bitcoin

Westcity
creating a wallet as reply to Marc Felt Uneasy

Abraham Kim
gas station bitcoin key wallet seed phrase
"Buy Bitcoin Here!"

The gas station beckoned you to buy bitcoin at a kiosk inside. A decade ago Max had purchased a nontrivial amount. A friend had gotten him to buy this obscure entity at what seems today an absurdly low price. At the time he was confused by it all....

Westcity
what are the chances? as reply to The Chances

Abraham Kim
ethereum bitcoin private key Blockchain Spacecity
The chances were slim. Considered impossible actually. To guess anĀ  ethereum orĀ  bitcoin address' private key. You could just guess numbers... because that's all aĀ  private key was. And if you got the right one then theĀ  Blockchain gave you access as though you were the rightful owner. Because to...

Westcity
presumably as reply to We're Out

Abraham Kim
calories life bitcoin BTC email
This time the dumbass sent Diego the public key or the wallet address. Diego smiled. He used the term dumbass in endearment. What silly goose would send their private key to a stranger over email?

He made sure it was still the same dumbass. He could tell it was, because the...

Westcity
dead phone as reply to Like Spring

Abraham Kim
bitcoin startup success
Mark Love. The name slipped off his tongue. He laid on the floor beside his head, which had a six hundred dollar mattress. When he wasn't sleeping he felt more comfortable laying on the carpet. He liked the way it felt against his bare feet. He liked the way it...

Westcity
is it real? as reply to Torn to Bits

Abraham Kim
email tech bitcoin credit cards money Subaru dark forest anxiety Lexus
"Hello?"

"Will?"

"Oh hi mom."

"Why do you sound so--" she stopped. "-- are you coming home?"

"Yeah--"

"I mean you don't need to of course. You're an adult. But we were wondering. We'll keep the lights on if you are planning to."

"I'll be home soon."

Will shut the phone off and stared at it. Waiting...

notebooks as reply to Take good care of the plant

Abraham Kim
2010s bitcoin coffee fiat ETH money laundering criminals ledger whale alert
"In the early 2010s people assumed bitcoin would be used for money laundering , which is reasonable given that bitcoin used to be this obscure entity dwelling in the dark corner. It's not farfetched to believe such a thing would be used by criminals to hide money. But today with...

Money
What to do with 2000ā‚¬ per Month

Philipp Haidenbauer
Austria money Apartment ETFs BTC bitcoin ETH ethereum whisky lottery tax-free income Investing mortgage DOT Polkadot trading bot cigars self-control
Yesterday I bought a "Brieflos", a small paper thingy which you rip open and inside it says if you won something. The kind I bought hold the premise of getting 2000ā‚¬ per Month for ten years: "Zehn Fette Jahre" (ā€œTen fat yearsā€).

From the two I bought I got one...
January 9th - Blockchain "Analysis"
1. -> would be easy to do. Just look at a block explorer :)
2. -> There isn't a breach (collisions) for the SHA256 Algorithm yet.

So as long as you can't produce the same hash for different input (a
collision
https://en.wikipedia.org/wiki/Collision_attack & https://en.wikipedia.org/wiki/MD5) it would take hundreds of years (or even thousands) to land a match with brute force.

The SHA256 has 2^256 (1.1579209e+77) different combinations so even if you would have 1 million hashes per second it would take 1.1579209e+71 seconds (= 1.3401862e+66 days -> divided by 365 days per year it is still 3.6717431e+63 years) to calculate all combinations.

If you up the hash rate to one billion per second (10^9) you merely change the years: 3.6717431e+60.

bitcoin
currently has a total hash rate (https://www.blockchain.com/charts/hash-rate) of 175076 million. Using that as input for our calculation it would take 2.0972281e+58 years to calculate all hashes in SHA256 :)

So as long nobody is able to find an error inside the algorithm (collision attack) you can't brute force address keys because it would take way more power thanĀ 
bitcoin
is currently consuming. And if you got similar large power rates asĀ 
bitcoin
has, a 51% attack (https://www.coindesk.com/learn/what-is-a-51-attack/) would be "way easier" to perform.

But again, you would need as much power as the whole bitcoin network currently has, and a little bit more.
Philipp Haidenbauer

January 9th - Blockchain "Analysis"

Philipp Haidenbauer
bitcoin reddit ETH Blockchain cryptocurriencies implement wallet ethereum PrivateKey Solidity SmartContracts
As I have written before I'm not only investing in Blockchain Projects (and thus cryptocurriencies ) I'm also prototyping stuff and sometimes I'm trying to implement things.

One thing I've implemented on multiple chains before was a "find" cryptos thing. Basically, I'm trying to guess addresses. With bitcoin , there is...