{"slug":"premium-and-discount","title":"Premium and discount","tagline":"Split a known range at its midpoint.","answer":"The high and low of the preceding sixteen completed candles define this reference range. The midpoint divides its upper and lower halves.","read":"Freeze the range before revealing the next candle. Compare the candle close with the midpoint. Above the range and below the range are outside states, not hidden extensions of the halves.","caution":"Premium and discount are relative to a chosen range. Being in the lower half is not proof of undervaluation or a reason to buy.","practice":"Record the range endpoints and midpoint before continuing. Keep an outside-range state in your replay journal.","id":"xauusd-m15-premium-and-discount-1780300800","symbol":"XAUUSD","timeframe":"M15","provenance":{"file":"public/data/XAUUSD_M1.bin","sha256":"491fb3325ee1e68bb013b7626c00933efc6f6073ff77f5846ef870b80a77535d","sourceRows":1989529,"sourceGapIntervals":1835,"provider":"Dukascopy historical XAUUSD bid prices","sourceUrl":"https://www.dukascopy.com/swiss/english/marketwatch/historical/","basis":"bid","timezone":"UTC","interval":"[open, open + 15 minutes)","aggregation":"Only UTC-aligned buckets containing all 15 consecutive M1 observations. Missing buckets are excluded; examples require continuous M15 windows.","selection":"First qualifying continuous June 2026 window in chronological order for each declared rule. Teaching examples, not a population performance sample.","ruleVersion":"atlas-1.0.0","sourceRevision":"cd18dcbbc384501ac3faffc2c18f60266ece6780"},"candles":[{"t":1780291800,"o":4520.294921875,"h":4521.955078125,"l":4512.365234375,"c":4519.5751953125},{"t":1780292700,"o":4519.55517578125,"h":4525.05517578125,"l":4516.65478515625,"c":4517.9150390625},{"t":1780293600,"o":4517.90478515625,"h":4518.43505859375,"l":4512.4951171875,"c":4513.8349609375},{"t":1780294500,"o":4513.84521484375,"h":4515.6748046875,"l":4504.65478515625,"c":4513.97509765625},{"t":1780295400,"o":4514.31494140625,"h":4514.65478515625,"l":4501.30810546875,"c":4504.384765625},{"t":1780296300,"o":4504.47509765625,"h":4504.794921875,"l":4500.09521484375,"c":4501.5048828125},{"t":1780297200,"o":4501.28515625,"h":4509.81494140625,"l":4500.375,"c":4507.03515625},{"t":1780298100,"o":4506.9951171875,"h":4508.115234375,"l":4502.9248046875,"c":4503.60498046875},{"t":1780299000,"o":4503.634765625,"h":4507.4951171875,"l":4497.71484375,"c":4497.94482421875},{"t":1780299900,"o":4497.9248046875,"h":4502.93505859375,"l":4492.19482421875,"c":4502.93505859375},{"t":1780300800,"o":4502.9150390625,"h":4504.34521484375,"l":4493.2548828125,"c":4495.46484375},{"t":1780301700,"o":4495.865234375,"h":4496.71484375,"l":4490.17822265625,"c":4495.7451171875},{"t":1780302600,"o":4495.85498046875,"h":4500.23486328125,"l":4492.455078125,"c":4499.98486328125},{"t":1780303500,"o":4499.73486328125,"h":4502.3349609375,"l":4495.44482421875,"c":4497.85498046875},{"t":1780304400,"o":4497.705078125,"h":4500.544921875,"l":4497.5048828125,"c":4499.51513671875},{"t":1780305300,"o":4499.51513671875,"h":4506.1748046875,"l":4496.1748046875,"c":4496.1748046875},{"t":1780306200,"o":4496.1748046875,"h":4499.205078125,"l":4488.96484375,"c":4498.1650390625},{"t":1780307100,"o":4498.1650390625,"h":4498.31494140625,"l":4493.72509765625,"c":4495.80517578125},{"t":1780308000,"o":4495.794921875,"h":4502.0048828125,"l":4495.794921875,"c":4501.384765625}],"focus":[9,10],"marks":[{"low":4492.19482421875,"high":4525.05517578125,"label":"Reference range","from":9},{"low":4508.625,"high":4508.625,"label":"Midpoint","from":9}],"recognition":10,"initial":10,"confirmationTime":1780301700,"observationEnd":1780308900,"facts":{},"observation":"Finite displayed window only. OHLC crossing does not prove trading at every intervening price or intrabar event order. No trade P&L is measured.","counterexample":{"slug":"premium-and-discount","title":"Premium and discount","tagline":"Split a known range at its midpoint.","answer":"The high and low of the preceding sixteen completed candles define this reference range. The midpoint divides its upper and lower halves.","read":"Freeze the range before revealing the next candle. Compare the candle close with the midpoint. Above the range and below the range are outside states, not hidden extensions of the halves.","caution":"Premium and discount are relative to a chosen range. Being in the lower half is not proof of undervaluation or a reason to buy.","practice":"Record the range endpoints and midpoint before continuing. Keep an outside-range state in your replay journal.","id":"xauusd-m15-premium-and-discount-non-event-1780309800","symbol":"XAUUSD","timeframe":"M15","candles":[{"t":1780282800,"o":4521.22509765625,"h":4525.384765625,"l":4515.2880859375,"c":4518.615234375},{"t":1780283700,"o":4518.634765625,"h":4521.26513671875,"l":4513.55517578125,"c":4520.3251953125},{"t":1780284600,"o":4520.34521484375,"h":4523.90478515625,"l":4509.615234375,"c":4510.43505859375},{"t":1780285500,"o":4510.365234375,"h":4516.14501953125,"l":4509.634765625,"c":4516.14501953125},{"t":1780286400,"o":4516.10498046875,"h":4519.52490234375,"l":4512.087890625,"c":4514.44482421875},{"t":1780287300,"o":4514.48486328125,"h":4518.26513671875,"l":4514.48486328125,"c":4515.69482421875},{"t":1780288200,"o":4515.69482421875,"h":4517.0849609375,"l":4513.34521484375,"c":4514.31494140625},{"t":1780289100,"o":4514.294921875,"h":4514.9248046875,"l":4508.39501953125,"c":4514.14501953125},{"t":1780290000,"o":4514.18505859375,"h":4519.044921875,"l":4513.27783203125,"c":4517.865234375},{"t":1780290900,"o":4518.15478515625,"h":4523.375,"l":4517.34521484375,"c":4520.2548828125},{"t":1780291800,"o":4520.294921875,"h":4521.955078125,"l":4512.365234375,"c":4519.5751953125},{"t":1780292700,"o":4519.55517578125,"h":4525.05517578125,"l":4516.65478515625,"c":4517.9150390625},{"t":1780293600,"o":4517.90478515625,"h":4518.43505859375,"l":4512.4951171875,"c":4513.8349609375},{"t":1780294500,"o":4513.84521484375,"h":4515.6748046875,"l":4504.65478515625,"c":4513.97509765625},{"t":1780295400,"o":4514.31494140625,"h":4514.65478515625,"l":4501.30810546875,"c":4504.384765625},{"t":1780296300,"o":4504.47509765625,"h":4504.794921875,"l":4500.09521484375,"c":4501.5048828125},{"t":1780297200,"o":4501.28515625,"h":4509.81494140625,"l":4500.375,"c":4507.03515625},{"t":1780298100,"o":4506.9951171875,"h":4508.115234375,"l":4502.9248046875,"c":4503.60498046875},{"t":1780299000,"o":4503.634765625,"h":4507.4951171875,"l":4497.71484375,"c":4497.94482421875},{"t":1780299900,"o":4497.9248046875,"h":4502.93505859375,"l":4492.19482421875,"c":4502.93505859375},{"t":1780300800,"o":4502.9150390625,"h":4504.34521484375,"l":4493.2548828125,"c":4495.46484375},{"t":1780301700,"o":4495.865234375,"h":4496.71484375,"l":4490.17822265625,"c":4495.7451171875},{"t":1780302600,"o":4495.85498046875,"h":4500.23486328125,"l":4492.455078125,"c":4499.98486328125},{"t":1780303500,"o":4499.73486328125,"h":4502.3349609375,"l":4495.44482421875,"c":4497.85498046875},{"t":1780304400,"o":4497.705078125,"h":4500.544921875,"l":4497.5048828125,"c":4499.51513671875},{"t":1780305300,"o":4499.51513671875,"h":4506.1748046875,"l":4496.1748046875,"c":4496.1748046875},{"t":1780306200,"o":4496.1748046875,"h":4499.205078125,"l":4488.96484375,"c":4498.1650390625},{"t":1780307100,"o":4498.1650390625,"h":4498.31494140625,"l":4493.72509765625,"c":4495.80517578125},{"t":1780308000,"o":4495.794921875,"h":4502.0048828125,"l":4495.794921875,"c":4501.384765625},{"t":1780308900,"o":4501.4248046875,"h":4503.365234375,"l":4495.955078125,"c":4500.72509765625},{"t":1780309800,"o":4500.76513671875,"h":4507.31494140625,"l":4500.3251953125,"c":4505.7548828125},{"t":1780310700,"o":4505.794921875,"h":4510.78515625,"l":4502.3251953125,"c":4503.78515625},{"t":1780311600,"o":4503.77490234375,"h":4506.55517578125,"l":4499.60498046875,"c":4504.77490234375},{"t":1780312500,"o":4504.8349609375,"h":4512.78515625,"l":4503.96484375,"c":4510.48486328125},{"t":1780313400,"o":4510.43505859375,"h":4512.14501953125,"l":4506.02490234375,"c":4506.97509765625},{"t":1780314300,"o":4506.97509765625,"h":4509.5751953125,"l":4505.21484375,"c":4505.634765625},{"t":1780315200,"o":4505.634765625,"h":4509.40478515625,"l":4503.0048828125,"c":4503.18505859375},{"t":1780316100,"o":4503.03515625,"h":4507.56494140625,"l":4497.22509765625,"c":4505.35498046875},{"t":1780317000,"o":4505.30517578125,"h":4508.1650390625,"l":4497.46484375,"c":4507.18505859375}],"focus":[28,29,30],"marks":[],"recognition":30,"initial":30,"isCounterexample":true,"candidateTime":1780309800,"explanation":"Fixed range 4488.965–4514.655, midpoint 4501.810; candidate close 4505.755 is not strictly inside its lower half."}}