This guide explains how to use pre-synced snapshots to quickly set up Maestro Symphony and Bitcoin Core, avoiding the time-consuming initial chain synchronization.

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Overview

Snapshots allow you to bootstrap your Symphony indexer with pre-synchronized data:
  • Bitcoin node snapshots: Pre-synced Bitcoin Core blockchain data
  • Symphony snapshots: Pre-indexed blockchain data and database state

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Prerequisites

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Available Snapshots

Networks supported:
  • mainnet
  • testnet4
  • regtest
Snapshots

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Bitcoin

Mainnet: https://snapshots.gomaestro.org/bitcoin-node/mainnet/snapshots/20250826.tar.lz4 Testnet: https://snapshots.gomaestro.org/bitcoin-node/testnet/snapshots/20250827.tar.lz4

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Symphony

Mainnet: https://snapshots.gomaestro.org/symphony/mainnet/snapshots/20250826.tar.lz4 Testnet: https://snapshots.gomaestro.org/symphony/testnet/snapshots/20250827.tar.lz4

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Testnet setup example

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1. Clone Repository and Prepare Directories

The following are to be excuted within maestro-symphony repo directory. First, let’s clone the Symphony repo: 
git clone https://github.com/maestro-org/maestro-symphony.git && cd maestro-symphony
Next, let’s create two new directories to house the snapshot data. 
mkdir -p ./tmp/{symphony-data,bitcoin-data}

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2. Download Snapshots

Bitcoin node snapshot: 
curl -L https://snapshots.gomaestro.org/bitcoin-node/testnet/snapshots/20250827.tar.lz4 | \
 lz4 -d | tar -xf - -C ./tmp/bitcoin-data
Symphony snapshot: 
curl -L https://snapshots.gomaestro.org/symphony/testnet/snapshots/20250827.tar.lz4 | \
  lz4 -d | tar -xf - -C ./tmp/symphony-data

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3. Start Services

make COMPOSE_FILE=docker-compose.yml compose-up

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Verification

Once the services are started, verify the setup:

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Check Symphony Status

curl http://localhost:8080/addresses/tb1qw508d6qejxtdg4y5r3zarvary0c5xw7kxpjzsx/utxos | jq '.indexer_info'

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Stop Services

When you are finished interacting with Symphony, be sure to stop the services as well. 
make compose-down

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Troubleshooting

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Disk Space

Ensure sufficient disk space:
  • Testnet: ~1GB for Symphony + ~50GB for Bitcoin node
  • Mainnet: ~24GB for Symphony + ~600GB for Bitcoin node

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Snapshot Age

If snapshots are older than expected:
  • Symphony will automatically sync missing blocks
  • Bitcoin Core will resume from snapshot point
  • Initial startup may take longer for older snapshots

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Updating Snapshots

Snapshots are updated regularly. To use a newer snapshot:
  1. Stop Docker services
  2. Backup any important data
  3. Remove old data directories
  4. Download and extract new snapshots
  5. Restart Docker services
Note: Ensure that no other bitcoin node containers are running as this may cause conflicts.

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🎉 You’re Done!

You have now walked through a guide on how to load both a Symphony and Bitcoin snapshot. Be sure to check out Maestro’s additional services for further assisting your development of building on Bitcoin.

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Support

For issues with snapshots: