XYPHERS CONTROL INFORMATION EVIDENCE MAP Article What Is a Bit of Foresight Worth? Read BOUNDARY.md is the preregistration of CAL-CEF-2: the notebook, stockpile, and feedback and erasure moves added to the CAL-CEF-1 archipelago, the derived predictions, fourteen acceptance gates with their check order, nine deliberately broken controls with their expected first failures, and the stated claims. It was frozen before any evaluator ran. RESULT.md records the single frozen execution: verdict, review chronology, file digests, toolchain, and the complete report. expected-report.txt is the report that run printed; compare your own run with it. Inspect and run source/xypher-control-information-proof/ is the dependency-free Rust verifier and the prospective Futuruna construction (xypher.runa). RUN.txt gives the commands and the expected result. Provenance BOUNDARY.md thaim commit 79d344024eb0169d4b458213936fc5cec8c476cd, research/physics/derivable/ xypher-control-information-thermodynamics-boundary.md RESULT.md thaim commit ed3eab52, research/physics/derivable/ xypher-control-information-thermodynamics-result.md source/ thaim commit 6b517442cc35d4721cdee72ad2998b31a825934a, research/physics/xypher-control-information-proof/ (Git tree 11b396bbccdffedc539860ea5bfc6616fe790bcf) These files are exact copies of the originals at those commits. README.txt, RUN.txt, and SHA256SUMS were written for this packet; expected-report.txt is copied from the report in RESULT.md section 3.1. Scope An exact finite construction, not a fitted simulation. No random seed, sampling, simulation length, tolerance, or floating-point acceptance path is involved. Established within the declared model: the instrumented archipelago satisfies the operational thermodynamic tests T1-T5 across a seven-case family at the temperature of its reservoir; the configuration law of CAL-CEF-1 is unchanged; a correct record of the held plan's destination is worth alpha ln 2 per bit, as the free-energy gap to a shuffled pairing of equal energy and as the equilibrium exchange constant K = N/(n_y b) of the feedback move; with a reservoir that doubles per packet, one bit of foresight trades evenly for one packet; erasing a uniform notebook costs alpha ln A; every net current vanishes at equilibrium. Open: driving the measure-harvest-erase cycle out of equilibrium to extract net work; noisy or partial records; contact between instrumented worlds; learning. Hashes SHA256SUMS covers this directory except the checksum file itself.