Electrum Server in Rust
An efficient re-implementation of Electrum Server, inspired by ElectrumX and Electrum Personal Server.
The motivation behind this project is to enable a user to run his own Electrum server, with required hardware resources not much beyond those of a full node. The server indexes the entire Bitcoin blockchain, and the resulting index enables fast queries for any given user wallet, allowing the user to keep real-time track of his balances and his transaction history using the Electrum wallet. Since it runs on the user's own machine, there is no need for the wallet to communicate with external Electrum servers, thus preserving the privacy of the user's addresses and balances.
Features
- Supports Electrum protocol v1.2
- Maintains an index over transaction inputs and outputs, allowing fast balance queries
- Fast synchronization of the Bitcoin blockchain (~2.5 hours for ~185GB @ June 2018) on modest hardware
- Low index storage overhead (~20%), relying on a local full node for transaction retrieval
- Efficient mempool tracker (allowing better fee estimation)
- Low CPU & memory usage (after initial indexing)
txindex
is not required for the Bitcoin node- Uses a single RocksDB database, for better consistency and crash recovery
Usage
Install latest Rust (1.26+) and latest Bitcoin Core (0.16+).
# Allow Bitcoin daemon to sync before starting Electrum server
# First build should take ~20 minutes
# First index sync should take ~2.5 hours
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# The index database is stored here:
# Connect only to the local server, for better privacy
Monitoring
Indexing and serving metrics are exported via Prometheus:
|
Index database
The database schema is described here.