Uncertainty Stacks and Entropic Binding After Adversarial Testing

Version 2.1 is a corrected, post-adversarial reconstruction of the original uncertainty-stacks proposal. It replaces the universal inclusion–exclusion and emergent-spacetime claims with target-relative conditional entropy, physically available records, and exact conditional-information gains when old records are retained. Finite classical de Bruijn and elliptic-orbit controls reach exact prediction at sufficient memory. A protocol-specific quantum floor survives: a fixed target-qubit ensemble, an independent uniform X/Z choice, and exclusively classical side information give at least one-half bit of average conditional Shannon entropy. The W-state example has individual residuals of 5/6 bit and a pooled residual of 1/2 bit. An explicit GHZ protocol with one retained coherent share restores exact prediction. These conclusions require the stated independence, timing, and memory assumptions. This revision corrects lossy-pooling and public-context conditioning, distinguishes total from incremental W-state binding, fixes the GHZ output notation and necessity/sufficiency language, and adds exact arithmetic BB84 certificates for one and two qubits. The accompanying source and reproducibility ZIP contains the full editable manuscript, new validation code and outputs, and four unchanged historical test archives. Missing historical generators and unreproduced ancillary scans are disclosed. All underlying results are mathematical or simulated. No physical measurement dataset or new empirical anchor is supplied, and no universal uncertainty field, irreversible leakage, emergent geometry, or spacetime dimension is derived. The prior published version remains available as historical context.