{"slug":"pm-geographic-access","title":"Prediction market geographic access, which countries can reach each venue","subtitle":"HTTP probes from regional nodes checking 200 OK vs blocked or redirect for Polymarket, Kalshi, Limitless, Manifold and Myriad, reported as percent of regions returning a successful response.","category":"Trading","metric":"Geographic accessibility rate","unit":"pct","status":"live","higherIsBetter":true,"filters":null,"value":100,"leader":{"name":"Polymarket","slug":"polymarket","value":100},"rankings":[{"name":"Polymarket","slug":"polymarket","ms":{"p50":100,"p90":100,"p99":100,"mean":100},"successRate":100,"sampleSize":6.01609},{"name":"Kalshi","slug":"kalshi","ms":{"p50":100,"p90":100,"p99":100,"mean":100},"successRate":100,"sampleSize":6.01609},{"name":"Limitless","slug":"limitless","ms":{"p50":100,"p90":100,"p99":100,"mean":100},"successRate":100,"sampleSize":6.01609},{"name":"Myriad","slug":"myriad","ms":{"p50":100,"p90":100,"p99":100,"mean":100},"successRate":100,"sampleSize":6.01609}],"sparkline":[100,100,100,100,100,100,100,100],"sampleSize":25.076860000000003,"asOf":"2026-07-29T03:38:14.939Z","headline":"Polymarket leads geographic accessibility rate at 100.0% (24h avg) on Prediction market geographic access, which countries can reach each venue.","quote":"Polymarket leads geographic accessibility rate at 100.0% (24h avg) on Prediction market geographic access, which countries can reach each venue. Source: OpenChainBench (https://openchainbench.com/benchmarks/pm-geographic-access).","cite":{"plain":"OpenChainBench. \"Prediction market geographic access, which countries can reach each venue\". Retrieved 2026-07-29. https://openchainbench.com/benchmarks/pm-geographic-access","bibtex":"@misc{ocb_pm_geographic_access,\n  author = {OpenChainBench},\n  title  = {Prediction market geographic access, which countries can reach each venue},\n  year   = {2026},\n  url    = {https://openchainbench.com/benchmarks/pm-geographic-access},\n  note   = {Retrieved 2026-07-29}\n}","apa":"OpenChainBench. (2026). Prediction market geographic access, which countries can reach each venue. Retrieved July 29, 2026, from https://openchainbench.com/benchmarks/pm-geographic-access","ris":"TY  - GEN\r\nAU  - OpenChainBench\r\nTI  - Prediction market geographic access, which countries can reach each venue\r\nPY  - 2026\r\nUR  - https://openchainbench.com/benchmarks/pm-geographic-access\r\nY2  - 2026-07-29\r\nER  - \r\n"},"pageUrl":"https://openchainbench.com/benchmarks/pm-geographic-access","ogImage":"https://openchainbench.com/api/og/pm-geographic-access","source":"https://github.com/ChainBench/OpenChainBench/tree/main/harnesses/pm-geographic-access","methodology":["Probe design: the harness sends an HTTP GET to each venue's public market listing endpoint from dedicated probe nodes in 12 geographic regions once every 15 minutes. The request carries an identifying User-Agent and no VPN or proxy. Response codes, redirect chains and response body patterns are recorded.","Blocked classification: a response is classified as blocked if the HTTP status code is 403, if the response is a redirect to a URL containing terms such as block, geo, unavailable, or restricted, or if the TCP connection is reset before a response is received. Timeouts over 10 seconds are classified as unreachable rather than blocked.","Metric definition: the pct metric is the share of probe regions returning a 200 OK response to the venue's market listing endpoint in the trailing 24-hour window. A venue accessible from all 12 regions scores 100 pct. A venue blocked from all US probes but accessible from 9 of 12 regions scores 75 pct.","Polymarket disambiguation: the harness probes both polymarket.com (international exchange, geoblocked for US IPs) and the Polymarket US (QCX) endpoint separately and reports them as distinct rows. The combined accessibility row shows the union of regions that can reach either endpoint.","Legal access vs HTTP access: this bench measures what the API returns to an HTTP request, not what a person in a given jurisdiction is legally permitted to do. A 200 OK from a US probe on a venue's endpoint does not mean US users are legally permitted to trade on that venue. Consult venue terms of service and qualified legal counsel for legal access questions.","Regulatory events: when a regulatory event changes HTTP-level access (such as the Polymarket US geoblock in 2022 or the Minnesota ban in 2026), the probe series will reflect the change within one probe cycle (15 minutes). The bench changelog records the date and description of each regime change."],"license":"CC-BY-4.0"}