Blockchain concepts explained with care and context.
Recognise a top-level Ethereum contract-creation transaction by its missing ordinary recipient field, while distinguishing it from a failed transfer or a call to a factory contract.
Distinguish current blockchain state from historical state queries, and check an Ethereum node provider’s retention and method support before relying on old-block results.
Distinguish a block timestamp from the time you submitted a transaction, and keep the displayed time zone visible when checking blockchain records.
When inspecting an upgradeable smart contract, identify the proxy, its current implementation and who can authorise a change.
Separate an ERC-20 transfer event from a balance query. A transaction log describes an event, while a balance reading depends on the contract and block context.
Understand what explorer source-code verification establishes, then inspect audit scope and deployment details before treating a badge as evidence of safety.
Understand what a watch-only wallet can observe, why its balance does not prove spending control, and which information still deserves privacy.
Burning tokens reduces one part of supply, but issuance and unlocks can change the wider picture. Compare the same period and supply definition before drawing conclusions.
Understand the account nonce behind ordinary Ethereum transaction ordering and inspect a pending sequence before attempting another wallet action.