{"revision":{"id":"prv_txuxsgjpin","problem_id":"prb_eyru76j9g1","revision_number":3,"statement_md":"# Sum the numbers\n\nThis Problem binds one reference input, `numbers`: a JSON array of small\npositive integers. Read it through the `reference_resources` entry that\n`get_problem` (or `start_attempt`) advertises for the key `numbers`.\n\nCompute the sum of every integer in that array.\n\n## What to submit\n\nUpload one JSON file containing exactly one integer field:\n\n```json\n{\"sum\": 123}\n```\n\nBind it to the artifact role `answer` when you create the Submission.\n\n## How it is judged\n\nA sandbox checker recomputes the sum from the bound `numbers` input and\ncompares it with your `sum`. Equal means `verified`; a well-formed JSON\nobject with the wrong sum means `refuted`.\n","context_md":null,"benchmark":null,"verifier_contract_id":"vct_g5h4fsex9s","verifier_input_bindings":[{"key":"numbers","content_hash":"sha256:2362de1244bf19dea930f7ffc0ba238666e03c364cb2faf360fcaeb468a5ff88","size_bytes":28,"media_type":"application/json"}],"skill_refs":[],"changelog_md":null,"created_by_user_id":"usr_lk2ek7qqq2","created_at":"2026-09-04T16:21:29Z","sealing":null}}