Why is my transaction stuck?

Low fee or network congestion. On Ergo, fees are predictable so stuck transactions are rare. Wait or resubmit with higher fee.

How long do transactions stay in mempool?

Typically until mined or expired. Ergo transactions have a limited validity period based on block height.

General

Intermediate

What is

Mempool?

The waiting area for unconfirmed transactions before they're included in a block.

The mempool (memory pool) holds valid transactions waiting for block inclusion. Miners select transactions from the mempool, typically prioritizing higher fees. On Ergo, the eUTXO model means transactions reference specific boxes, reducing mempool complexity and preventing certain MEV attacks.

Key Points

Holds pending transactions
Miners select from mempool
Higher fees = faster inclusion
Each node has its own mempool
Transactions expire if not mined
eUTXO reduces mempool conflicts

Related Infographics

MEV-Resistance vs the 'Dark Forest'

How global DeFi 'dark forest' mempools compare to Ergo's MEV-aware eUTXO local ordering for front-running, value capture, UX and mitigation.

PoW vs PoS: Censorship & Attack Surface

How PoW, classic PoS and validator committees differ in censorship power, cartel risk, regulatory pressure and user resistance tools.

eUTXO vs Accounts vs Classic UTXO

How classic UTXO, global accounts and Ergo's eUTXO differ in parallelism, logic transparency, smart-contract design and fee predictability.

Autolykos: Mining Without Masters

How Ergo's Autolykos PoW keeps mining open to consumer GPUs, limits pool dominance and funds long-term security with block rewards plus storage rent.

Babel Fees: Pay Ergo Transaction Fees in Any Token

Ergo's Babel Fees turn gas payments into an on-chain market, letting users pay transaction fees in almost any token while miners still receive ERG.

Autolykos: Ergo's Sustainable GPU Mining Algorithm

Autolykos is the Ergo mining algorithm: a memory-hard proof-of-work designed for ASIC-resistant mining, sustainable PoW, and a more decentralised, GPU-friendly Ergo blockchain.

Frequently Asked Questions

Questions about Mempool

Common questions about this topic

How do miners earn money on Ergo?

Ergo miners earn from three sources: block rewards (newly minted ERG), transaction fees, and storage rent. Block rewards decrease over time according to the emission schedule, but storage rent ensures long-term income even after all ERG is mined. Most miners use pools for consistent payouts.

How-to

Mining

How to provide liquidity on Ergo?

On Spectrum Finance, select a pool, deposit equal value of both tokens, and receive LP tokens representing your share. You earn a portion of all trading fees. Withdraw anytime by returning LP tokens. Be aware of impermanent loss if token prices diverge significantly.

How-to

DeFi

How to get started with Ergo?

Start by getting a wallet (Nautilus for browser, Terminus for mobile). Back up your seed phrase securely offline. Get some ERG from an exchange (Gate.io, KuCoin) or DEX (Spectrum). Make a test transaction. Then explore: try DeFi on Spectrum, check out NFTs, or dive into the technology if you're a builder.

How-to

Getting Started

Is Ergo mining profitable in 2025?

Ergo mining profitability depends on your electricity cost, GPU efficiency, and ERG price. Use mining calculators with your specific hardware and power costs. Ergo is one of the most profitable GPU-mineable coins due to Autolykos being ASIC-resistant. Profitability improves significantly with cheap electricity.

Explainer

Mining

View all questions

Explore More Terms

CBDC Blockchain Decentralization Wallet Seed Phrase Merkle Tree

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Key Points