One rating · every discipline · zero conflict of interest

ISRSO maintains a universal, mathematically fair skill rating standard. We are a pure standard organization — like FIDE for chess or ISO for engineering. We certify platforms that host events; we do not host events ourselves. This separation is structural, not preferential.

Where ISRSO ends · where platforms begin

A hard line — drawn on purpose. The standard organization stays out of commerce so its rulings are above suspicion. Platforms carry the operational load and earn the revenue.

5 tiers × 5 divisions · then King

Each tier floor is a rating score line set by rarity. Each tier is roughly 10× rarer than the one below. King has no divisions; its stars simply add up.

A struck medal for every tier

The tier is told by the crest and its metal. Your progress inside the tier is told by the medal itself: notches, gem sockets, ribbon and halo.

Anatomy · Gold II, 2 of 5 stars, promotion window open

King has no divisions: the notches are replaced by a “★N” inscription. Others see a small medal next to your avatar on match cards, entry lists, draws, rankings and your profile; a gold ring around it means a promotion window is open.

10 placement matches, then Elo

The rating keeps it fair; stars and the medal make progress visible. Both phases share one scale (anchor 1500, 400-point log scale), so nothing is converted at the hand-over.

Stars follow how you actually played

Not a flat +1 / −1. Stars depend on d = S_set − E: the set-score value minus your pre-match win chance. The rating counts only win or loss; the set score only affects stars. Stars come only from matches.

Crossing a tier takes a performance, not a streak

Like a chess norm: over a window of matches, your performance rating (from wins and losses) must reach the next tier's floor. Tournament draws can't rob you, because strong opponents count for more.

Every match visibly changes something

Medal-minting craft: each tier is a metal, and the motion is striking, setting stars, setting gems and crowning. It plays only when something happens.

With “reduce motion” on, the final state is shown directly. Haptics follow system settings. No sound effects. Text on metal meets contrast requirements.

3 seasons / year · rating carries over

Three seasons a year gives every discipline time for meaningful matches. At each boundary your rating carries over untouched; only the stars are placed again by rating. Nothing is pulled back or reset.

A name you can wear · forever

Every King promotion mints a permanent number with a season stamp, an issue index and a discipline tag. It holds across disciplines and seasons and is never reissued, like a retired jersey number.

Time off never costs a tier

A break does not change your tier, division or stars. It only lowers how sure the system is about your rating (RD), and the medal shows that as a light fog.

Stars only come from matches

Trust is the standard

A rating system worth following is one you can defend. ISRSO publishes its integrity rules publicly and in full — detection layers, appeal pathways, sanction ladder. How the records themselves can be checked is the next chapter. No hidden clauses in the rules; no shortcut to a verdict.

Anti-fraud · 4 detection layers

Dispute resolution · the 4-step path

Sanctions · 5-step graduated ladder

Sanction closed loop — in production since 2026-07. A verdict automatically reverses the rating, rebuilds the tier state and notifies the federation. Under v2 a voided match or upheld appeal replays the athlete's matches in order, rating, stars and promotion windows included, with the same result every time.

Don’t take our word for it

Trust should not rest on what we say about ourselves. It rests on three things: open rules, records that cannot be rewritten, and results that can be recomputed. We are not asking anyone to vouch for us first. Instead, the system is built so that if the platform touches a record it shouldn’t, it leaves a trace that can be caught — and the records about you are yours to check.

Four steps, from match to proof

Eight ideas behind it

Our limits — we don’t say ‘absolute’

An honest system starts by saying what it cannot do. On the left: what you will be able to check yourself once the ledger is on. On the right: what, for now, still rests on trusting the platform.

Next: make the right-hand column shorter. External copies and third-party timestamps are being introduced: seals will also be kept by someone outside the platform, and a third party will stamp them with the time. Joint witnessing by organisations comes after that. Our own rule: until external copies and timestamps are in place, we will not claim the seals are in effect.

The math under the medallion

The rating is the source of truth; divisions, stars and windows are derived from it. Everything is recorded per match, so any result can be replayed and audited.

Three committees · one charter · pinned versions

A standard worth following is one you can read, version, and challenge. ISRSO operates under three independent committees, a public founding charter, and semantically-versioned releases. The standard evolves — but never silently.

Governance bodies

Version timeline

Where ISRSO is administered

Platforms pass the ISRSO conformance audit — algorithm fidelity, anti-fraud, badge rendering, public leaderboard — to issue ratings. ISRSO does not host events; platforms do. Below: the four ecosystem platforms certified at the time of this writing.