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21  Economy / Currency exchange / Re: Selling Bitcoin min 50btc to 1000btc on: November 14, 2019, 05:44:38 PM
assuming for 8700 USD per BTC, a 500 Bitcoin (BTC) trade has a value of 4,300,000 USD
1000 PHP (Philippine Peso) bill is the biggest denomination weighing almost 1g.

1000 PHP = 19.7 USD

so 4,300,000 / 19.7 = 220,812 bills or 220,812 grams

500 BTC in Cash would weigh 220,8 Kilogram

So, whoever would do this shady type of trade, make sure you bring some friends to help you carry the cash.

Edit: don't forget the guns  Roll Eyes
22  Economy / Currency exchange / Bitcoin for PayPal - Transfer made while sharing screen (NO CC) on: November 14, 2019, 03:49:36 PM
PayPal is crap (can't be said enough) but I want to buy BTC with PayPal and will do everything possible, to proof that I won't charge back or in fact, cannot even do it.

1) will use Friend and Family to transfer
2) will do a video call sharing my screen while I do transfer
3) will show that not a single cent from the funds has as source a Credit card, hence no Credit Card charge back risk
4) declare my identity, face, tshirt size, whatever one needs to feel good about it
5) can do an offline contract with just PayPal Settlement

anyone interested, DM me

we can use Localbitcoins, Vertex.Market or Paxful as Escrow.
23  Bitcoin / Bitcoin Discussion / Re: How someones made 184 Billion Bitcoin appear out of nowhere on: November 07, 2019, 08:43:59 AM
I didn't know about this history.
Are there any reference of this event here in bitcointalk forum? Something written by Satoshi?

That hacker is not so evil. He exposed the bug in a time when things could be easily fixed. Thank God that happened long ago, and not recently.

that is just what i thought. if that would happen now, that would be the END and with the pace the bitcoin community is going the fix would have taken a good amount of time
24  Economy / Currency exchange / Re: Selling Bitcoin P2P. Better rates than anywhere else guaranteed. on: November 07, 2019, 08:19:04 AM
what is the fee?
25  Economy / Currency exchange / Re: ★★★ TRADE BTC TO PAYPAL & FIAT CURRENCIES TO BTC HERE ★★★ on: November 07, 2019, 08:16:54 AM
can we use Vertex for a trade as escrow or what escrow do you use? With PayPal i am very concerned
26  Economy / Trading Discussion / Re: Anonymous Peer 2 Peer trading platform on: November 07, 2019, 08:02:00 AM
I have done a trade with Skrill and it worked well. The workflow and User experience was actually quite nice...will do more trades I believe.

I noticed you changed the company to a UK entity from a Cayman Island company just within the last 48h.
Are you based in the UK now or how do we have to understand that change?

27  Local / Trading und Spekulation / Re: Neuer Marktplatz Vertex - Peer to Peer on: October 31, 2019, 06:06:20 PM
Page sieht gut aus aber warum kann man sich nur mit einer lokalen nummer registrieren? ich würde gerne in der Schweiz registriert sein aber mit UK Nummer.
Ist die Seite versichert?

28  Local / Trading und Spekulation / Re: Der Aktuelle Kursverlauf on: October 31, 2019, 05:59:21 PM
gute alte bitcoin Freitag. Sage saurer Apfel auf Samstag
29  Other / Serious discussion / Re: Is it the end of Apple? on: June 28, 2019, 09:39:32 AM
Look, I personally keep saying that apple will go where they came from faster than anyone could imagine. People laugh at me. Even now, and probaly on this very thread.

BUT be honest:

do you really believe that a company whos main revenue is from Hardware Sales (check their financials) and this hardware is not even produced by them has a reason to be such highly evaluated?
do you really believe that a company who has basically 1-3 products out there (ipad = iphone in different size) should be such highly evaluated?
do you really believe that apple delivers anything to the world that we truly need?

If you do, then we disagree.

I have said it many times: THE WORLD WOULD FORGET ABOUT APPLE IN AROUND 1 WEEK.
What does it mean? It means that if apple would stop RIGHT NOW (all their iOS would crash for good remote controlled) all their work, within 1 week everyone would have moved on.
Use a samsung phone, or any other phone (there is plenty), a lenovo laptop.

Why does this not stand with Microsoft, SAP, Oracle, any other serious tech company that doesn't just design a phone?

Microsoft for example has its foot in almost every business on this planet. Databases, Server OS, File Management, User Management, CRM, you name it and they have it.

A MS Dynamics on a MS cloud is way more likely to stay with microsoft even if they raise the prices by 20% or deliver a bad service. A SQL Server Database that cost 100k USD won't just be replaced that quickly.

Apple: If 1 phone is crap or would need a recall, apple is gone!

And anyone who comes now saying that macbooks are also great. WELL MACBOOKS SUCCESS CAME THRU THE IPHONE AND IPOD.
I challenge anyone to bring me one argument that speaks FOR a macbook and against any windows 10 laptop or Ubuntu laptop besides design.

30  Other / Politics & Society / Religion, Why is it still there? on: June 28, 2019, 09:14:59 AM
I am still surprised, how many people are religious and believe in any sort of a God that created earth and life. I do not want to judge them but I personally can just simply not fathom, how weird such a believe is.

I think by now, 21st century, we should have been over this and yet, entire nations worship a God that is according to them pulling the strings and telling them how to live. More people die each year due to religious punishment or extremism than from various other things we create laws against!

Now I am a huge Fan of Carl Sagan, probably the "best" public person to ever live in my view. He of course, is not an atheist (public people barely are. its bad for business) but he claims that if god are the alws of physics and the universe, he believes in god. Ok, I sign that too.

Assuming God exists as by the major religions: A god that makes you

- pray 5 times a day (muslim)?
- Worship him (all)?
- Stone woman that commit adultery to death (all)?
- forbids you to eat certain things based on no scientific reason (all)?
- Says the world is flat (Christianity)?
- Gives you foreskin just to then remove it again (muslim, jews)
- Tells you not to drink alcohol but heroin is ok (muslim)
- Threatens you to burn in Hell (Christianity)

(sorry if I wrote something wrong but its been a while since bible lessons!)

Is not a nice God.

How can one still functioning in this modern world while he still believes that this all is true and this GOD is in charge?

This thread is not to create any hatered or so against religious people. Live and let live.

I just wonder how you watch a space documentary and then go to church? How does ones brain handle this contradiction?

31  Bitcoin / Project Development / Re: How to fund a PORN? on: June 28, 2019, 08:55:44 AM
I am Absolute not in that business and I only heard from such videos thru a friend (of course) but what I believe would be something that might work since it works in any other damn business is:

- Product placement in your movie
- Girls wearing a branded tshirt or some other sort of item that makes a brand name stand out
- Able to decide what is going to happen (even if just partially)

5,000 USD is absolute nothing in terms of fundraise and a simple promotional video on youtube with a wanna be influencer is going to cost you 5k and you will have max 50k views.
when I see (sorry, i mean when my friend tells me) how many views some videos get on certain platforms, this is definitly for an investor worhwile if you can make sure, that video will be apealing and the girls is top.

32  Alternate cryptocurrencies / Altcoin Discussion / Ethereum Dropped & Replaced on: March 21, 2019, 02:39:05 PM
I once more encounter a problem with Ethereum. We have sometimes certain amount of collateral on 1 address and then send out 5 to 6 payments that should go as fast as possible out (clients don't like to wait for refund).
Now our software works great, but when 1 user tries to refund to multiple adresses, we face often than only 1 of the transactions gets thru, while the others get "Dropped & Replaced".

as far as we know, this happens due to the fact that the last transaction gets confirmed first and then all others are replaced by this transaction. The problem is, that the TX gets officially the status "Success" which then by our system is detected as "work done".

we already placed a 10 second delay into the sending mechanism and we always use the same amount of gas for all transactions, but somehow, that seems to have improved it but by far not eliminated it.

does anyone have an idea, how to avoid and if not possible, track the transaction as dropped so we can reissue one?

the option of spreading the funds to multiple adresses is not viable

33  Bitcoin / Bitcoin Technical Support / Re: Address List Hardware Wallets on: February 18, 2019, 10:35:13 AM
What i mean is, isn't it possible to do like a transaction FROM an address and just plug in the right Trezor or Ledger and then it automatically finds the key for it, signs it (by approving on the device) and sends it?
That sounds exactly like using a "watching only" wallet + "offline signer" (air-gapped PC or hardware wallet) solution...

It would appear that your issue is that you need "coin control"/"spend from address" features + "Hardware wallet" support in the wallet software that you are using... for Ethereum. I know that what you're wanting would probably be possible with Electrum, but that is bitcoin only.

Electrum has really good coin control features and you can see a list of addresses (set to 25 by default, but possible to increase the gap limit if required)... and you can "spend from address". It also supports Trezor and Ledger.

Unfortunately, as far as I'm aware, no-one has created something similar for Ethereum... as most people just use MyEtherWallet or MyCrypto wallet... and most simply use one ETH address due to the way that network works.

Yes you got that absolute correct. Also in regards to electrum. I use electrum for BTC and I think it is the best wallet out there, giving you full control.

Hopefully something similar will come out soon. It would already help, if MEW would create a view where you can see 100 addresses without pageing and do a transaction on the same screen just by selecting the radiobox of that address.
34  Bitcoin / Bitcoin Technical Support / Re: Address List Hardware Wallets on: February 14, 2019, 02:27:51 PM
I thought so that this would be the right way. but how can i then specifically send from 1 address?

generating them is step 1, but if i then have to send from lets say 10 specific addresses that i have the private key on my Trezor, how would that work?

i cannot just paste the public key (address) and then sign it with my trezor. i don't know any software that allows that or am I missing something?
From my understanding, there should be no way to get the xprv (the xpub's equivalent private key) from your Trezor, so you would have to still authorize each transaction manually. This is because the private key never leaves your device.

Additionally I don't think you can automate the transaction signing process, as by design you'll always have to confirm any signing action on the physical device itself.

However why don't you use a hot wallet for distributing coins from multiple addresses? You could make one transaction from your Trezor to the hot wallet of your choice and then automate the process from there.

It would work well with a hot wallet for automation. But lets say 1 person manages the funds for 20 individuals. everyone of them has like 2-3 different addresses, depending on the need. Now the private keys are on a Trezor.

If a individual wants to send out funds from one of his addresses, i will know (own address management tool) that its on Trezor A (for example). But right now, i write down page 3. so if i go to mycrypto or MEW, i know how to find the address from which to send to.

What i mean is, isn't it possible to do like a transaction FROM an address and just plug in the right Trezor or Ledger and then it automatically finds the key for it, signs it (by approving on the device) and sends it?

35  Bitcoin / Bitcoin Technical Support / Re: Address List Hardware Wallets on: February 13, 2019, 04:21:27 PM
You use the XPUB for that. It's available in the Trezor wallet by clicking on the device name > "Account public keys (XPUB)".

Be careful with those keys - while not allowing spends, they allow anyone to list all the public addresses in your wallet.

These two tools can be used to get all the addresses given a XPUB:

https://github.com/dan-da/hd-wallet-derive
https://github.com/dan-da/hd-wallet-addrs

I thought so that this would be the right way. but how can i then specifically send from 1 address?

generating them is step 1, but if i then have to send from lets say 10 specific addresses that i have the private key on my Trezor, how would that work?

i cannot just paste the public key (address) and then sign it with my trezor. i don't know any software that allows that or am I missing something?
36  Bitcoin / Bitcoin Technical Support / Address List Hardware Wallets on: February 12, 2019, 04:50:55 PM
I was wondering if someone can tell me how i can get all the addresses that TREZOR or Ledger Nano S generates can be seen in 1 list.

Let's say i want 100 addresses and send to each one ETH.

Right now, i am doing this with "next page" on MyEtherWallet but this just can't be the way to do it. I have to make a note like "page 4 address 3".

I mean what if i use 1000 addresses, i keep clicking next page for 1h?

37  Economy / Scam Accusations / Re: YOBIT Scam Exchange on: February 05, 2019, 12:03:52 PM
they send emails from 46.167.245.207 which is a fake mailer.
this exchange is a complete scam.

good I check email headers.
38  Alternate cryptocurrencies / Tokens (Altcoins) / Re: [ANN] [ICO] 🔥Vertex Marketplace - The worlds first ICO Aftermarket. 🔥 on: February 05, 2019, 11:27:15 AM
so seems you guys went live! when is the exchange listing? can i still buy before the listing?
39  Bitcoin / Development & Technical Discussion / Re: Storing of Bitcoin & other private keys in RDBMS on: November 26, 2018, 04:16:18 PM
I've attempted simular stuff in the past.. I used a combination of pgp encryption, aes_encrypt and encrypted bsd partitions on a mysql server that was only accesible over a local vlan... However, in case of a hot wallet, there is no 100% secure setup.

But in my setup, somebody with access to the frontend server could not decrypt the private keys because they were pgp encrypted, and the pgp private key wasn't stored on the frontend. The aes pass wasn't stored on the mysql server, tech guys from the hosting firm did't have my root pwd, and if they would have rebooted my machine to reset the root pwd, they would have been faced with an encrypted disk... However, my weak point was the server where the core wallet was stored since it had to have access to the private keys in order to handle outgoing payments so it needed to be on the same vlan as the mysql server with one interface, and it needed both the pgp pk and the aes password

I am having the same concept but the weak spot will be the API server who knows the private key for decrypting the bitcoin private key.

when i read about the latest and biggest hacks, actually most of them started with infected hardware from an admin. i think maybe protecting the server is one thing (offline, whitelist IP access, no SSH access to DB and Web application firewall) but for example bitstamp, all of this would not have helped as far as i know.

multi sig is the solution, yes, but when 1 server is compromised, most likely the others are too.


40  Bitcoin / Development & Technical Discussion / Storing of Bitcoin & other private keys in RDBMS on: November 21, 2018, 03:12:52 PM
I am currently wondering, how an application can securely store a private key of a Bitcoin wallet or Ethereum address in a RDBMS (MySql, PostgresSQL, MSSQL, Oracle) database.


The application needs to handle hundreds of transactions micro to bigger ones in a day and must create addresses (wallets) including their private keys.

To send out automatically a transaction (Event driven), the system cannot rely on cold storage services such as BitGo that take hours to release a transaction and are very costly.

Currently, I would do it that the DB server has no Internet connection and can only be accessed from the API via local connection. However, if the API server is hacked and someone gets access to it (lets assume it happens), he can if he knows how extract the data from the DB, decrypt it (via api itself) and send funds to an address of his choice.

Don't get me wrong, i believe penetrating such a setup is not that easy and would be considered very secure, if it wouldn't be for millions of dollars saved in a relational database (literally).

I just can't think of a solution that has automatic and almost instant transaction generation and full security.

If someone knows his stuff, I would very appreciate some input.

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