> ## Documentation Index
> Fetch the complete documentation index at: https://docs.microset.io/llms.txt
> Use this file to discover all available pages before exploring further.
# Program & Contracts
> The Solana program: ID, instructions, accounts, access control, and events.
This page is the authoritative technical reference for Microset's on-chain
footprint — a single Anchor program, `prediction_market`, implementing a
sport-agnostic, parimutuel, multi-outcome market. For a plain-language version,
see [How Markets Work](/security/smart-contract).
## Program identity
| Field | Value |
| ------------------------ | -------------------------------------------------------------------------------------------------------------------------- |
| Program name | `prediction_market` (Anchor) |
| Program ID | `B6nzqfZfxJ2UyAGD7ko3zSa2QLF8aWNjHqjkDqh1dzsC` |
| Cluster | Solana **devnet** |
| Used by | Frontend (`app.microset.io`) and backend API |
| Explorer | [View on Solana Explorer](https://explorer.solana.com/address/B6nzqfZfxJ2UyAGD7ko3zSa2QLF8aWNjHqjkDqh1dzsC?cluster=devnet) |
| Treasury (fee recipient) | `3AzAex6froVqKX4EknPHsccZK8YjmFtqkzR3dWDxn9Cz` |
| Upgrade authority | A single key held by Microset |
## Instructions
### Core
| Instruction | Purpose | Who can call |
| ------------------- | -------------------------------------------------------------------------------- | --------------------------------------------------------------------------------- |
| `initialize_config` | Create the global `Config` (treasury, fee, resolution authority); unpause | One-time setup by the deployer |
| `update_config` | Update treasury, fee, resolution authority, or pause state | `config.authority` only |
| `create_market` | Create a market (`market_id`, outcomes, name, close/resolve times) and its vault | Microset's backend authority (markets are created **authority-only** in practice) |
| `place_bet` | Stake SOL on an outcome | Any user |
| `resolve` | Set the winning outcome; send the protocol fee to the treasury | `config.resolution_authority` only |
| `void_market` | Void a market so users can claim full refunds | `config.resolution_authority` only |
| `claim` | Pay a winner's proportional share, or refund a voided market | The staking user |
### Quick-prediction delegate session
To let users make repeated predictions without re-prompting their wallet, the program
supports an explicit, user-funded **delegate session**:
| Instruction | Purpose |
| ------------------------- | ------------------------------------------------------------------------------------------------------------------------------------- |
| `create_delegate_session` | User signs once to create a session for a delegate key, funding an escrow with a spend cap (`max_lamports`) and expiry (`expires_at`) |
| `fund_delegate_session` | Add SOL to an existing session (raises escrow and cap) |
| `place_bet_with_delegate` | Make a prediction signed by the delegate key, drawn from the capped escrow |
| `withdraw_delegate_funds` | Withdraw unused escrow back to the owner |
| `revoke_delegate_session` | Revoke the session at any time |
## Access control
| Role | Holder | Powers |
| ---------------------- | ----------------------------- | --------------------------------------------------------- |
| `authority` | A single key held by Microset | Update config, treasury, fee, resolution authority, pause |
| `resolution_authority` | Microset's backend key | Resolve and void markets |
| Market creation | Authority-only in practice | Markets are created by Microset's backend |
The protocol fee (`protocol_fee_bps`) and resolution authority are stored in the
on-chain `Config` and can be changed only by `config.authority`. The fee is
capped on-chain (`InvalidFeeBps` if it exceeds 100%).
## Accounts
| Account | Role |
| ------------------------------------------- | ---------------------------------------------------------------------------------------------------------- |
| `Config` (PDA `["config"]`) | Global config: `authority`, `treasury`, `protocol_fee_bps`, `resolution_authority`, `paused` |
| `Market` (PDA `["market", market_id]`) | One market: outcomes, per-outcome stake totals, close/resolve times, resolved state |
| `UserStake` (PDA `["stake", user, market]`) | A user's per-outcome stake and claim status |
| Vault (PDA `["vault", market]`) | Program-owned account holding all of a market's staked SOL |
| `DelegateSession` | A quick-prediction session: `owner`, `delegate`, `max_lamports`, `spent_lamports`, `expires_at`, `revoked` |
| `DelegateEscrow` | Holds the SOL funding a delegate session |
## Funds & settlement
* All stakes for a market sit in **one vault PDA**, with per-outcome accounting.
* On `resolve`, the protocol fee is taken from the pool and sent to the treasury (`3AzAex6f…xn9Cz`); the remainder is locked in for winners. If there are no winners, the pool goes to the treasury.
* `claim` pays each winner their proportional share of the post-fee pool; a voided market refunds stakes in full with no fee.
* Quick-prediction escrow is bounded by the user-set `max_lamports` cap and is revocable and withdrawable at any time.
## Resolution data
Microset does not set outcomes itself. Resolution is **triggered by third-party
data APIs**: when a recognized sports data provider (the Roanuz Sports API for
cricket) reports a final result, that result drives the `resolve` instruction,
which the resolution authority submits on-chain. This keeps outcomes tied to
real-world events rather than to Microset's discretion.
## Events
| Event | Emitted by |
| ---------------- | --------------------------------------- |
| `CreateMarket` | `create_market` |
| `BetPlaced` | `place_bet` / `place_bet_with_delegate` |
| `MarketResolved` | `resolve` |
| `Claimed` | `claim` |
| `MarketVoided` | `void_market` |
## Source & verification
* The Microset web app at `app.microset.io` and its backend both reference this program ID and IDL, which match the deployed program.
* Security review: internal security audits and vulnerability testing completed.