Blockchain Foundations
A Smart-Contract Read Call Does Not Always Require a Paid Transaction
Distinguish a smart-contract read call from a submitted transaction, including gas accounting, provider charges and the state used for a query.
TOKENS · NETWORKS · CONTEXT
smart contracts
Blockchain Basics
A Proxy Contract Can Keep Its Address While Its Implementation Changes
When inspecting an upgradeable smart contract, identify the proxy, its current implementation and who can authorise a change.
Blockchain Literacy
Verified Smart-Contract Source Is Not the Same as a Security Audit
Understand what explorer source-code verification establishes, then inspect audit scope and deployment details before treating a badge as evidence of safety.