Functions, Hash Functions, Cryptography - Discussion

Blockchain and Bitcoin 101
#326

Hey, guys! I’m new here.
Can anyone tell me what this symbol ^ mean?
Please and thank you:)

1 Like
#327

^ is an exponent :slight_smile:

1 Like
#328

Hoi !
It is an exponent. Which means x^2
If X is 2 then you have to do the following math
x^2 = and the result is 4
All the best and see you soon

2 Likes
#329

I have a question regarding this symbol ^ what is its use case when calculating functions?

#330

nvm i found out from the above

#331

half way through the function explanation video and i think finally after 30 years of failure in math class at school- i might finally get it :joy:

2 Likes
#332

Better late than never :rofl:

1 Like
#333

Good info in this thread. Thanks.

#334

Hi guys, in the hashing reading assignment question 2. is Why is this hashing algorithm really hard (almost impossible) to brute-force?
my answer was - Miners play a big role in this as they are constantly checking the cryptocurrency network for any uploaded transactions, any attack on the network would require more than 51% of all network hash power to be altered. With cryptocurrency being a decentralised infrastructure no single person, organisation or country owns more than 51% of the hash power resulting into any cyber attacks being highly unlikely.
Am I on the right track with that question, after I submitted my answer I read a lot of others and mine didn’t have a lot of correlation to other answers, any feedback would be much appreciated :grinning:

#335

Curious about what is gonna happen with the network when all btc is mined? Are they gonna use another way to verify transactions if there’s no incentive for the miners? Or am I missing something?

#336

  1. Functions take a unique input to create a unique output and it only goes from input to output not other way round.

  2. f(2) = 4 f(7 )= 17 f(0) = 0

  3. f(x) = {x/4-5}

1 Like
#337

I think I answered this in your homework review :wink:

#338

No way to know for sure. One idea is that by that time miners will be able to get compensated just by the tx fees because the price of Bitcoin will be that high. This will happen somewhere in 2140 so there is still time to figure it out. :slight_smile:

2 Likes
#339

Okay! Thanks for clearing that up :slight_smile:

#340

Somebody here uses decentraland? We could meet everybody there?

#341

wrong thread to post my answer

#342

Hello I have a doubt with Public and Private Key Cryptography, specifically in the digital signature part. If the private key it’s supposed to keep it in secret, how will it be used as a sign? or am I missing something?

#343

Private key is not used as a signature. It is used to sign a message. :slight_smile:

1 Like
#344

Thank you very much! Now I understand :grimacing:

#345

Bitcoin is less secure than Ethereum because Bitcoin does not have a ‘bug bounty program’ like Ethereum does. As far as high tx fees, hopefully ETH 2.0 will solve that. If not, I am confident Cardano will solve the issue though there is practically no developer community/culture involved with Cardano compared to Ethereum at time of writing.

-Cheers,
Taylor