What Is ยท Technology
Blockchain
Shared ledger with consensus
Blockchain stores ordered records in blocks linked by hashes; participants validate new blocks via consensus.
- distributed ledger
- hash chaining
- consensus
- immutability
- peer-to-peer
Structure
Transactions are grouped into blocks; each block references the prior hash.
Consensus
Nodes agree on valid blocks using proof-of-work, proof-of-stake, or variants.
Trust Model
Security comes from decentralization, cryptographic signatures, and auditability.
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Guides
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Comparison
RAM vs Storage
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How it works
Global Positioning System
GPS uses timing signals from satellites to calculate a receiver's position on Earth.
Why it matters
Cybersecurity Hygiene
Cybersecurity hygiene lowers everyday risk through habits like patching, backups, password management, and safer defaults.