ada error

Code:
leveldb: Compaction error: IO error: /mnt/ext/bitcoin/chainstate/811167.ldb: Bad message

Dan juga yang terakhir:
Code:
2022-04-10T15:48:11Z ERROR: ReadBlockFromDisk: Deserialize or I/O error - ReadCompactSize(): size too large: iostream error at FlatFilePos(nFile=40, nPos=18863821)
2022-04-10T15:48:11Z *** Failed to read block
2022-04-10T15:48:11Z Error: A fatal internal error occurred, see debug.log for details
2022-04-10T15:48:11Z Failed to connect best block (Failed to read block)
2022-04-10T15:48:11Z loadblk thread exit

HDD yang digunakan jelas bermasalah, coba
1. Cek status S.M.A.R.T dan lakukan testing pada HDD tersebut. https://wiki.archlinux.org/title/S.M.A.R.T.
2. Menggunakan kabel dan port yang berbeda.
1824  Bitcoin / Bitcoin Technical Support / Re: Looking for a way to add extra security on: April 11, 2022, 09:39:04 AM
Gmail? My god. The same service which openly reads all your emails and attachments?
says who?

Few random article,
https://www.theguardian.com/technology/2014/apr/15/gmail-scans-all-emails-new-google-terms-clarify
https://easydns.com/blog/2019/06/03/googles-gmail-scans-parses-analyzes-and-catalogs-your-email/

Quote
I'd like to mention that Google also could forbid access to "your" data. Usually either don't give the reason or mention vague ToS. And the appeal process isn't easy since usually you'll get robot response.

Check these articles,
Game developers, google play developers, those arent' your typical user. Not surprising at all that this might have happened to them. Not sure they deserved it but they shoudl have realized the risk...

Yahoo mail lost a huge amount of peoples' emails a long time ago. Stuff happens like that. you just have to roll with the punches.

If you're looking for case where regular user is blocked/banned, there are many such posts on twitter, reddit or facebook. Few random example from reddit (since twitter/facebook won't let you search without login),

https://www.reddit.com/r/google/comments/2qhjf5/my_google_drive_account_was_randomly_suspended/
https://www.reddit.com/r/GooglePixel/comments/7nrx07/google_permanently_banned_my_account_because/

Besides, the risk is applicable to all kinds of Google users.
1825  Bitcoin / Development & Technical Discussion / Re: [Guide] How to run a Bitcoin Core full node for under 50 bucks! on: April 11, 2022, 09:12:56 AM
I agree, although IMO a week for sync is long enough to discourage few people even if they don't need it up quickly.
Why that hurry, though? I am confident if there was a strong demand for faster IBD, we would have many more people working on and campaigning for stuff like checkpoints on the blockchain.

Some people simply not patient. Idea for faster IBD such as UTXO commitment already suggested several times, but receive little support/interest.

That makes sense, but there are few use cases where you need to use remote/centralized server. For example, small business or non-profit organization who run BTCPayServer.
Correct, yes. In that case, the node may be required to run the payment server on top of it, but those nodes shouldn't be considered part of the 'secure, reliable backbone' of the network, in my opinion.

It's not like we can tell a node is part of the "secure, reliable backbone" unless they use popular VPS which it's IP range is known without VPN or Tor.

Why do you think I should run a Bitcoin core wallet while there are many wallet/exchanges like Binance and Coinbase? I know it's essential if you hold a bunch of Bitcoin. But, I have such a tiny amount of Bitcoin (below $1K). I think I can hold them on Binance and stake it to accumulate more satoshi.

TLDR, better privacy and you actually have control over your Bitcoin. Although you can use SPV non-custodial (with Tor/VPN) such as Electrum to receive similar benefit.

I have a Ryzen 3 3200G CPU+ 16GB Ram + 2TB HDD PC. Can I install the full node in this setup?

Yes.
1826  Bitcoin / Bitcoin Technical Support / Re: Looking for a way to add extra security on: April 10, 2022, 11:14:53 AM
Quote
Said every single person who has ever lost their coins.
that guy that has his bitcoins stored on a hard drive. the whole world knows where the hard drive is located. he does too. problem is, he can't get access to the hard drive because they won't let him go near the garbage dump and he probably has anxiety knowing that maybe someone else has a plan to try and dig up his hdd out of that trash dump. seems to me, if he would have just used gmail to store his btc private keys, he would be good to go. but he wanted to store them offline to keep them safe. they're safe alright. safe from his reach.

I'd like to mention that Google also could forbid access to "your" data. Usually either don't give the reason or mention vague ToS. And the appeal process isn't easy since usually you'll get robot response.

Check these articles,
https://www.businessinsider.com/google-users-locked-out-after-years-2020-10
https://medium.com/@sixacegames/how-google-destroyed-our-startup-by-terminating-our-google-play-developer-account-6a8cca09ea88
https://arstechnica.com/gadgets/2021/01/googles-bots-decide-ass-subtitle-support-is-too-risque-for-the-play-store/
1827  Bitcoin / Development & Technical Discussion / Re: [Guide] How to run a Bitcoin Core full node for under 50 bucks! on: April 09, 2022, 12:47:53 PM
Drive prices are falling insanely fast even with all the chip shortages and shipping issues all over the world. I just got an 18TB drive (on sale) for $300 1 & 2 TB are under $50.
While I know that may be a lot of money for some people in parts of the world those are new prices. I have seen 1TB used for under $5 in places.

I agree, although it's different case if you need to host full node on remote server.

Time to download is probably not as big a concern then people who have bandwidth amount limited plans.

Aside from bandwidth, you also need to consider CPU speed, RAM capacity and HDD speed. HDD speed can be partially solved by moving chainstate directory to SSD or allocate very big RAM to Bitcoin Core (IIRC at least 8GB).
1828  Other / Beginners & Help / Re: BitcoinTalk Problem !!!!! on: April 08, 2022, 10:44:44 AM
Coinbase verified - 300$ (without documents) - 950$ with documents US

why garbage if im following the rules man >? you cant just post a negative comment just like that !!! OMG what's wrong with you people !!! im selling these accounts for marketing !!! marketing buying all kids of social media to promote their products !!! if u dont know these things don't even comment and judge me !!!

its not my problem to have so many scammers here !!! but to -4 trust just like that ? even you wouldn't accept this

Talking about rules, have you explained why verified Coinbase you sold isn't hacked? It's not allowed to sell hacked account and verified/KYCed account assumed to be hacked unless you give explanation.

You are only allowed to sell accounts/invites that you legally obtained yourself or through legitimate trades. If you did anything illegal in order to obtain an item, then you can't trade it on bitcointalk.org. Anyone found breaking this rule will be banned.

Accounts on sites that require KYC such as bank accounts, PayPal, etc. are assumed to be hacked unless you explain why they're not hacked.

1829  Bitcoin / Development & Technical Discussion / Re: NFT “secured” by bitcoin ? Confused on: April 07, 2022, 12:09:50 PM
I checked the website and found out the reason. RSK itself is Bitcoin sidechain network with smart contract capability[1]. Additionally they use merged mining which tied to Bitcoin network[2], so miner who mine Bitcoin also could mine RSK altogether. Carnaval itself use RSK which support token and NFT generation[3].

Carnaval, powered by RSK, develops the first marketplace on top of the most secure and most adopted blockchain: Bitcoin. Lower fees, awesome network effect and an incredible community are just a few of the advantages.

[1] https://www.rsk.co
[2] https://mining.rsk.co/
[3] https://developers.rsk.co/tutorials/tokens/create-a-collectable-token/
1830  Bitcoin / Electrum / Re: Installing my own Electrum server on: April 07, 2022, 11:37:44 AM
But currently ElectrumX is most popular version.
Imho ElectrumX is the most popular for "public" use. For local use it may be a bit of overkill. But actually that's only a feeling, I don't know that for sure.

I can understand why you think it's overkill for personal usage. But i'm not fan of lighter alternative Electrum Personal Server[1] since you need to enter each master public key (xpub, ypub or zpub) or address manually. electrs[2] might be best option for personal usage, but i never tried it.

Yes, if you want to install from source code, install some dependency and configure things manually[1]. If you want easy time, consider using it's Docker image[2]. Some time ago i made the short guide for using ElectrumX Docker image for Linux-based OS[3].

[1] https://electrumx-spesmilo.readthedocs.io/en/latest/HOWTO.html#howto
[2] https://github.com/lukechilds/docker-electrumx
[3] https://bitcointalk.org/index.php?topic=5332617.msg56915327#msg56915327

I may also give it a go under WSL when I get a bit more free time. Not necessarily because my current setup would be bad, it's just that I like a bit more the interface of mempool.space than of the block explorer I use now. So I'll bookmark myself these links  Wink

If you plan to try Docker, AFAIK you could just install Docker for Windows so you don't need to setup WSL.

[1] https://github.com/chris-belcher/electrum-personal-server
[2] https://github.com/romanz/electrs
1831  Local / Bahasa Indonesia (Indonesian) / Re: BITCOIN CORE on: April 07, 2022, 11:12:22 AM
Jangan dipaksakan mas jika sekiranya kapasitas HDD internalnya memang nge-pas. Oh ya HDD eksternal-nya itu yang dicolok langsung via USB saja atau menggunakan semacam enclosure docking yang ada tambahan lagi power untuk listriknya? Saya pribadi lebih prefer menggunakan yang ada tambahan power lagi untuk yang eksternal.
HD 2,5 bekas copotan laptop lama yang rusak Mobo-nya. jadi saya beliin Casing eskternalnya aja untuk supaya bisa konek ke laptop. Saya pernah juga nyari casing yang ada power suply ke listrik/enclosure docking, tapi katanya gak cocok karena lebih prefer ke HD 3,5 atau HD yang biasa di PC.

Sebagai alternatif, bisa menggunakan kabel dengan ekstra head sebagai suplai energi tambahan.


Sumber: aliexpress[dot]com/item/USB-3-0-Male-to-Micro-USB-3-Y-Cable-with-Extra-usb-Power-USB3-0/32922855027.htm
1832  Bitcoin / Electrum / Re: Installing my own Electrum server on: April 07, 2022, 09:49:21 AM
Where do I download the "best" version from?
For Electrum server it's debatable what's a "best version". Imho any version that works for you it's just fine.

But currently ElectrumX is most popular version.

Is this the correct place to download the ElectrumX server: https://github.com/spesmilo/electrumx

Yes, if you want to install from source code, install some dependency and configure things manually[1]. If you want easy time, consider using it's Docker image[2]. Some time ago i made the short guide for using ElectrumX Docker image for Linux-based OS[3].

[1] https://electrumx-spesmilo.readthedocs.io/en/latest/HOWTO.html#howto
[2] https://github.com/lukechilds/docker-electrumx
[3] https://bitcointalk.org/index.php?topic=5332617.msg56915327#msg56915327
1833  Bitcoin / Bitcoin Discussion / Re: What if all cryptocurrencies merged together? on: April 05, 2022, 12:24:23 PM
What exactly do you mean by merge? If you mean merge multiple cryptocurrency network into 1 big network, it's impossible since each network have different protocol.
1834  Bitcoin / Development & Technical Discussion / Re: Making Bitcoin and its Forks Turing Complete on: April 05, 2022, 12:01:11 PM
would you prefer i store a 60KB picture of my daughter's cat using 700 transactions or 1 transaction?   Cheesy
What we prefer is for bitcoin to be used as it was meant to, meaning as a payment system not a distributed database where arbitrary data is being stored.

Exactly, there are different protocol (such as IPFS and BitTorrent) which is more suitable for distributed data sharing. Besides, it's more practical to use OP_RETURN to share hash of the IPFS/BitTorrent instead.
1835  Bitcoin / Bitcoin Technical Support / Re: Initiate a transaction from a PK on: April 05, 2022, 11:34:19 AM
OP, do you mind sharing why exactly you need create to create a transaction from PK using library/3rd party API? It sounds like XY problem and we could suggest better solution if you tell what's your goal.

If you value security, I'd suggest downloading a wallet like electrum (from electrum.org). The initial sync of a new wallet can take a few minutes and a few MB but it's a lot faster than bitcoin core.

Electrum also support CLI[1] if OP use-case involve server which doesn't have GUI. The documentation doesn't mention all command though, so you need to run electrum help or check the source code[2]

[1] https://electrum.readthedocs.io/en/latest/cmdline.html
[2] https://github.com/spesmilo/electrum/blob/master/electrum/commands.py
1836  Bitcoin / Project Development / Re: [OPEN SOURCE] Serverless Anon Web Wallet on: April 04, 2022, 12:30:09 PM
- This wallet uses public APIs like Blockchain and Blockchair for UTXO data and they probably track your IP! Use a VPN.

I checked the live demo and saw there's network access to wss://api-pub.bitfinex.com/ws/2, did you forget to mention it?
1837  Other / Meta / Re: Personal Notes on user accounts or a private Trust feedback. on: April 04, 2022, 12:24:14 PM
It's definitely possible, several extension (such as MetaMask) use those feature. The real question is, are there any contributor willing to add and maintain such feature?
The local storage is probably not a problem. Just the notes will not be synced between multiple devices.

Synchronization problem could be solved with cloud storage API. But it means more difficult implementation/maintenance (developer side) and longer initial setup (user side).

If OP really wants to save info into browser, maybe a Firefox extension like Very Simple Notepad could help, although I'd prefer a proper local text file.

Might as well install proper note taking application if OP bother install such extension since usually it has more feature.
1838  Bitcoin / Development & Technical Discussion / Re: Explaination UTXO on: April 04, 2022, 12:13:58 PM
Here's alternative illustration with horizontal tree diagram. If the node doesn't have child (also called leaf node), it means unspent and vice versa.

Code:
Rustie    TX1    Derrick   TX2    Gloria
UTXO A  -------> UTXO B  -------> UTXO D
100 BTC    |     50 BTC     |     25 BTC
           |                |
           |     Rustie     |     Rustie
           |---> UTXO C     |---> UTXO E
                 50 BTC     |     15 BTC
                            |
                            |     Derrick
                            |---> UTXO F
                                  10 BTC

Code:
Rustie    TX1    Derrick   TX2    Gloria
UTXO A  -------> UTXO B  -------> UTXO D
100 BTC    |     50 BTC     |     25 BTC
           |                |
           |     Rustie     |     Derrick   TX3    Rustie
           |---> UTXO C     |---> UTXO E  -------> UTXO F
                 50 BTC           25 BTC     |     15 BTC
                                             |
                                             |     Derrick
                                             |---> UTXO G
                                                   10 BTC
1839  Economy / Service Discussion / Re: Any thoughts of Stormgain cloud mining? on: April 04, 2022, 11:35:21 AM
Anyone got any thoughts on them?

Sound shady or confusing. Looking at mining page[1], it's as if they perform mining and share small profit depending on your trading volume. I would say it's not worth since you need to trade about 150.000 USDT to get about 0.88 USDT daily which is very small compared with their fee[2].

Or maybe someone knows a better service?

Buy and configure your own mining hardware.

[1]  https://stormgain.com/bonuses/bitcoin-mining
[2] https://stormgain.com/fees-and-limits
1840  Bitcoin / Development & Technical Discussion / Re: Making Bitcoin and its Forks Turing Complete on: April 04, 2022, 09:46:28 AM
Quote
no, they are all valid transactions to users who just haven't been born yet
But you could just use OP_RETURN! Better: you could use OP_RETURN inside TapScript and just commit to the blockchain, instead of burning coins! There is no reason to burn anything, there is also no reason to bloat the chain. Another thing is that one commitment for the whole network would be cheaper than pushing every commitment for every user.
using OP_RETURN to store data in blockchains actually creates far more bloat then the method we are describing here.

the maximum amount of OP_RETURN data currently supported by the network per transaction is 80 bytes.... i think.. Undecided it has been awhile since i checked.

80 bytes limitation is only enforced by Bitcoin node though. If you're pool owner or can convince pool miner to add your transaction, OP_RETURN would create less bloat.
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