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onchain central-limit-order-book prediction exchange

Polymarket prediction market review

Review Polymarket's listed formats, network context, access questions, mechanics, fees, custody, settlement, risks, and primary-source checks.

LivePolygon

Reviewed 2026-08-10 · Informational profile · Not an endorsement

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Platform facts

Status hint
Live
Venue type
onchain central-limit-order-book prediction exchange
Outcome types
binary, categorical
Chains
Polygon
Mechanisms
clob
Last reviewed
2026-08-10

Geoblocked and close-only jurisdictions are enumerated in the official geographic-restrictions documentation; eligibility is IP-dependent.

Geoblocked and close-only jurisdictions are enumerated in the official geographic-restrictions documentation; eligibility is IP-dependent.

Overview

Polymarket is classified here as a onchain central-limit-order-book prediction exchange, with structured references to binary and categorical outcomes and Polygon. Those labels provide a comparison starting point, not a complete product specification. The venue entered this dataset with a live status hint rather than a continuously monitored uptime claim. The retained research status reads "live": The official site and developer documentation expose active markets, trading APIs, fees, and geographic eligibility checks.

https://polymarket.com/ is the cited primary source for Polymarket. Current documentation there should override any status or classification hint in this generated profile. The claims below remain limited to what the cited material supports.

For Polymarket, this record preserves only the classifications binary and categorical, clob, and Polygon. It does not convert taxonomy into claims about launch maturity, regulatory treatment, liquidity, or product quality. The resulting profile favors a smaller defensible claim set over apparent completeness.

Access and eligibility

Polymarket's retained sources describe regional or eligibility boundaries, but readers should still check the current terms before access. Research summary: Geoblocked and close-only jurisdictions are enumerated in the official geographic-restrictions documentation; eligibility is IP-dependent.

For Polymarket, status and eligibility are distinct questions. The live hint says nothing definitive about a specific reader's legal or operational access. KYC summary: Unknown for the international wallet interface; official documentation says restrictions support KYC/AML compliance but does not establish a universal identity-verification flow.

Markets and mechanics

The mechanics snapshot for Polymarket lists clob, serving markets described as binary and categorical. A label such as AMM, CLOB, or sportsbook is too broad to determine actual fills or payouts.

Before using Polymarket, compare the displayed quote with available size and the complete resolution specification. Neither a probability-like number nor a category label guarantees executable value. Settlement and resolution summary: UMA Optimistic Oracle: bonded proposal, two-hour challenge period, and escalation to UMA DVM voting after repeated disputes; winning tokens redeem for $1 pUSD.

Fees, KYC and custody

The research record contains concrete cost information for Polymarket, without assuming that one rate applies to every product or jurisdiction. Retained fee evidence: Makers pay no trading fee. Takers pay category-specific, price-dependent fees; geopolitical/world-event markets are fee-free.

Some custody evidence is documented for Polymarket; that does not remove smart-contract, counterparty, signer, bridge, or account-recovery risk. Retained custody evidence: Self-hosted wallet and smart-contract collateral on Polygon; official sources reviewed do not establish custody terms for every supported onboarding method.

Risks and verification

Risk review for Polymarket should include market loss, thin depth, disputed resolution, account interruption, smart-contract or counterparty failure, and changing legal treatment. The live label is not a safety rating. Documented limitations include: Trading is geographically restricted, Taker fees vary by category and price, and Disputed resolution can take several days.

Polymarket's cited source is https://polymarket.com/. Compare every material statement here with current primary documentation and regard silence about fees, custody, or eligibility as unresolved—not favorable evidence. Priority evaluation checks include: Verify the live geoblock response before order entry, Read each market's resolution source and edge cases, Inspect fee parameters for the specific market, and Confirm collateral and chain before funding.

Known details and open questions

KYC

Unknown for the international wallet interface; official documentation says restrictions support KYC/AML compliance but does not establish a universal identity-verification flow.

Fees

Makers pay no trading fee. Takers pay category-specific, price-dependent fees; geopolitical/world-event markets are fee-free.

Custody

Self-hosted wallet and smart-contract collateral on Polygon; official sources reviewed do not establish custody terms for every supported onboarding method.

Settlement

UMA Optimistic Oracle: bonded proposal, two-hour challenge period, and escalation to UMA DVM voting after repeated disputes; winning tokens redeem for $1 pUSD.

Strengths

  • Public order-book and market APIs
  • Rule-based oracle challenge process
  • Category-level fee schedule is published

Limitations

  • Trading is geographically restricted
  • Taker fees vary by category and price
  • Disputed resolution can take several days

How to evaluate Polymarket

  • Verify the live geoblock response before order entry
  • Read each market's resolution source and edge cases
  • Inspect fee parameters for the specific market
  • Confirm collateral and chain before funding
  • Assess order-book depth and slippage
  • Confirm that https://polymarket.com/ is the current official domain for Polymarket.
  • Compare the "live" hint with a dated official availability notice.
  • Read restricted-jurisdiction, age, sanctions, and account-eligibility terms.
  • Locate the complete fee schedule, including spreads, gas, deposits, and withdrawals.
  • Identify custody, collateral, wallet permissions, and the withdrawal process.
  • Verify how binary and categorical markets define evidence, cancellation, disputes, and settlement.
  • Confirm authentic contracts, assets, and network support for Polygon.

Official sources

Polymarket FAQs

What is Polymarket's current status?

The conservative status hint is "live" as reviewed on 2026-08-10. The retained status evidence says: The official site and developer documentation expose active markets, trading APIs, fees, and geographic eligibility checks.

Which market formats are associated with Polymarket?

The supported structured facts list binary and categorical. This does not establish that every format is currently open to every user.

Does Polymarket require KYC and what are its fees?

KYC: Unknown for the international wallet interface; official documentation says restrictions support KYC/AML compliance but does not establish a universal identity-verification flow. Fees: Makers pay no trading fee. Takers pay category-specific, price-dependent fees; geopolitical/world-event markets are fee-free.

How does Polymarket handle custody and settlement?

Custody: Self-hosted wallet and smart-contract collateral on Polygon; official sources reviewed do not establish custody terms for every supported onboarding method. Settlement and resolution: UMA Optimistic Oracle: bonded proposal, two-hour challenge period, and escalation to UMA DVM voting after repeated disputes; winning tokens redeem for $1 pUSD.

Where should Polymarket information be verified?

Use the cited primary website, https://polymarket.com/, and its linked legal and technical documentation.

Tools that support Polymarket

These ecosystem products list Polymarket among their supported venues. Their inclusion is informational and does not imply compatibility, endorsement or current availability.

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This profile is independent editorial research. It does not provide legal, investment or financial advice. Read the platform-directory methodology.