Academy Lesson transaction

Summary

State transition that consumes inputs and creates new outputs.

No security notes for this node yet.

Direction	Relation	Node
Outgoing	PART_OF	Block
Outgoing	CREATES	Output
Incoming	PART_OF	Input
Incoming	PART_OF	Output
Incoming	VALIDATED_BY	Script
Incoming	VALIDATED_BY	Consensus Rules
Incoming	VALIDATED_BY	Locktime
Incoming	DEPENDS_ON	Mempool
Incoming	DEPENDS_ON	Confirmation
Incoming	STRENGTHENS	Child Pays For Parent (CPFP)
Incoming	EXPLOITS	2010 Value Overflow Bug
Incoming	EXPLOITS	CVE-2018-17144
Incoming	EXPLOITS	Pre-SegWit Transaction Malleability

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Current Guided Lesson

What is Bitcoin?

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Hover the headers for quick tooltips, then read the short canonical distinction.

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

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

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

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