TED Talks: Block chain

Video:

Presentation:
https://prezi.com/view/qI4Ek8FE9CPP5bWbKAft/
	
Lee Wright	10:03 PM
new paradigm of crytography (crip TOG ruh fee)
algorithm (AAL guh RITH um)
breakthrough
that is coming
Blockchain is about TRUST.
t
	
Gerard Arbat	10:05 PM
printing press
	
Lee Wright	10:07 PM
Knowledge gap was related to printed materials becoming available.
t
mass production of knowledge
Power Gap
generators
	
Gerard Arbat	10:10 PM
steam engine
	
Lee Wright	10:10 PM
manual labor
not solved in India yet.  ;)
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Lee Wright	10:10 PM
before machines, slavery
colonialism
Distance Gap - solved by Internet
Who can we trust?
Blockchain will make electronic record-keeping more tamper-proof, more trustworthy.
A single trust authority for each field of industry.
Microsoft Windows maintains trust certificates on our computer for us.
	
Vasanth Prabakar	10:14 PM
t
	
Lee Wright	10:14 PM
"Trust Center"
Credit, mortgages, loans - need trust
middleman - credit agencies, banks
credit card agencies
Hash-algorithm-protected transaction records
each record has credentials
invalid credentials=> that record is replaced by the last known valid record
	
me	10:20 PM
https://prezi.com/view/qI4Ek8FE9CPP5bWbKAft/
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Lee Wright	10:21 PM
Hash
encoding
encrypting
a checksum
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Lee Wright	10:23 PM
32 bytes hash code
collision = same hash code by coincidence
1 chance in many billion
32-bytes is a large volume of numbers
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Lee Wright	10:26 PM
similar to a checksum
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Lee Wright	10:28 PM
hash = a unique ID for EVERY record
	
Vasanth Prabakar	10:29 PM
c
	
Lee Wright	10:29 PM
Digital signing
public and private key pairs
untamperable = tamper-proof
Each transaction is compared to the transaction chain.
If any previous hash is different, then the new record is invalid.
	
Vasanth Prabakar	10:38 PM
c
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Vasanth Prabakar	10:45 PM
q
	
Lee Wright	10:47 PM
A "miner" creates a special string to make your hash tag have a "special appearance".
	
me	10:49 PM
aa11
md5(aa11)=0x1213aasd1
aabb
md5(aa11aabb)=0x12130000
aabb
	
Gerard Arbat	10:50 PM
q
	
Vasanth Prabakar	10:50 PM
https://www.betterbuys.com/estimating-password-cracking-times/assets/images/password_time_and_length.jpg

One comment

  1. http://onlinemd5.com/

    it’s onlice service of counting md5 hash

    MD5 & SHA1 Hash Generator For Text – use that (second form)

    For instance my message is “Madrookers rocks!”

    20D3477E1A2E12C82E815F5656CBF3FC

    it hash

    to put that to blockchain I need additional string to make hash ends with 0000, four zeroes

    You can role play miner now, to find this string

    Just to understand the complexity

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