11 · Evidence Library
Public Source Register
Source reliability hierarchy
LEVEL 1 — FIRST-PARTY TECHNICAL
Chess.com Help Center, product documentation, API documentation.
LEVEL 2 — FIRST-PARTY CORPORATE
Chess.com news, announcements and official corporate statements.
LEVEL 3 — PARTNER SOURCE
Partner or co-organiser public statement.
LEVEL 4 — THIRD-PARTY ADJACENT
Prediction markets, press and other ecosystem participants.
13 of 13 sources
CC-AC-001 · Chess.com Support · Current help documentation
How Accuracy Is Determined (CAPS2)
Chess.com describes a computer-implemented comparison of played moves against engine-determined best play, returning a numerical accuracy score for each player.
Establishes
- Moves are processed computationally against a reference model.
- A numeric per-game score is derived from move-level evaluation.
Does not establish
- No economic value, resource allocation or reward is attached to a move.
- No monetary point value or settlement mechanism is disclosed.
Relevance
Claims / domain
CC-GR-001 · Chess.com Support · Current help documentation
How Game Review Works
Game Review provides move-by-move engine evaluation, key-moment identification, classification of each move and guided analysis of the completed game.
Establishes
- Per-move classification is generated and displayed to the player.
- Post-game structured analysis is a productised capability.
Does not establish
- Classifications are informational; no reward, token or payment is attached.
Relevance
Claims / domain
CC-MC-002 · Chess.com Support · Current classification model
Move Classification and the Expected Points Model
The newer move-classification model uses an Expected Points Model considering engine evaluation and player rating to estimate likely outcomes, producing categories including Brilliant, Great, Best, Excellent, Good, Inaccuracy, Mistake and Blunder.
Establishes
- A computer model converts a move into an expected-outcome delta.
- Player context (rating) already modifies the value assigned to a move.
Does not establish
- Expected points are not monetary points and are not redeemable.
- No external economic reference data participates in the model.
Relevance
Claims / domain
CC-EV-001 · Chess.com · Current platform
Events Broadcast Platform
Chess.com's Events system supports live game relay, Stockfish analysis, tablebases, schedules, standings, embedded commentary, voting and broadcast to spectators.
Establishes
- A global live game-event ingestion and distribution infrastructure exists.
- Live board state is analysed and broadcast in real time.
Does not establish
- No economic event engine, prediction engine or settlement layer is disclosed.
Relevance
Claims / domain
CC-EV-002 · Chess.com Support · Current help documentation
Events Page and Livestream Guide
Guide describing live board tracking, move notation, Stockfish analysis panels and broadcast workflows for followed events, including over-the-board competitions.
Establishes
- Structured live move data is tracked and presented for both online and physical events.
Does not establish
- No move-level economic consequence is described.
Relevance
Claims / domain
CC-API-001 · Chess.com · Current documentation
Published-Data API (PubAPI) Documentation
PubAPI is a read-only REST interface exposing public player, game, club and tournament information in JSON-LD form.
Establishes
- Structured, externally accessible game and tournament data exists.
Does not establish
- The public API cannot presently be used to submit game moves.
- It does not demonstrate any Miner's Gambit functionality.
Relevance
Claims / domain
CC-CR-001 · Chess.com · 2021
CryptoChamps, Powered by Coinbase
Chess.com publicly promoted a chess tournament involving prominent figures from the cryptocurrency ecosystem, powered by Coinbase.
Establishes
- First-party Chess.com promotion within the cryptocurrency ecosystem.
- Commercial willingness to associate the brand with digital-asset partners.
Does not establish
- No cryptocurrency mechanic operated inside gameplay.
- Not necessarily current strategy.
Relevance
Claims / domain
CC-BC-001 · Chess.com / Charlotte Chess Center · 2021
Blitzcoin Invitational Announcement
Chess.com and the Charlotte Chess Center presented a tournament in which players competed for their share of one Bitcoin.
Establishes
- Bitcoin-denominated competitive chess prize pools have already occurred with Chess.com involvement.
Does not establish
- Bitcoin operated as a prize at the edge of the event, not within gameplay logic.
Relevance
Claims / domain
CC-BC-002 · Chess.com · 2021
Blitzcoin Invitational Final Payouts
Event coverage reported Daniel Naroditsky receiving 0.296 BTC for first place and Awonder Liang 0.148 BTC for second.
Establishes
- Actual settlement of chess competition outcomes in Bitcoin was reported.
Does not establish
- No automated or smart-contract settlement mechanism is described.
Relevance
Claims / domain
CC-TC-001 · Chess.com · 2021-2022, subsequently discontinued
Treasure Chess NFT Marketplace
Chess.com described Treasure Chess as an experimental marketplace through which games could be minted into NFTs on Polygon using the ERC-721 standard and subsequently bought, sold, traded and gifted, including outside the marketplace. Chess.com subsequently discontinued the product, publicly stating that NFTs no longer aligned with its core vision.
Establishes
- Chess game data has previously been connected to transferable blockchain assets.
- Working familiarity with Polygon and ERC-721 tokenisation.
Does not establish
- Tokenisation applied to the completed game record, not to moves, pieces or positions during play.
- The product is discontinued and is not current functionality.
Relevance
Claims / domain
PT-EWC-001 · Chess.com · 2026
2026 Esports World Cup Chess Finals
Chess.com's announcement identifies a US$1.5 million prize fund and describes the competition as a high-stakes tournament spectacle.
Establishes
- Competitive chess is operating at esports-scale prize economics with global broadcast.
Does not establish
- No programmable prize pool, tokenisation or spectator economic layer is disclosed.
Relevance
Claims / domain
PUBLIC EVIDENCE 12 · Chess.com · 2026
2026 Esports and Champions Chess Tour Ecosystem
The qualification ecosystem includes the Speed Chess Championship and Chess.com Global Championship, each announced with substantial prize pools across a year-round competitive pathway.
Establishes
- A continuous calendar of high-value, structured, broadcast competitive events.
Does not establish
- No economic gameplay mechanics are described.
Relevance
Claims / domain
TP-PM-001 · Polymarket (third party) · 2025-2026 season
Speed Chess Championship Prediction Market
Polymarket offered a market on the winner of the 2025-2026 Speed Chess Championship and identified official Chess.com information as the resolution source.
Establishes
- Externally observable market demand for chess-event outcomes.
- Chess-event data is suitable as an externally verifiable resolution source.
Does not establish
- This does not establish that Chess.com operates, sponsors or endorses Polymarket's market.
Relevance
Claims / domain