Outer Enum

How to use the slides - Full screen (new tab) Slides Content --- title: FRAME Pallets & Traits description: A review of common Pallets & Traits. duration: 1 hour ---

FRAME Pallets & Traits

Overview

We will walk through the codebase and touch on various commonly used pallets and traits.

The goal is to learn by example, and show how you can use the Substrate codebase to self-educate and solve problems.

System Pallet

Utility Pallet

Proxy Pallet

Multisig Pallet

Held vs Frozen Balance

Reserved -> Held
Locked -> Frozen
Both states belong to the user... but cannot be spent / transferred.
Held balances stack on top of one another.
- Useful for user deposits, or other use cases where there is sybil concerns.
- Ex: Deposit for storing data on-chain,
Frozen balances can overlap each other.
- Useful when you want to use the same tokens for multiple use cases.
- Ex: Using the same tokens for both staking and voting in governance.

Held Balances

  Total Balance
┌─────────────────────────────────────────────────────────┐
┌────────────────────────────────┼────────────────────────┐
│┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼                     |ED│
└────────────────────────────────┼────────────────────────┘
   Held Balance                      Transferable Balance

┌───────────┐
│┼┼┼┼┼┼┼┼┼┼┼│  Various Storage Deposits
└───────────┤
            ├──────┐
            │┼┼┼┼┼┼│  Treasury Proposal Deposit
            └──────┤
                   ├──────────┐
                   │┼┼┼┼┼┼┼┼┼┼│  Multisig Deposit
                   └──────────┤
                              ├──┐
                              │┼┼│  Proxy Deposit
                              └──┘

New Holds Example

  Total Balance
┌─────────────────────────────────────────────────────────┐
┌────────────────────────────────┼────────────────────────┐
│┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼                     |ED│
└────────────────────────────────┼────────────────────────┘
   Held Balance                      Transferable Balance


                                     ┌────────────────────┐
              New Hold Successful!   │┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼│
                                     └────────────────────┘

                         ┌────────────────────────────────┐
    New Hold Failed :(   │┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼│
                         └────────────────────────────────┘

Frozen Balances

  Total Balance
┌─────────────────────────────────────────────────────────┐
┌────────────────────────────────┼────────────────────────┐
│XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                     |ED│
└────────────────────────────────┼────────────────────────┘
   Frozen Balance                    Transferable Balance

┌───────────────────────┐
│XXXXXXXXXXXXXXXXXXXXXXX│  Vesting Balance
└───────────────────────┘

┌────────────────────────────────┐
│XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX│  Staking Bond Freeze
└────────────────────────────────┘

┌─────────────────┐
│XXXXXXXXXXXXXXXXX│  Governance Vote Freeze
└─────────────────┘

New Freeze Example

  Total Balance
┌─────────────────────────────────────────────────┐
┌────────────────────────────────┼────────────────┐
│XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX             |ED│
└────────────────────────────────┼────────────────┘
   Frozen Balance                    Transferable Balance

┌───────────────────────┐
│XXXXXXXXXXXXXXXXXXXXXXX│  New Freeze Successful!
└───────────────────────┘

┌─────────────────────────────────────────────────┐
│XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX│  New Freeze Successful!
└─────────────────────────────────────────────────┘

┌─────────────────────────────────────────────────────────┐
│XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX│  New Freeze Successful!
└─────────────────────────────────────────────────────────┘

Freeze and Hold Overlap

  Total Balance
┌──────────────────────────────────────────────────────────────┐
   Held Balance
┌────────────────────────────────┼─────────────────────────────┐
│┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼┼                                | E │
│XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                         | D │
└────────────────────────────────┼─────────────────────────────┘
   Frozen Balance                    Transferable Balance