. . . . "The validation role is claimed here by a software agent executing in an ephemeral sandbox, on behalf of and at the direction of the human agent named in NP1. This is a weaker claim than independent human replication or continuous integration, both of which remain outstanding; see the unclaimed-credit assertions in NP2." . . . . "For each of the 44 declarations obtained by scanning the source for top-level theorem and def bindings, a '#print axioms Synthetic.' command was appended to a copy of the file and elaborated under Lean 4.32.0. All 44 reported; sorryAx occurred zero times in the output." . "Axiom dependency audit" . . "lean Tarski.lean; exit status 0; stdout and stderr empty. Toolchain commit 797c613eb9b6d4ec95db23e3e00af9ac6657f24b, x86_64-unknown-linux-gnu, Release build. Establishes that the result is not an artifact of a single compiler version." . "Compilation under an earlier toolchain" . "Lean 4.24.0" . . "lean Tarski.lean; exit status 0; stdout and stderr empty. Toolchain leanprover/lean4:v4.32.0, commit 8c9756b28d64dab099da31a4c09229a9e6a2ef35, x86_64-unknown-linux-gnu, Release build. This is the version pinned by the lean-toolchain file of the hosting repository." . "Compilation under the pinned toolchain" . "Lean 4.32.0" . . "2026-07-29"^^ . . "Tarski.lean compiles under Lean 4 with no errors and no unproved statements" . "PASS" . "The byte sequence identified by ISCC:KAC67GWDV372567ANMUX3VYVTO7YIYHV2AILIDWJV3VWCQK2KOB6QAY and SHA-256 1372181e2284465648cf15fdd9b7a761ceef9288224feccfd71fb63a5417bfd1 was submitted to the Lean 4 elaborator and kernel. The compiler exited with status 0 and emitted no diagnostics of any severity. An axiom audit over all 44 declarations in namespace Synthetic returned no dependency on sorryAx: 43 declarations depend only on the three standard Lean axioms propext, Classical.choice and Quot.sound, and Synthetic.construction_uniqueness depends on no axioms at all. The claim of zero sorry in the artifact's header comment is therefore confirmed, on two independent toolchain versions." . . . . . "2026-07-29"^^ . . "Retrieved copy of Tarski.lean" . . "Retrieved from the main branch; no commit was pinned at retrieval time, so re-verification requires re-checking the ISCC and SHA-256 recorded in NP1 before trusting this result against a later state of the branch." . . . . . . . . . "2026-07-29T00:00:00Z"^^ . . . . "2026-07-29T00:00:00Z"^^ . . . . "797c613eb9b6d4ec95db23e3e00af9ac6657f24b" . "Lean 4.24.0 (x86_64-unknown-linux-gnu)" . "4.24.0" . . . . "8c9756b28d64dab099da31a4c09229a9e6a2ef35" . "Lean 4.32.0 (x86_64-unknown-linux-gnu)" . "4.32.0" . . . . "2026-07-29T15:00:47Z"^^ . . . . . . "This record supersedes the statement in earlier drafts that verification-by-compilation was unclaimed; it does not supersede the requirement for independent replication." . "Tarski.lean: compilation verification under Lean 4.32.0 and 4.24.0" . . "RSA" . "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArujXziJVj9wv0856QcQukv3fw7UGog0oDe9ztQ79aozK0giP2f0DvLD1x87SX3o4W/NbRPI4UyMh8HF5NxKQzuo/sgXz96maOF2RyzJq6wa4PMUH7hVO5bB9KT8lmd9FVa9ZCi3aX47ScTAp3xdHwjCG8k+hNfBOMD9/8nxd70FHp55AwUurX4E/LlWKVTrJSPwtJoENaQz1uu5YPv0AdvBuMDcD7ZXMXE6CvO4yEvQamWctKDnwkb8s1L4e4jEWGurRiTSS/zi+Jff8R/c/TZA78JIxMhXJQp/HVOJRC7IJC9cujx/b3UFZbCHUqxWqvckiCxmP9GR9Z95McV780wIDAQAB" . "eMDXFadOqHjMhTZNn3myQj3YLd4Mbpzc0w42pkhUyP1mcVgjGszDbVPB8tGIX6/7/t8zjo5nuY2XF9cxAGK6V0Io/BVn2dmQs6vJfQkuLNPaaJ62t3eujVFQG8Vfx8/P3F+CdFOh1LBc6LTVI+GuTosqWBRvWycYw3KtLtAHu33mLJUMe3Gu4FHDZIlC7Yz3NweQG8jjLqxx+fKgz8YYk1X1mgQlN6PoJgKNicVHYeg95LcskuSL/Jrhx6tfWFXk0Pnkkk2Z3KySabFn6EWBwxaFO95I2N6Txj/ACpOi3qIAuGHTzqqPA8DKOL1l+aAp7LMWct/ZXOvNF6bJbTUDKw==" . . .