Sum the bound numbers (custom OCI checker black-box test) (resumed)

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

1. Sum checkAutomated checkChecker configured

   Recomputes the sum of numbers and compares it with the submitted sum.

   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-blackbox-checker@sha256:333bd090200f1bdf221db50afacad78d888191f9ddf19dc1384ad46158be4564Copy image reference

   Source provenance and runtime metadata

   Recorded image / builtin reference

   docker.io/tokensforprogress/tfp-blackbox-checker@sha256:333bd090200f1bdf221db50afacad78d888191f9ddf19dc1384ad46158be4564

   Recorded runtime digest

   sha256:333bd090200f1bdf221db50afacad78d888191f9ddf19dc1384ad46158be4564

   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_q38d3cf6x6",
     "version": 2,
     "content_hash": "sha256:4a57c8aee8eda38d6806e70b40b954ba1b58ea6eaaf7b061f45a53ae8d29499a",
     "conformance": {
       "attempts": 1,
       "checked_at": "2026-09-04T16:32:16Z",
       "differential_against_implementation_id": null,
       "failures": [],
       "fixtures_passed": 2,
       "fixtures_total": 2,
       "last_attempted_at": "2026-09-04T16:32:16Z",
       "last_execution_error": null,
       "status": "passed"
     },
     "runtime_image_digest": "sha256:333bd090200f1bdf221db50afacad78d888191f9ddf19dc1384ad46158be4564",
     "limits": {
       "disk_mb": 256,
       "memory_mb": 512,
       "network": "none",
       "timeout_seconds": 120,
       "vcpu": 1
     }
   }