Solana transactions when mobile internet is down.

A decentralized last-mile communication layer that moves signed Solana transactions through local mesh networks and relays them to RPC nodes.

Problem

Connectivity failures create direct financial losses.

When internet access fails, users lose the ability to move value, accept payments, execute transactions, or react to urgent financial events.

Sky Business research reports that UK SMEs affected by running out of mobile data lose over £3,400 per year on average, with 56% reporting lost sales, bookings, or opportunities.

Sky Group research

No signal should not mean no transaction.

Remote areas, disaster zones, fieldwork, festivals, outages, and censorship-resistant environments all need a way to broadcast value without relying on mobile internet.

Solution / How it Works

Signed locally. Carried by mesh. Broadcast through a relay.

Soltastic architecture flow

Demo / App

Real mesh devices moving transaction payloads.

Soltastic demo video preview

From wallet to Meshtastic to Solana

The demo shows the basic version: init request, balance request, Durable Nonce creation, SOL transaction metadata and signatures, relay reconstruction, RPC broadcast, and hash confirmation.

Features

Built for offline-first transaction delivery.

Privacy first

The server never receives private keys. All signing happens on the client.

Deferred execution

Durable Nonces let transactions live beyond the short blockhash window.

Double-spend protection

Advanced Nonce values change after use, preventing replayed spending.

Local mesh delivery

LoRa-based nodes provide the last-mile path when mobile data is absent.

Wallet compatible

Solana wallets can sign client-side without delegating assets to relayers.

Relay architecture

A server listens on the mesh channel and communicates with Solana RPC.

Tech Stack / Powered by

Purpose-built pieces, loosely coupled.

Solana
Durable Nonces
Meshtastic
LoRa
RPC Relay
Client-side signing

Roadmap

From basic transfers to richer offline transaction types.

  1. Basic version: init, balance, SOL transaction, RPC relay, tx hash.
  2. Connect Meshtastic nodes via serial and Wi-Fi.
  3. Support other tokens.
  4. Support memos.
  5. Support smart contract calls.
  6. Smart contract for server reward distribution.

Community & Social Proof

Follow the build and help shape the network.