Mempool.space Bitcoin Blockchain Scraper

Extract Bitcoin blockchain data from Mempool.space — the leading open-source Bitcoin explorer. No API key or authentication required. Retrieve address balances, full transaction histories, block details, real-time mempool statistics, mining hashrate, fee estimates, and historical BTC price data.

What can this scraper do?

• Address balance & stats — confirmed balance, transaction count, funded/spent satoshis, unconfirmed mempool activity
• Transaction history — paginated list of all transactions for any Bitcoin address (legacy, P2SH, Bech32)
• Transaction details — inputs, outputs, fees, size, weight, confirmation status for any txid
• Block details — full metadata for any block by hash or height: timestamp, tx count, size, weight, miner pool, fees, difficulty
• Recent blocks — live feed of the most recently mined Bitcoin blocks
• Mempool statistics — current mempool size, vsize, fee histogram, and all fee tiers (fastest, half-hour, hour, economy, minimum)
• Mining stats — hashrate history over configurable intervals + next difficulty adjustment estimate
• Historical BTC price — full daily price series in USD, EUR, GBP, CAD, CHF, AUD, or JPY

Input

Field	Type	Description
mode	select	What to fetch. See modes below.
addresses	string[]	Bitcoin addresses (modes: addressInfo, addressTransactions)
txids	string[]	Transaction IDs — 64-char hex (mode: transactionInfo)
blockIdentifiers	string[]	Block hashes or heights (mode: blockInfo)
currency	select	Fiat currency for price history: USD, EUR, GBP, CAD, CHF, AUD, JPY
hashrateInterval	select	Hashrate history window: 1m, 3m, 6m, 1y, 2y, 3y, all
maxItems	integer	Max records to emit (1–500, default 50)

Modes

Mode	Description	Required input
mempoolStats	Mempool state + fee estimates	None
addressInfo	Address balance and chain stats	addresses
addressTransactions	Full transaction history for addresses	addresses
transactionInfo	Transaction details by txid	txids
blockInfo	Block metadata by hash or height	blockIdentifiers
recentBlocks	List of recently mined blocks	None
miningStats	Hashrate history + difficulty adjustment	None
priceHistory	Historical daily BTC price	None

Output

Output schema varies by mode. All records include a scrapedAt ISO timestamp.

mempoolStats

{
  "count": 12453,
  "vsize": 8241563,
  "totalFeesSats": 18394210,
  "fastestFeeSatPerVbyte": 45,
  "halfHourFeeSatPerVbyte": 32,
  "hourFeeSatPerVbyte": 25,
  "economyFeeSatPerVbyte": 12,
  "minimumFeeSatPerVbyte": 1,
  "scrapedAt": "2024-11-01T12:00:00+00:00"
}

addressInfo

{
  "address": "bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh",
  "balanceSats": 2108034,
  "balanceBtc": 0.02108034,
  "fundedSats": 125000000,
  "spentSats": 122891966,
  "txCount": 482,
  "fundedTxoCount": 95,
  "spentTxoCount": 89,
  "scrapedAt": "2024-11-01T12:00:00+00:00"
}

transactionInfo / addressTransactions

{
  "txid": "4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b",
  "confirmed": true,
  "blockHeight": 170,
  "blockTime": "2009-01-12T03:30:25+00:00",
  "inputCount": 1,
  "outputCount": 2,
  "valueOutSats": 5000000000,
  "valueOutBtc": 50.0,
  "feeSats": 0,
  "weight": 748,
  "scrapedAt": "2024-11-01T12:00:00+00:00"
}

blockInfo / recentBlocks

{
  "blockHash": "000000000000000000041db24e9a4d2bfbc0b6dea7e3a4ce7a1a1e9b7c2e1f3",
  "height": 860000,
  "timestamp": "2024-10-28T14:23:11+00:00",
  "txCount": 3121,
  "size": 1523889,
  "weight": 3993572,
  "difficulty": 95672703580713.0,
  "extras": {
    "rewardBtc": 3.125,
    "totalFeesBtc": 0.08241983,
    "poolName": "Foundry USA",
    "medianFee": 8,
    "avgFeeRate": 12
  },
  "scrapedAt": "2024-11-01T12:00:00+00:00"
}

miningStats

{
  "currentHashrateThPerSecond": 6.82e+20,
  "currentDifficulty": 95672703580713.0,
  "difficultyChange": 3.51,
  "estimatedRetargetDate": "2024-11-09T08:00:00+00:00",
  "remainingBlocks": 1203,
  "nextRetargetHeight": 861120,
  "scrapedAt": "2024-11-01T12:00:00+00:00"
}

priceHistory

{
  "timestamp": "2024-11-01T00:00:00+00:00",
  "currency": "USD",
  "price": 69420.0,
  "scrapedAt": "2024-11-01T12:00:00+00:00"
}

Frequently Asked Questions

Does this require an API key or account? No. Mempool.space provides a fully public REST API with no authentication required.

Does this work for testnet? This actor targets mainnet (mempool.space). Testnet support is not included.

How far back does the price history go? The Mempool.space historical price endpoint covers Bitcoin's full history since 2010.

What Bitcoin address formats are supported? Legacy (P2PKH, starting with 1), P2SH (starting with 3), Bech32 (native SegWit, starting with bc1q), and Bech32m (Taproot, starting with bc1p).

How are large transaction histories handled? The actor paginates automatically using the after_txid cursor so all transactions are retrieved regardless of count (up to maxItems).

What is the mempoolStats mode useful for? Real-time fee estimation for Bitcoin transactions. Useful for wallets, exchanges, and analytics dashboards.

Is historical price data available for all currencies? Yes — USD, EUR, GBP, CAD, CHF, AUD, and JPY are supported.

Data Source

Data is sourced from the public Mempool.space API — an open-source Bitcoin explorer and mempool visualizer maintained by the Bitcoin community.