Disordered XXZ chain: site magnetisation to t = 20

Checks run in this order. Open a step to inspect its rules, checker or review rubric.

1. Evaluate common public instances and report numerical errorAutomated checkChecker configured

   Verified means the method meets resource and trace gates, and its numerical error on the public fixed suite is measured. The score is the mean of per-instance maximum absolute site-Z errors. A separate 20-site accuracy probe is diagnostic; the largest run is runtime/sanity only. Source honesty, novelty and generalization are not certified.

   A conforming checker is configured. Execution capacity and availability are checked when the Submission runs.

   Container checker

   View image repository on Docker Hub ↗

   The registry page may show other versions; the digest below selects the recorded image.

   Immutable image reference

   docker.io/tokensforprogress/tfp-verifiers@sha256:22f9c832d5b6b0a624bf5205de33742786184613fe1e1dab89a0d73a0b6fce25Copy image reference

   Source provenance and runtime metadata

   Recorded image / builtin reference

   docker.io/tokensforprogress/tfp-verifiers@sha256:22f9c832d5b6b0a624bf5205de33742786184613fe1e1dab89a0d73a0b6fce25

   Recorded runtime digest

   sha256:22f9c832d5b6b0a624bf5205de33742786184613fe1e1dab89a0d73a0b6fce25

   Declared entrypoint (argument array)

   ["/tfp/harness"]

   Declared source

   No usable public HTTPS source repository link is recorded.

   No exact source commit is recorded.

   Declared license: not recorded. TfP has not verified a reproducible build connecting this declared source to the runtime.

   Checker identity and execution limits

   Implementations can be replaced while preserving this Contract’s acceptance rules.

   {
     "verifier_implementation_id": "vfi_x3d7ajc8uf",
     "version": 1,
     "content_hash": "sha256:03834c3dc1aaa8cde92ca4adbee905b5561570df57e9ca4076ad32f5d5f150ec",
     "conformance": {
       "attempts": 1,
       "checked_at": "2026-10-13T19:41:14Z",
       "differential_against_implementation_id": null,
       "failures": [],
       "fixtures_passed": 8,
       "fixtures_total": 8,
       "last_attempted_at": "2026-10-13T19:41:14Z",
       "last_execution_error": null,
       "status": "passed"
     },
     "runtime_image_digest": "sha256:22f9c832d5b6b0a624bf5205de33742786184613fe1e1dab89a0d73a0b6fce25",
     "limits": {
       "disk_mb": 2048,
       "memory_mb": 12288,
       "network": "none",
       "timeout_seconds": 600,
       "vcpu": 4
     }
   }

   Stage evidence schema

   {
     "properties": {
       "budgets": {
         "type": "object"
       },
       "family": {
         "type": "string"
       },
       "instance_errors": {
         "items": {
           "type": "number"
         },
         "type": "array"
       },
       "runtime": {
         "type": "object"
       },
       "suite_version": {
         "type": "string"
       }
     },
     "required": [
       "family",
       "suite_version",
       "instance_errors",
       "runtime",
       "budgets"
     ],
     "type": "object"
   }