CSE5095-010: Blockchain Technology

Lecture 5

Outline●

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Bitcoin Scalability

Transaction Throughput●

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Segregated Witness (SegWit)●●

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Payment Channels●

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A Payment Channel Pictorially I

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A Payment Channel Pictorially II

8Source: https://bitcoin.org/en/contracts-guide#micropayment-channel

Payment Networks●●

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● [Poon et al., 2014]

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Bitcoin Security

Security Definition●

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Security Properties I●

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Security Properties II●

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Security Issues●

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Double Spending●

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Sybil Attacks●

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51% Attack●●

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But, Tendency Toward Centralization●

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Mining Pools I●●

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Mining Pools II●

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Eclipse Attack●

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Goldfinger Attack●

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Denial of Service Attacks I●

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Is Bitcoin Anonymous?●

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24Source: https://shop.wikileaks.org/donate

No, it is not … Transaction are Linkable!

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References

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