Light Wallet: Compute deterministic Cardano UTxO/transactions set PoC

[jpraynaud]

Why

In order to sign the UTxO (or transaction history) of the Cardano chain with Mithril, we need to retrieve this information deterministically.

What

One possible way of doing this is to read these data directly from the immutable files of the Cardano node database. We want to explore this possibility as this looks like the easiest way to get access to this information in a deterministic fashion today. We will implement a PoC which goal is to demonstrates that we can compute a deterministic set of transactions this way.

This process should probably take place in the ChainObserver.

How

• Read the raw blocks from the Cardano immutable files
• Parse the raw blocks (e.g. with codec from pallas)
• Compute a deterministic set of transactions from these data

[jpraynaud]

The PoC is available on the branch: jpraynaud/1283-gather-blocks-tx-from-immutable

This README file explains how to run the prototype.