Bitcoin Forum

I have been working on a protocol for stateless nodes. It is a simplified version of Utreexo. It does not require dedicated bridge nodes - only regular nodes serving regular blocks. Furthermore, nano nodes can serve each other. The protocol works on top of today's bitcoin. No consensus changes are required. All data structures emerge from the existing blockchain structure.

If there is at least one honest node available, the protocol provides full node security by downloading just about 150 MB.

Here is a straw-man proposal demonstrating the basic idea. (https://github.com/coins/research/blob/master/notes/nano-network-strawman.md)

The detailed description can be found here. (https://github.com/coins/research/blob/master/bitcoin-nano-network.md)

Feedback is very welcome. Thanks for taking your time!

You might want to call your effort something else, there is a sketchy altcoin called nano which also promotes its low resource costs (IIRC because it just doesn't validate chain history...), so it might be easily confused. :)