Academy Lesson faster-block-propagation

Summary

Relay improvements that reduce stale races and selfish edge.

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Graph Neighbors

Direction	Relation	Node
Outgoing	WEAKENS	Selfish Mining
Incoming	MITIGATED_BY	Selfish Mining

Related Nodes

Selfish MiningAttack

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Lesson 1/80% complete

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What is Bitcoin?

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Glossary

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Pseudonymity vs Anonymity

Bitcoin is pseudonymous: addresses are public identifiers without built-in real names, but flows can still be traced and clustered.

Nodes vs Miners

Nodes enforce consensus rules by validating blocks/transactions. Miners order transactions into blocks and compete in proof-of-work.

Wallets vs Keys

Wallets store and manage cryptographic keys used to sign spends. The bitcoin itself exists as UTXOs on the blockchain state.

Base Layer vs Lightning

Bitcoin base layer optimizes final settlement and security. Lightning optimizes speed and cost for day-to-day payment flow.

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