What is Blockchain? - Speaker Deck

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What is Blockchain? ーfor beginnersー Tomoaki | Waseda BITBEARS

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＠tomoaki25_official I am a illustrator designer. A Blockchain researcher & developer. The Co-founder of BITBEARS. And then a student.

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Active on Mon.&Tue. at Waseda University building 3! Feel free to DM us if you’re interested in joining!:-) @bitbears_wasedablockchain

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What is BLOCKCHAIN? ❓

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P2P network Blockchain is a decentralized P2P network. Decentralized

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Why decentralize? Every time you use the Internet, you have to access a server from your device. Current Internet Server

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Problems of the Internet.

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Equifax data breach Hackers exposed the Social Security numbers, drivers licenses and other sensitive info of 143 million Americans

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Edward Snowden’s confession Edward Snowden whitsleblower of The NSA surviilance

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If decentralized... Transparent

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Safer when hacked

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Hard to supervise

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P2P network What is P2P and Why?

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If P2P...

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You don’t have to rely on a third party. “Trustless”

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How does BLOCKCHAIN work?

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Blockchain contains blocks connected to chain.

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What is Minning？ Gold Bitcoin

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Each block contains a “previous block hedder”. transactions transactions transactions previous block hedder previous block hedder previous block hedder nonce nonce nonce Block hedder Block hedder Block hedder Block n Block n+2 Block n+1

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If changed... Each block contains a“previous block hedder”.

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Blockchain is like multiple layers. New blocks Recent blocks Old blocks Very hard to change Almost impossible to change You shouldn’t even think about changing them

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Blockchain is immutable. immutable

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Why Bitcoin matters? Blockchain Users Miners (12.5BTC+Fees) Transaction Transaction Transaction want to use Bitcoin but also want someone to check the transactions. want to earn Bitcoin.

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Summary Blockchain is... Decentralized P2P Transparent Immutable Bitcoin is... Decentralized Autonomous

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Thank you