I would like to assist with this; is there a GitHub repo for this idea that includes the contract and off-chain code that maintains the branches of tx?
We are working towards a PoC for non-fungible tokens at:
- GitHub - barryWhiteHat/roll_up: scale ethereum with snarks
- https://gitter.im/barrywhitehat/roll_up
- High-level Overview - HackMD
- Plasma snapp - fully verified plasma chain - #29 by josojo
- GitHub - snario/zknifty: 🎴Zero-knowledge non-fungible tokens on Ethereum using zk-SNARKs
But, there is a lot of interest in making it work with accounts and balances, although that comes with many more edge cases and complexities compared to non-fungible tokens. At the moment the aim seems to be ‘keep it simple, and deliverable’.