Delay-Tolerant Networking isn't a new idea. It's been running in space for almost a decade. What's new is making it work on Earth, on consumer devices, inside an adaptive, quantum-safe stack.
Traditional TCP/IP assumes you have a continuous path from source to destination. If that path breaks, even for a second, the connection dies and your app has to restart it. DTN takes the opposite assumption: the path is almost never continuous, so data should be self-contained, survive disconnection, and be moved forward whenever a next hop becomes available.
Instead of packets, DTN uses "bundles": encrypted, self-describing units that can wait on disk, hop between intermediaries, and reach the destination even if no single end-to-end path ever exists. This is how the Mars rovers talk to Earth. This is how the International Space Station downloads telemetry.
This is also, it turns out, exactly what your phone needs when it drops off LTE in a tunnel, when a cable gets cut, or when a regime flips the internet kill switch.
First operational DTN node installed on the International Space Station. Used for science data downlink and commanding.
Upgraded hardware, higher throughput, and integration with commercial ground stations.
NASA's PACE satellite uses DTN for all science data return. 34 million bundles moved in the first year with 100% delivery success.
NASA and ESA publish a joint standard for lunar communications using DTN Bundle Protocol v7 as the baseline. Every future lunar mission is expected to comply.
Human lunar flyby launched with DTN embedded in its comms stack alongside the Deep Space Network and Near Space Network.
Most DTN implementations live in research labs, ground station racks, or spacecraft. Akca's Wormtocol stack runs Bundle Protocol v7 on phones, laptops, routers, and consumer VPN clients. The same encoding, the same store-carry-forward logic, the same fault tolerance, in your pocket.
Every bundle is wrapped in a three-family hybrid encryption: X25519 + ML-KEM-1024 (NIST FIPS 203) + Classic McEliece. This is the first DTN implementation we're aware of that ships with post-quantum cryptography as a default, not an option.
AkcaFlowEngine sits above the bundle layer and chooses, per region, per user, per time of day, which transport to use, which CLA to prefer, and which fallback path to keep warm. Bundles are the what. FlowEngine is the how.
Whitepaper available on request.