Bitcoin mempool and difficulty
Unconfirmed transactions waiting in the mempool, and the next mining difficulty adjustment.
Unconfirmed transactions waiting in the mempool, and the next mining difficulty adjustment.
- Pending transactions
- 72,900
- Mempool size
- 39.72MvB
- Next adjustment
- -3.46 %
- Blocks to go
- 1,253
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How to read the chart
The mempool is the waiting room for Bitcoin transactions: every transfer lands there until a miner includes it in a block. Because a block has limited space, miners pick the transactions with the highest fees first. Many waiting transactions therefore mean: if you want a fast confirmation, you have to pay more.
The difficulty adjustment shows whether blocks are currently found faster or slower than every ten minutes. A positive value means that computing power has risen since the last adjustment. The numbers come from mempool.space and are fetched again every five minutes.
How this number is produced
The number of unconfirmed transactions waiting in the mempool and their data volume, plus the next difficulty adjustment and the number of blocks until it.
What it does not say
Every node keeps its own mempool; these figures come from one provider’s nodes and may differ elsewhere. A full mempool means high fees, not that the network is malfunctioning.
- Source
- mempool.space
- Update interval
- 5 min
- CC BY 4.0
- CC BY 4.0
Frequently asked questions
What is the Bitcoin mempool?
The memory in which nodes of the Bitcoin network hold unconfirmed transactions until a miner includes them in a block. Every node keeps its own mempool, but their contents are very similar. The chart shows the number of waiting transactions and their data size.
Why is my Bitcoin transaction taking so long?
Usually the fee offered is too low for the current queue. Miners take the transactions with the highest fee per virtual byte first. Many wallets allow you to replace a stuck transaction with one paying a higher fee, or to speed it up with a follow-up transaction.
When is the next difficulty adjustment?
Every 2,016 blocks, roughly every two weeks. The chart shows how many blocks are left until then and by how many percent difficulty will change based on the current pace. The estimate becomes more precise with every block until the adjustment.
If you want to buy or sell based on these numbers, you can compare the fees and regulation of providers here: Crypto exchanges compared