SourceSturgeon, D. (n.d.). Chinese Text Project. https://ctext.org/book-of-changes
MethodIndependent re-run of the field-by-field comparison plus dedicated checks for character corruption and duplicate glyphs, on 22-23 Jun 2026.
Standard compared卦辭, 大象, and the 6 lines of all 64 hexagrams, including 用九/用六 (514 fields total).
Result514/514 fields matched (100%), with zero corruption flags.
StatusCurrent as of this date.
James Legge: verification (published edition)
Date verified23 Jun 2026
SourceLegge, J. (1882). The Yî King (F. M. Müller, Ed.; Sacred Books of the East, Vol. 16). Clarendon Press.
MethodAutomated field-by-field comparison between text extracted from a local EPUB of the published edition and the text served by the app.
Standard comparedJudgment (卦辭), Image (象辭), and the 6 lines (爻辭) of all 64 hexagrams, including 用九/用六 (514 fields total).
ResultFinal: 514/514 fields matched (100%).
StatusCurrent as of this date.
Wilhelm/Baynes: verification (published edition)
Date verified23 Jun 2026
SourceWilhelm, R., & Baynes, C. F. (1950). The I Ching or Book of Changes (Bollingen Series XIX). Princeton University Press.
MethodAutomated field-by-field comparison between text extracted from a local EPUB of the published edition and the text served by the app.
Standard comparedJudgment (卦辭), Image (象辭), and the 6 lines (爻辭) of all 64 hexagrams, including 用九/用六 (514 fields total).
ResultFinal: 514/514 fields matched (100%).
StatusCurrent as of this date.
Wilhelm/Baynes: initial verification
Date verified21 Jun 2026
SourceWilhelm, R. (n.d.). I Ching Wilhelm translation [Web mirror]. University of Parma. http://www2.unipr.it/~deyoung/I_Ching_Wilhelm_Translation.html
MethodAutomated field-by-field comparison between the text extracted from the mirror and the text served by the app.
Standard comparedJudgment (卦辭), Image (象辭), and the 6 lines (爻辭) of all 64 hexagrams, including the special texts 用九/用六 for hexagrams 1 and 2 (514 fields total).
ResultFinal: 514/514 fields matched (100%). Intermediate passes: 94.94% → 99.81% → 100%; the last 6 fields were completed from the printed edition where the web mirror had gaps.
StatusObsolete.
James Legge: initial verification
Date verified21 Jun 2026
SourceLegge, J. (1882). The Yî King [Web reproduction]. Internet Sacred Text Archive. https://sacred-texts.com/ich/index.htm
MethodAutomated field-by-field comparison against this published edition.
Standard comparedJudgment (卦辭), Image (象辭), and the 6 lines (爻辭) of all 64 hexagrams, including 用九/用六 (514 fields total).
ResultFinal: 514/514 fields matched (100%). Intermediate pass on 21 Jun: 77.19% → final: 100% after parser and gold corrections, verified directly against this published edition.
StatusObsolete.
Zhou Yi: initial verification
Date verified21 Jun 2026
SourceSturgeon, D. (n.d.). Chinese Text Project. https://ctext.org/book-of-changes
MethodThe app dataset had been built from a non-ctext source. A first automated field-by-field comparison detected wrong and duplicated glyphs in that dataset (hex 31 咸/鹹; hex 19 label collision). The bundle was re-ingested from ctext.org and re-verified the same day.
Standard compared卦辭, 大象, and the 6 lines of all 64 hexagrams, including 用九/用六 (514 fields total).
ResultFinal: 514/514 fields matched (100%). Intermediate pass on 21 Jun: 90.66% → final: 100% after re-ingestion and parser correction.
SourceWilhelm, R., & Baynes, C. F. (1950). The I Ching or Book of Changes (Bollingen Series XIX). Princeton University Press.
MethodAutomated verification of classical commentaries against the Wilhelm/Baynes (1950) published edition, including Wilhelm's own notes and Confucius's Ten Wings commentary.
Standard comparedWilhelm's own commentary and Confucius's Ten Wings notes on judgment, image, and each line; About this hexagram block; Words on the Text (hex 1-2 only); yong commentary (hex 1-2 only). 64 hexagrams.
Result1920/1920 fields matched (100%).
StatusCurrent as of this date.
Classical commentaries: James Legge
Date verified24 Jun 2026
SourceLegge, J. (1882). The Yî King (F. M. Müller, Ed.; Sacred Books of the East, Vol. 16). Clarendon Press.
MethodAutomated verification of classical commentaries against the James Legge (1882) published edition, including footnotes and the Great Symbolism of Appendix II.
Standard comparedFootnotes (64 hexagrams); Great Symbolism image gloss, Appendix II (64 hexagrams); Lesser Symbolism line notes, Appendix II (present for 6 of 64 hexagrams in Legge's edition).
ResultFootnotes and Great Symbolism image gloss fully covered (64/64, 100%); Lesser Symbolism line notes verified for every hexagram where Legge's edition includes them. Verification PASS.
StatusCurrent as of this date.
I Ching casting methods
Three coins: verification (published edition)
Date verified25 Jun 2026
SourceWilhelm, R., & Baynes, C. F. (1950). The I Ching or Book of Changes (Bollingen Series XIX). Princeton University Press.
MethodAutomated verification against Appendix I, section 2, of the Wilhelm/Baynes (1950) published edition (automatic and manual paths).
Standard comparedInscribed face = yin (2), reverse = yang (3); resulting lines 6, 7, 8, 9 and exact probabilities 1/8, 3/8, 3/8, 1/8.
ResultFinal: 3/3 checks passed (100%).
StatusCurrent as of this date.
Yarrow stalks: verification (published edition)
Date verified25 Jun 2026
SourceWilhelm, R., & Baynes, C. F. (1950). The I Ching or Book of Changes (Bollingen Series XIX). Princeton University Press.
MethodAutomated verification against Appendix I, section 1, of the Wilhelm/Baynes (1950) published edition (automatic and manual paths).
Standard comparedThree-round procedure, residue-to-line mapping, and line probabilities 1/16, 5/16, 7/16, 3/16.
ResultFinal: 6/6 checks passed (100%). The classical 1/16, 5/16, 7/16, 3/16 distribution is exact; an independent literal simulation of the physical procedure differs by under 1%, a fully explained effect of counting stalks in groups of four, not a discrepancy.
StatusCurrent as of this date.
Three coins: initial verification
Date verified19 May 2026
SourceNielsen, B. (2003). A companion to Yi Jing numerology and cosmology. Routledge.
MethodCombinatorial proof of the 6/7/8/9 distribution and Monte Carlo simulation in engine tests. Cross-checked against published standard accounts (Nielsen 2003; Rutt 1996)
Standard comparedFair three-coin model (each side 2 or 3): line values 6, 7, 8, 9 and probabilities 1/8, 3/8, 3/8, 1/8.
ResultDistribution checks passed (combinatorics and Monte Carlo).
StatusObsolete.
Yarrow stalks: initial verification
Date verified19 May 2026
SourceNielsen, B. (2003). A companion to Yi Jing numerology and cosmology. Routledge.
MethodMathematical proof of residue-to-line mapping and Monte Carlo simulation (16,000 trials). Cross-checked against published probability tables (Nielsen 2003; Rutt 1996)
Standard comparedLine distribution 1/16, 5/16, 7/16, 3/16; manual wizard accepts only 5/9 and 4/8 per round.
ResultDistribution and manual mapping checks passed.
StatusObsolete.
Changing-line mutation rules
Changing-line rules: Alfred Huang
Date verified22 Jun 2026
SourceHuang, A. (2010). The Complete I Ching (10th anniversary ed.). Inner Traditions. (Original work published 1998).
MethodAutomated comparison of the app's reduction rules against the published rule text, case by case.
Standard comparedThe 9 published rule cases for reducing changing lines to a single governing line text (0 through 6 changing lines, plus 用九/用六).
ResultFinal: 9/9 rule cases matched (100%).
StatusCurrent as of this date.
Changing-line rules: Zhu Xi (classical)
Date verified22 Jun 2026
SourceAdler, J. A. (2002). Introduction to the study of the classic of change (I-hsüeh ch'i-meng). Global Scholarly Publications.
MethodAutomated comparison of the app's classical reduction rules against the translated rule text.
Standard comparedThe published rule cases for reducing changing lines to a single governing line text (0 through 6 changing lines, plus 用九/用六).