{
  "story_id": "1034626d515ac1d1588401a84efcdaa5",
  "desk": "drm3",
  "revision": 1,
  "published_at": "2026-09-02T19:15:44.000Z",
  "content_hash": "2135bf5278fe8e720b3551c085a3fc25c61a01ac9f0f5f9654336684426fd8d4",
  "hash_basis": "sha256 over `headline\\ndek\\nprose`, plus `\\n` + the canonical citations JSON when any source is placed, plus `\\n#blog` for blogs",
  "basis": {
    "headline": "China Embassy in Cuba Accuses US Politicians of Unfounded Attacks on Cooperation",
    "dek": "China's embassy in Cuba criticizes US officials for attacking Beijing's aid to the island nation.",
    "prose": "The Chinese embassy in Cuba published a statement on Tuesday criticizing US politicians for attacking the cooperation between China and Cuba without foundation. [^1]\n\nNVIDIA's CUDA optimization walkthrough claims its techniques can reduce the runtime of a sample image-processing pipeline from 6.8 seconds to 23 milliseconds, a roughly 300x speedup. [^2]\n\nPresident Xi Jinping approved aid to Cuba in January that includes 80 million dollars in financial assistance and 60,000 tons of rice. [^3]\n\nThe Chinese embassy in Cuba accused US representatives of clinging to the 'old colonial dream' that America belongs to the United States and using blockades and sanctions to impose dominance. [^4]\n\nThe Chinese embassy in Cuba stated that US declarations are plagued by the obsolete Monroe Doctrine and Cold War biases. [^5]\n\nOn 2026-09-02, NVIDIA's stock rose 3.6% to $224.64, and the company's market capitalization reached $5.456 trillion. [^6]\n\nThe walkthrough says using NVIDIA's CUB library to replace custom kernels can accelerate median computation by over 2700x. [^7]\n\nThe walkthrough recommends debugging with ComputeSanitizer, using Nsight Systems with NVTX annotations, switching from cudaMalloc to pooled memory with pinned memory, and assigning separate CUDA streams to parallelize operations. [^8]",
    "cited": "[{\"statement\":\"The Chinese embassy in Cuba published a statement on Tuesday criticizing US politicians for attacking the cooperation between China and Cuba without foundation.\",\"source\":\"RPP\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-01T20:09:29.000Z\",\"publisher_count\":1,\"sources\":[\"RPP\"]},{\"statement\":\"NVIDIA's CUDA optimization walkthrough claims its techniques can reduce the runtime of a sample image-processing pipeline from 6.8 seconds to 23 milliseconds, a roughly 300x speedup.\",\"source\":\"Blockchain.News\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-02T19:15:44.000Z\",\"publisher_count\":1,\"sources\":[\"Blockchain.News\"]},{\"statement\":\"President Xi Jinping approved aid to Cuba in January that includes 80 million dollars in financial assistance and 60,000 tons of rice.\",\"source\":\"RPP\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-01T20:09:29.000Z\",\"publisher_count\":1,\"sources\":[\"RPP\"]},{\"statement\":\"The Chinese embassy in Cuba accused US representatives of clinging to the 'old colonial dream' that America belongs to the United States and using blockades and sanctions to impose dominance.\",\"source\":\"RPP\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-01T20:09:29.000Z\",\"publisher_count\":1,\"sources\":[\"RPP\"]},{\"statement\":\"The Chinese embassy in Cuba stated that US declarations are plagued by the obsolete Monroe Doctrine and Cold War biases.\",\"source\":\"RPP\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-01T20:09:29.000Z\",\"publisher_count\":1,\"sources\":[\"RPP\"]},{\"statement\":\"On 2026-09-02, NVIDIA's stock rose 3.6% to $224.64, and the company's market capitalization reached $5.456 trillion.\",\"source\":\"Blockchain.News\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-02T19:15:44.000Z\",\"publisher_count\":1,\"sources\":[\"Blockchain.News\"]},{\"statement\":\"The walkthrough says using NVIDIA's CUB library to replace custom kernels can accelerate median computation by over 2700x.\",\"source\":\"Blockchain.News\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-02T19:15:44.000Z\",\"publisher_count\":1,\"sources\":[\"Blockchain.News\"]},{\"statement\":\"The walkthrough recommends debugging with ComputeSanitizer, using Nsight Systems with NVTX annotations, switching from cudaMalloc to pooled memory with pinned memory, and assigning separate CUDA streams to parallelize operations.\",\"source\":\"Blockchain.News\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-02T19:15:44.000Z\",\"publisher_count\":1,\"sources\":[\"Blockchain.News\"]}]",
    "kind": "news"
  },
  "receipt_verify": "Ed25519 over the dot-joined string `slice_hash.cursor_from.cursor_to.view.view_version.row_count`; public_key and sig are base64url of the raw 32-byte key / 64-byte signature",
  "receipt": null,
  "receipt_note": "this revision predates receipt-keeping (before v0.37.0); the filed row lives in the record",
  "generation_chain": {
    "wire": {
      "stream": "fountain_news",
      "story_id": "dbd6e2594523923f3f0f9cd4d47a5e93",
      "thread_id": "3168ca4310be022d6be347e2f17a298d",
      "thread_label": "Cuba",
      "novelty": "UPDATE",
      "content_hash": "6525ae458c9d4aa197896afe39d1862f6433de664548fbbd1079853659f829a0",
      "last_published_at": "2026-09-02T19:15:44.000Z",
      "read_receipt": {
        "slice_hash": "11220e4dbf5190921f107dbdea6d99cd844703ff4eef74569640e84ea83ced60",
        "cursor_from": "eyJ0cyI6IjIwMjYtMDktMDJUMTc6NDQ6NDkuMDAwMDAwWiIsImlkIjoiMzY4OTUzMTNmMmQ0NTU3Zjk3Nzk4NTU5NDE1MWQ0OTYiLCJ2IjoiMSJ9",
        "cursor_to": "eyJ0cyI6IjIwMjYtMDktMDJUMTk6NDU6MTcuMDAwMDAwWiIsImlkIjoiMjc4NjE2ZTUxYmJmNDhkYmNlNzZjNjhlYmMxM2E2NmUiLCJ2IjoiMSJ9",
        "view": "v_fountain_news",
        "view_version": "1",
        "row_count": 100,
        "window_days": 3,
        "bytes_scanned": 10113494,
        "credits": 8,
        "price_per_100_rows": 8,
        "sig": "TfMTRUXpx7CzBxHaDv5ngbDuMNWmGAy2xiFXiaO_Paus3_lE3iKiHphYPVaT8Ac2h-vl_QwA11jHegTeg3YTCA",
        "public_key": "bMUigy8O0jOnBxQ4Sc-5lwhIZ8LQVAhxMbR7qESVuUE",
        "signer_path": "lakehouse/data-extract/v1",
        "alg": "Ed25519",
        "signed": true
      }
    },
    "written_at": "2026-09-03T00:46:03.212Z"
  },
  "cited_facts": [
    {
      "statement": "The Chinese embassy in Cuba published a statement on Tuesday criticizing US politicians for attacking the cooperation between China and Cuba without foundation.",
      "source": "RPP",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-01T20:09:29.000Z",
      "publisher_count": 1,
      "sources": [
        "RPP"
      ]
    },
    {
      "statement": "NVIDIA's CUDA optimization walkthrough claims its techniques can reduce the runtime of a sample image-processing pipeline from 6.8 seconds to 23 milliseconds, a roughly 300x speedup.",
      "source": "Blockchain.News",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-02T19:15:44.000Z",
      "publisher_count": 1,
      "sources": [
        "Blockchain.News"
      ]
    },
    {
      "statement": "President Xi Jinping approved aid to Cuba in January that includes 80 million dollars in financial assistance and 60,000 tons of rice.",
      "source": "RPP",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-01T20:09:29.000Z",
      "publisher_count": 1,
      "sources": [
        "RPP"
      ]
    },
    {
      "statement": "The Chinese embassy in Cuba accused US representatives of clinging to the 'old colonial dream' that America belongs to the United States and using blockades and sanctions to impose dominance.",
      "source": "RPP",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-01T20:09:29.000Z",
      "publisher_count": 1,
      "sources": [
        "RPP"
      ]
    },
    {
      "statement": "The Chinese embassy in Cuba stated that US declarations are plagued by the obsolete Monroe Doctrine and Cold War biases.",
      "source": "RPP",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-01T20:09:29.000Z",
      "publisher_count": 1,
      "sources": [
        "RPP"
      ]
    },
    {
      "statement": "On 2026-09-02, NVIDIA's stock rose 3.6% to $224.64, and the company's market capitalization reached $5.456 trillion.",
      "source": "Blockchain.News",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-02T19:15:44.000Z",
      "publisher_count": 1,
      "sources": [
        "Blockchain.News"
      ]
    },
    {
      "statement": "The walkthrough says using NVIDIA's CUB library to replace custom kernels can accelerate median computation by over 2700x.",
      "source": "Blockchain.News",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-02T19:15:44.000Z",
      "publisher_count": 1,
      "sources": [
        "Blockchain.News"
      ]
    },
    {
      "statement": "The walkthrough recommends debugging with ComputeSanitizer, using Nsight Systems with NVTX annotations, switching from cudaMalloc to pooled memory with pinned memory, and assigning separate CUDA streams to parallelize operations.",
      "source": "Blockchain.News",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-02T19:15:44.000Z",
      "publisher_count": 1,
      "sources": [
        "Blockchain.News"
      ]
    }
  ],
  "note": "A signature proves who filed this and that it has not changed since. It never makes a claim true."
}