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Satellite based Cryptographic Layer - Extra-terrestial Extension to Ethereum | Devcon SEA

DevconThu, Oct 9, 2025, 12:00 AM

Using nano-satellites with edge compute units we will show how we intend to build an orbital compute layer with unique properties. We will propose a novel cryptographic applications layer built with vision to space explorations. Typically public blockchains enable cryptographic primitives for the digital commons on earth, we will share novel implementation of cryptographic applications that will extend the digital commons into Low Earth Orbit (LEO) and import cryptographic resources from LEO. Speaker(s): Daniel Bar, Matej Yangwao Skill level: Intermediate Track: Cypherpunk & Privacy Keywords: Network State, Use cases of cryptography, DePIN, space, frontier Follow us: https://twitter.com/efdevcon, https://twitter.com/ethereum, https://warpcast.com/devcon Learn more about devcon: https://www.devcon.org/ Learn more about ethereum: https://ethereum.org/ Visit the https://archive.devcon.org/ to gain access to the entire library of Devcon talks with the ease of filtering, playlists, personalized suggestions, decentralized access on Swarm, IPFS and more. Devcon is the Ethereum conference for developers, researchers, thinkers, and makers. Devcon SEA was held in Bangkok, Thailand on Nov 12 - Nov 15, 2024. Devcon is organized and presented by the Ethereum Foundation. To find out more, please visit https://ethereum.foundation/

Transcript

[Music] hello earthlings so um ethereum is great we want to take it to more planets than only Earth and when we think about space Frontier often nerds think about the space Frontier as some sci-fi or alien Tech Technologies or for some other people it's just an empty void which is slightly less inspiring the reality is that if anything of value is going to come out of it we need to get nuanced and work with the complexities so what we have seen is that in the last two years alone more satellites has been launched into orbit than in the previous five decades combined so after finally after after Decades of stagnation we're entering a space acceleration era and this is the time where democra democratization of the space industry is happening and plenty of startups with wild ideas are finally taking a stab at implementing their stuff with spacecoin what we're building is orbital roote of trust it's literally out of this world secure Hardware Out Of Reach of physical attacks it's space-based trusted execution environment or we call it space te and this serves as infrastructure for Celestial compute Marketplace payment layer for satellite services and from Earth we'll be able to access it via RPC nodes for evm and other networks this this is a real photo from uh a launch not long ago what we've built with the space te is infrastructure for the with our Aerospace partner cryptos sat we basically designed build and launched satellites into orbit since 2021 um last year we contributed to the EIP 4844 with the trusted setup ceremony the kzg and aboard the satellites and the latest satellites are equipped with the idium connection which is reachable from any place in the planet and now we're preparing a set of uh nodes that will be equipped with more idium antennas C Edge nodes um where was it yeah and and essentially this is immune to any kind of attacks there um the the architecture is uh Yang W session okay thank you for Mike thank slides so this is actually what you see is like the the network architecture which actually is like Network resilient so we are using the Iridium satellites which have like the 66 pieces distributed across the planet with is the nine in the backup so that's like the the first line of the our communication path we are using then we are using the upos orbital which is like the provide as the computation infrastructure currently and thanks to this actually we are building the space coin on the top so what actually we can uh build on thanks to this is actually like the some kind of protocol with specific Hardware capabilities and it will be like resistant to any kind of the DDOS attacks and the censorships and in the future we believe there will be like much more lot of communication the paths we can use and the computational capacity we can get so this is basically like a brief diagram where actually the satellites are reachable any single moment so you can see like in any kind of the intervals uh some satellites are actually reachable where actually the ground stations are the proposing and then actually the electing and the voting back and the broadcasting back on the ground stations so what we are using this because there's a lot of constraints in the environment is actually we used the modified Hot Stuff one with the instant finality and thanks to this we actually we retrofitted for our lower bandwidth with the least amount of the messages needed between the satellites so and this actually open as the requirement like we just need for the connectivity only one node designed it as the the leader so this is briefly like the diagram so how actually will be like working in the future and what we are looking forward to implement currently so we have like the pre finality on the L2 with the pre finality with L2 as with the L1 backup whereas the the state is posted on the L1 which is actually good for the low value transactions and for full finality we'll be using the L1 where actually it's good for the high value uh transaction and actually the state will be fully committed to the L1 on the satellites so for the security services thanks to this we can like offer like the space t the co-processors which enable cases for that actually we are looking forward to offer like the secure custodian for the various Key Management uh systems and schemes then actually we're looking for the cosmic entropy and the vrf and thanks to this actually we can offer some kind of the secure delation because like the hardware is like inacessible for the inspection and the Eternal bulletin board so what we actually looking forward up there is that we'll be implementing the the support the evm compatibility and we'll be looking forward to the initial deployment focusing on the the bridge contracts and for future extensibility through the DM risk and the VM based stuff so we are looking like for the L1 L2 foundations NPC wallets and the validators and especially enthropy providers as well so thank you for the attention please give us the follow on the Twitter and I think now it's time for the questions thank you it is it is man peace among worlds so we have any questions remember to stand up your hand and I will TOS this to you yeah you can have any kind of the questions we can ask some Physics there's there oh we'll be delivered to you don't worry it doesn't break uh so this is fascinating to see so like you know hats off like for building it what happens is is it harder to patch because it's in satellites like you know in on Earth I guess you could upgrade the hardware or like you know switch over to a different operating system like you know if there's a vulnerability in the OS that's running on your satellite I imagine that's a lot harder to go and fix so how do those challenges come in and the second one was what happens if one of the satellites fails and can you still maintain connection between your L1 nodes so so there's redundancy right you have actually on each of the units you have two Linux like hardened Linux machines and then eventually both you have the redundancy in case one satellites goes off um but with regard to patching ignoring for a moment the Hardware related stuff which is a longer conversation but for software we're actually looking at potentially implementing some kind of committee uh sign off so essentially you have it both P vetted and also it's not just like a centralized entity that patches and pushes potentially uh man in the middle you know unnecessary things um if I understand correctly from your slide is that you use IR radiums satellite correct okay um I understand uh uh Space X has a lot of uh low orbital satellite uh but why do you choose the radiums over space app okay yeah so for currently like the idium is like this like it's most oldest but it's actually most reable you can get right now it's also expensive but it's actually thanks to it where is actually in the constellation is actually quite have a long sustainability of the networks but yes the styling and other providers they're actually coming in the puff so we believe is actually in the market of optical Terminals and but we just wait the satellites being up and ready so now Starling G will offer for the satellite providers but it takes time to implement into orbit so once we'll be like more viable and of course cheaper option we will like switch to that or and have like the redundancy thank you okay any more questions yeah there's from last question thanks for the presentation uh what are some first use cases you envisage and what are some really moonshot or literally moonshot use cases that you can see potentially or what what could be the coolest use cases you can foresee it's a bit of a long uh story but I reckon just some of the use cases Cosmic Randomness for vrf secure deletion um MPC application with co-signing secure Crow processing these are the things that are applicable already today um what's maybe moonshot and very interesting is as we showed the there's so many launches now there's like an entire new space like space native economy right so we foresee a scenario where there's going to be AI agents in space making decisions without having to download um data to Earth So eventually like there's a lot of security that is required for for this to happen like we've seen with the planet Labs how it influenced uh Security on Earth and with more assets in space it's becoming much more sensitive so we foresee it as you know at the backbone for expansion of ethereum into um more planets eventually or at least outside of pure bounds of Earth yeah I would like say the the moon cases is like the the payment Network between the satellites so yeah how is it all right please give a big Applause to these guys it's a wonderful presentation so

Automatic transcript — names and jargon may be misspelled.