⛓️ Blockchain & Web3 · State Machine
Blockchain Transaction States
The states a blockchain transaction goes through from signing to final confirmation, including replacement and dropped transactions.
Drawing diagram…
What this diagram shows
- A transaction waits in the mempool until a block includes it
- Low fees can leave it stuck, so it can be replaced
- Apps wait for several confirmations before treating it as final
Prompt used
State machine for an Ethereum transaction: Signed, Broadcast, Pending in the mempool, Included in a block, Confirming as more blocks are added, Final after enough confirmations. A pending transaction can be Replaced with a higher fee or Dropped from the mempool. An included transaction can be Reverted if the contract call fails.
Mermaid code
stateDiagram-v2 [*] --> Signed Signed --> Broadcast Broadcast --> Pending: In mempool Pending --> Included: Mined in a block Pending --> Replaced: Resent with higher fee Pending --> Dropped: Evicted from mempool Included --> Reverted: Contract call failed Included --> Confirming Confirming --> Final: 12 confirmations Final --> [*] Reverted --> [*] Replaced --> [*] Dropped --> [*]
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