{"window_days":7,"from":"2026-09-13","games_returned":5,"games_withheld_below_min_bets":0,"min_bets":100,"method":{"estimator":"mean payout multiplier, currency independent","interval":"95%, mean plus or minus 1.96 standard errors","source":"each casino's own public bet feed, captured by us","sampling":"the feeds are rolling windows the operators publish; this is a sample of their flow, not the whole of it, and the selection rule is not visible to us","declared_rtp":"only Stake.com publishes a house edge, so declared_rtp and gap are null for other operators","selection_bias":"the feeds are the operators' own marketing surfaces and the selection leans toward winning rounds, so observed_return is UNCORRECTED and biased upward by an unknown amount that differs per operator. feed_bias reports 'curated' where an observed return above 100% proves the feed is incomplete, since no game returns more than it takes over the long run."},"confidence_levels":{"high":">=10000 bets","moderate":">=1000","low":">=100","insufficient":"<100"},"publishable":["low","moderate","high"],"source_kinds":{"observed":"Counted directly from the operator's public feed.","derived":"Computed from observed data through a documented method.","reported":"Published by the operator. We repeat it, we do not verify it.","estimate":"Model output carrying assumptions. Always a range."},"games":[{"casino":"Cloudbet","game":"Coinflip","provider":"cloudbet","bets":11550,"observed_return":0.6749910858665599,"declared_rtp":null,"gap":null,"std_error":0.014025475691740428,"ci95":[0.6475011535107487,0.7024810182223711],"max_multiplier":15.84,"confidence":"high","margin":0.02748993235581124,"publishable":false,"withheld":"implausible","diverges_from_declared":null,"window":{"from":"2026-09-13","to":"2026-09-20"},"published_loss_share":0.8178354978354978,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"Winna","game":"CoinFlip","provider":"internal house games","bets":5729,"observed_return":3.9884238086926165,"declared_rtp":null,"gap":null,"std_error":0.1595423356791516,"ci95":[3.6757208307614793,4.301126786623754],"max_multiplier":501.76,"confidence":"moderate","margin":0.31270297793113716,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-13","to":"2026-09-20"},"published_loss_share":0.5075929481584919,"feed_bias":"curated","observed_return_note":"This feed publishes more wins than it publishes losses, proven by an observed return above 100%. Read it as a floor on the operator's curation, not as the game's return.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"Shuffle","game":"Coinflip","provider":"unknown","bets":3513,"observed_return":0.9700447005036122,"declared_rtp":null,"gap":null,"std_error":0.03928332979614905,"ci95":[0.8930493741031601,1.0470400269040643],"max_multiplier":31.36,"confidence":"moderate","margin":0.07699532640045213,"publishable":true,"withheld":null,"diverges_from_declared":null,"window":{"from":"2026-09-13","to":"2026-09-20"},"published_loss_share":0.623398804440649,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"BC.Game","game":"CoinFlip","provider":"bc originals","bets":2665,"observed_return":0.7678198874296436,"declared_rtp":null,"gap":null,"std_error":0.08119760585403558,"ci95":[0.6086725799557339,0.9269671949035533],"max_multiplier":125.44,"confidence":"moderate","margin":0.15914730747390973,"publishable":false,"withheld":"imprecise","diverges_from_declared":null,"window":{"from":"2026-09-13","to":"2026-09-20"},"published_loss_share":0.8971857410881802,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}},{"casino":"Roobet","game":"Coinflip","provider":"housegames","bets":397,"observed_return":1.0011083123425693,"declared_rtp":null,"gap":null,"std_error":0.04813682499966871,"ci95":[0.9067601353432185,1.0954564893419199],"max_multiplier":1.9200000000000004,"confidence":"low","margin":0.09434817699935068,"publishable":false,"withheld":"implausible","diverges_from_declared":null,"window":{"from":"2026-09-13","to":"2026-09-20"},"published_loss_share":0.47858942065491183,"feed_bias":"unknown","observed_return_note":"Uncorrected for feed selection. The operator chooses which rounds to publish.","source":{"bets":"observed","observed_return":"derived","declared_rtp":null,"gap":null}}]}