This guide will walk you through migrating from Mempool.space to Maestro’s Esplora API service. Maestro provides an Esplora-compatible REST API for querying Bitcoin data: addresses, transactions, blocks, and the mempool. This enables users currently relying on Mempool.space for their Bitcoin data to utilize Maestro as their provider and enjoy significant savings with minimal switching cost. Transitioning from Mempool.space involves mapping endpoints to their Maestro counterparts and adjusting the URL and request structures accordingly.

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About Esplora

Esplora is a block explorer and RESTful API framework developed and maintained by Blockstream. The service offers a lightweight, high-performance interface for querying Bitcoin blockchain data including blocks, transactions, addresses, and the mempool.

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Prerequisites

  1. Obtain a Maestro API key.
  2. Review Bitcoin API documentation.

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Base URL

NetworkMempool.spaceMaestro
Mainnethttps://mempool.space/apihttps://xbt-mainnet.gomaestro-api.org/v0/esplora
Testnet4https://mempool.space/testnet4/apihttps://xbt-testnet.gomaestro-api.org/v0/esplora

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Headers

Mempool.spaceMaestro
-api-key

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Examples

# Maestro
curl -sSL "https://xbt-mainnet.gomaestro-api.org/v0/esplora/address/bc1qcx7ys0ahvtfqcc63sfn6axls0qrhkadnslpd94" \
--header 'Accept: application/json' \
--header 'api-key: <MAESTRO_API Key>'

# Mempool.space
curl -sSL "https://mempool.space/api/address/bc1qcx7ys0ahvtfqcc63sfn6axls0qrhkadnslpd94"

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Supported Areas

Maestro’s Esplora-compatible API supports:
ServiceSupported
Addresses✓
Blocks✓
General-
Mining-
Fees-
Mempool✓
Transactions✓
Lightning-
Accelerator (Public)-
Accelerator (Authenticated)-

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Address

Mempool.spaceMaestro
/api/address/:address/address/:address
/api/address/:address/txs/address/:address/txs
/api/address/:address/txs/chain/address/:address/txs/chain
/api/address/:address/txs/mempool/address/:address/txs/mempool
/api/address/:address/utxo/address/:address/utxo

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Block

Mempool.spaceMaestro
/api/block/:hash/block/:hash
/api/block/:hash/header/block/:hash/:header
/api/block/:hash/status/block/:hash/status
/api/block/:hash/txs[/:start_index]/block/:hash/txs/:start_index
/api/block/:hash/txids/block/:hash/txids
/api/block/:hash/txid/:index/block/:hash/txid/:index
/api/block/:hash/raw/block/:hash/raw
/api/blocks[/:start_height]/blocks/:start_height
/api/block-height/:height/block-height/:height
/api/blocks/tip/height/blocks/tip/height
/api/blocks/tip/hash/bocks/tip/hash

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Mempool

Mempool.spaceMaestro
/api/mempool/mempool
/api/mempool/txids/mempool/txids
/api/mempool/recent/mempool/recent

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Transaction

Mempool.spaceMaestro
/api/tx/:txid/merkeblock-proof/tx/:txid/merkleblock-proof
/api/tx/:txid/merkle-proof/tx/:txid/merkle-proof
/api/tx/:txid/outspend/:vout/tx/:txid/outspend/:vout
/api/tx/:txid/outspends/tx/:txid/outspends
/api/tx/:txid/raw/tx/:txid/raw
/api/tx/:txid/rbf/tx/:txid/rbf
/api/tx/:txid/status/tx/:txid/status
/api/tx/:txid/tx/:txid
/api/tx/:txid/hex/tx/:txid/hex
/api/tx (POST)/tx (POST)

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Key Differences

  • Maestro is focused on Bitcoin mainnet/testnet4 data; no Liquid or Lightning support
  • Maestro returns identical JSON structures to Esplora spec, making migration straightward
  • Some endpoints such as stats, mining/pools, or prices must be implemented elsewhere if needed

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🎉 You’re Done!

You now have walked through a guide on how to migrate from Mempool.space to Maestro as your de-facto on-chain data provider.

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Additional Resources

Be sure to review Maestro’s rate limits and pricing tiers to select the plan that best fits your application’s needs.
SupportIf you are experiencing any trouble with the above, reach out on Discord.