Monero Transaction Builder Server
A Monero tx-builder server runs monero-wallet-rpc in a mode that constructs unsigned transactions for offline signing. Combined with an air-gapped cold wallet, this is the safest pattern for high-value XMR operations. AnubizHost hosts tx-builder backends from $140/mo with NVMe storage and Tor support.
Need this done for your project?
We implement, you ship. Async, documented, done in days.
Cold Signing Flow
Hot side: monerod + monero-wallet-rpc with view key only. Constructs unsigned transactions. Cold side: air-gapped wallet with spend key. Signs transactions exported from hot side via QR code or SD card. Result: spend key never touches the network.
Why You Need a Hosted Hot Side
Cold signing requires a fully-synced view-only wallet on the hot side to construct accurate unsigned transactions. Hosting this in our infrastructure means you get always-on view-only operation without leaving your spend key online.
Tor RPC for Wallet Software
monero-wallet-rpc can be reached over Tor for additional privacy. Your cold-signing wallet (Feather, Monero GUI) connects via Tor to your hosted tx-builder. The link between your IP and your wallet is hidden.
Buy
$140/mo. See view-only basics, overview.
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Why Anubiz Host
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Skip the research. Tell us what you need, and we'll scope it, implement it, and hand it back — fully documented and production-ready.