This is a referendum whose proposer address (0x4b8c667590e6a28497ea4be5facb7e9869a64eae) is shown in on-chain info below. Only this user can edit this description and the title. If you own this account, login and tell us more about your proposal.

This project's goal is to create a new metadata protocol friendly to offline devices and implement it in the most critical tools available: Ledger and Kampela, as well as create tools to port it to other wallets and key management devices, including Polkadot Vault. This will involve changing the runtime code to support a new method of transaction signing that would include a proof of metadata used for transaction rendering to the user.

Set the new runtime code.

# <weight>
- `O(C + S)` where `C` length of `code` and `S` complexity of `can_set_code`
- 1 call to `can_set_code`: `O(S)` (calls `sp_io::misc::runtime_version` which is
  expensive).
- 1 storage write (codec `O(C)`).
- 1 digest item.
- 1 event.
The weight of this function is dependent on the runtime, but generally this is very
expensive. We will treat this as a full block.
# </weight>

Referendum #62

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