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. 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 |
| 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.
