Group 2 · How the road holds

Mempools, queues, and “sent” vs “settled”

the waiting room

The idea

After you broadcast a transaction, it often waits before it is included in a sealed ledger entry. Many chains call that waiting area a . On the XRP Ledger, waiting/relay uses a and an open-ledger cost (load can raise what fee is needed) — not a Bitcoin-style mempool. Source: Transaction Cost. Sent in an app is not the same as on the ledger.

Why it matters

A spinner can lie. Stuck transactions and “fixers” who want your seed are a classic scam pair.

How it works

Sending happens in stages. First, your wallet signs the transaction and submits it to a server. Second, the server checks it and shares it with others, and it waits. Third, the network includes it in a block or ledger version. Fourth, that version is confirmed or validated. Only after that last stage is the payment settled.

On many chains, the waiting area is a mempool. Builders usually pick the transactions offering the highest fees first, so a low fee can leave yours waiting a long time.

Real example: on the XRP Ledger, there is no Bitcoin-style mempool. A transaction that pays enough goes into the current open ledger. When the network is busy, the cost to get into the open ledger rises, and transactions that pay less can wait in a transaction queue for a later ledger. Your app might say “sent” at stage one. To know a payment is truly done, look it up and check that it shows up in a validated ledger. Sources: Transaction Cost, Finality of Results.

Sign → queue → settled

Four stages from signing to a validated ledger; sent is not settled.

  1. Sign & submit
  2. Wait / queue
  3. Included
  4. Settled

Step 1First, your wallet signs the transaction and submits it to a server.

Read all steps
  1. Sign & submit: First, your wallet signs the transaction and submits it to a server.
  2. Wait / queue: Second, the server checks it and shares it with others, and it waits.
  3. Included: Third, the network includes it in a block or ledger version.
  4. Settled: Fourth, that version is confirmed or validated. Only after that last stage is the payment settled.

Picture it

Airport security line before the flight is boarded = waiting room (mempool / queue). Boarded and departed = included in a ledger version.

Watch out

“Your transfer is stuck — paste your seed and we will push it.” Check a block explorer / ledger first. Never paste a seed.