Substrate / Polkadot SDK

Memory model, abstractions, and the constraints of the restricted runtime environment.

• BAC-L1-SUB-101Beginner

  Rust I — ownership, borrowing, lifetimes

  The memory model that makes Rust suited to protocol engineering: what the compiler refuses, and why that refusal is a guarantee.

  Level

  L1

  Duration

  4 h

  Prerequisites

  1 prerequisites

• BAC-L1-SUB-102Intermediate

  Rust II — traits, generics, error handling

  The abstractions FRAME is built on end to end. Without them a pallet stays an unreadable wall of text.

  Level

  L1

  Duration

  4 h

  Prerequisites

  1 prerequisites

• BAC-L1-SUB-103Intermediate

  Rust for the constrained runtime environment

  A runtime compiles to WebAssembly: no standard library, no implicit allocation, no non-determinism. The rules change.

  Level

  L1

  Duration

  4 h

  Prerequisites

  1 prerequisites

Client/runtime architecture, chain specification, a local network that finalises.

• BAC-L2-SUB-104Intermediate

  Node architecture: client and runtime

  The Polkadot SDK's founding split: a native client handling networking and the database, a WebAssembly runtime defining the rules — replaceable without redeploying the client.

  Level

  L2

  Duration

  4 h

  Prerequisites

  2 prerequisites

• BAC-L2-SUB-105Intermediate

  First chain: specification and local network

  From template to running network: chain specification, genesis state, authority keys, multi-node network on a single machine.

  Level

  L2

  Duration

  4 h

  Prerequisites

  2 prerequisites

Storage, extrinsics, origins, events, hooks: the core of the craft.

• BAC-L2-SUB-106Intermediate

  Anatomy of a FRAME pallet

  The pallet as the unit of business logic: configuration, storage, calls, events, errors. The vocabulary for the rest of the track.

  Level

  L2

  Duration

  4 h

  Prerequisites

  1 prerequisites

• BAC-L2-SUB-107Advanced

  Designing on-chain storage

  Every byte stored is replicated by every node, forever. On-chain storage is designed as a scarce resource, not as a database.

  Level

  L2

  Duration

  4 h

  Prerequisites

  1 prerequisites

• BAC-L2-SUB-108Advanced

  Extrinsics, dispatch and origins

  How a transaction becomes a function call, and how the runtime decides who is allowed to trigger it.

  Level

  L2

  Duration

  4 h

  Prerequisites

  1 prerequisites

• BAC-L2-SUB-109Advanced

  Events, errors and block hooks

  What the chain tells the outside world, and what it executes automatically each block — the part of the runtime nobody triggers.

  Level

  L2

  Duration

  4 h

  Prerequisites

  1 prerequisites

Tests, cost measurement, runtime APIs, upgrades and state migrations.

• BAC-L2-SUB-110Advanced

  Testing runtime logic

  A runtime bug cannot be hot-fixed on a public chain. Testing is therefore not a good practice but a deployment condition.

  Level

  L2

  Duration

  4 h

  Prerequisites

  1 prerequisites

• BAC-L2-SUB-111Expert

  Benchmarking and weights

  A call whose cost is underestimated is a denial-of-service attack you priced yourself. Measure, do not estimate.

  Level

  L2

  Duration

  4 h

  Prerequisites

  1 prerequisites

• BAC-L2-SUB-112Advanced

  Runtime APIs and custom RPC

  Exposing a read the raw storage does not give directly, without turning the node into an application server.

  Level

  L2

  Duration

  4 h

  Prerequisites

  2 prerequisites

• BAC-L2-SUB-113Expert

  Runtime upgrades and state migrations

  Forkless upgradeability is the Polkadot SDK's headline argument — and the source of its costliest incidents when state migration is botched.

  Level

  L2

  Duration

  4 h

  Prerequisites

  1 prerequisites

Own governance, contracts, EVM compatibility, networking, then the complete chain.

• BAC-L2-SUB-114Advanced

  Governing your own chain

  Moving past the single admin account: council, referenda, enactment delays. An application chain's decentralisation trajectory.

  Level

  L2

  Duration

  4 h

  Prerequisites

  1 prerequisites

• BAC-L2-SUB-115Advanced

  Smart contracts on a Substrate chain

  When to open your chain to third-party code, and on what terms — the exact opposite of the reflex to put everything in a contract.

  Level

  L2

  Duration

  4 h

  Prerequisites

  1 prerequisites

• BAC-L2-SUB-116Advanced

  EVM compatibility

  Hosting the Ethereum toolchain on a Substrate chain: what compatibility genuinely buys, and the boundaries it does not cross.

  Level

  L2

  Duration

  4 h

  Prerequisites

  2 prerequisites

• BAC-L2-SUB-117Expert

  Networking, discovery and synchronisation

  The layer you ignore until the day a node stops syncing: peer discovery, gossip, synchronisation strategies.

  Level

  L2

  Duration

  4 h

  Prerequisites

  1 prerequisites

• BAC-L2-SUB-118Expert

  Substrate capstone: a complete application-specific blockchain

  Deliver an application chain answering a real Cameroonian use case: business pallets, tests, measured weights, governance, operations documentation.

  Level

  L2

  Duration

  6 h

  Prerequisites

  3 prerequisites