#fees

Live on-chain network statistics, mempool conditions and market data across the major UTXO blockchains and Ethereum, sourced from Blockchair. For any supported chain read the full network state — best block height, total and 24-hour block and transaction counts, mining difficulty, hashrate, coin circulation, on-chain transfer volume and chain size — or zoom into the mempool to see pending transactions, mempool size, transactions-per-second, the suggested fee per byte (or median gas price on Ethereum) and average and median transaction fees in native units and USD, or pull market data with the coin price in USD and BTC, 24-hour change, market capitalisation and dominance. Ten chains are covered: Bitcoin, Bitcoin Cash, Litecoin, Dogecoin, Dash, Zcash, Bitcoin SV, eCash, Groestlcoin and Ethereum. Distinct from single-chain mempool and gas feeds: this is one consistent multi-chain stats surface.

api.oanor.com/blockchair-api

Litecoin's fee market, difficulty cycle and mining-pool distribution, live from the public Litecoin Space API (a mempool.space instance) — no key, nothing cached. The existing Litecoin reader covers addresses, transactions and blocks; this opens the network-economics layer it does not. Read the recommended fee rates in litoshi per virtual byte — from next-block down to economy and the relay minimum — together with the live mempool backlog. Read the difficulty adjustment: how far through the current 2016-block retarget window the chain is, the projected difficulty change, the estimated retarget date and the blocks remaining. And read the mining-pool distribution over the last week — which pools are finding Litecoin blocks, how many, their share and the network's estimated hashrate (Litecoin is mined with Scrypt, often merge-mined with Dogecoin). The fee-and-mining layer for Litecoin wallets, miners, fee estimators and analytics. Live from litecoinspace.org.

api.oanor.com/litecoinfees-api

Live data on the fees users pay to DeFi protocols and the revenue those protocols actually keep — the "which protocols earn money" view, a different layer from Total Value Locked. TVL is what is deposited; fees are what users pay to use a protocol; revenue is the slice the protocol or its token-holders retain. Powered by the public DeFiLlama fees feed, no key, nothing stored. The overview endpoint returns the whole-DeFi fee (or revenue) total for the last 24 hours, 7 days and 30 days plus every protocol ranked by what it earns, with its category and chains. The protocol endpoint returns a single protocol's fee and revenue figures side by side across 24h / 7d / 30d / all-time (e.g. Aave, Uniswap, Lido). The chain endpoint returns the fee or revenue total and top-earning protocols for one blockchain (Ethereum, Solana, Base). Switch any list between gross fees and retained revenue with a single metric parameter. This is the fees-and-revenue cut of DeFi — distinct from the TVL, DEX-volume, exchange-ticker and coin-markets APIs in the catalogue.

api.oanor.com/defifees-api

Live crypto protocol fee and revenue data across the whole ecosystem as an API, streamed from the DefiLlama fees feed. For thousands of protocols and chains: the fees paid by users over the last 24 hours, 7 days and 30 days, the all-time total, and the day/week/month change. Rank the protocols actually earning the most — a fundamental "who makes money" view of crypto — drill into any single protocol, read the market-wide fee total, or search. Built for crypto, fundamental-analysis and dashboard apps. Live, no key. Distinct from TVL, yield, stablecoin-supply and price APIs — this is the fee and revenue surface.

api.oanor.com/cryptofees-api

Live Bitcoin on-chain and mempool data as an API, built on the open mempool.space dataset — a different layer from market-price feeds. Get recommended transaction fees (sat/vB) for fast, half-hour, hour and economy confirmation, the current mempool state with its fee histogram, the most recent blocks and full block detail by height or hash (size, weight, transaction count, mining pool, reward and fees). Look up any Bitcoin address for its confirmed and unconfirmed balance and transaction counts, or any transaction by id for its inputs, outputs, fee and confirmation status. Track the difficulty-adjustment countdown, mining-pool hashrate share, the network hashrate over time and the current BTC price. Real on-chain data, no key needed upstream. Ideal for wallets, block explorers, fee estimators, mining dashboards and crypto analytics.

api.oanor.com/mempool-api