Evidence row 522698

What was observed

{
  "count": 4,
  "tools": [
    {
      "description": "AI products FalcoScan has verified as shut down or acquired, each with a published source: what happened, the year, the buyer and the market. Filter by year, buyer or market. Up to 25 rows per call, newest first.",
      "inputSchema": {
        "properties": {
          "buyer": {
            "description": "Acquiring company, e.g. \"NVIDIA\".",
            "type": "string"
          },
          "market": {
            "description": "Market name or slug, e.g. \"Coding\" or \"search-seo\".",
            "type": "string"
          },
          "year": {
            "description": "Year it shut down or was acquired, e.g. 2025.",
            "type": "number"
          }
        },
        "type": "object"
      },
      "name": "ai_graveyard"
    },
    {
      "description": "Every AI market FalcoScan scores, with its public averages (opportunity, saturation, wrapper share, heat), how many products in it are operating, and a link to its market page.",
      "inputSchema": {
        "properties": {},
        "type": "object"
      },
      "name": "list_markets"
    },
    {
      "description": "Look up an AI product on FalcoScan by name or website. Returns up to 5 matching products, each with its market, whether it is operating, shut down or acquired (with buyer, year and a source), opportunity, saturation and wrapper risk bands, pricing type, free tier, API, founding year, headquarters, website and a FalcoScan link to cite.",
      "inputSchema": {
        "properties": {
          "name": {
            "description": "Product name, e.g. \"Cursor\".",
            "type": "string"
          },
          "url": {
            "description": "Product website, e.g. \"cursor.com\". Give a name, a url or both.",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "lookup_product"
    },
    {
      "description": "One AI market: how many products are operating, its public averages, how many of its products shut down or were acquired, and its top 10 operating products in the order its FalcoScan market page lists them, with bands.",
      "inputSchema": {
        "properties": {
          "market": {
            "description": "Market name or slug, e.g. \"Healthcare\" or \"human-resources\".",
            "type": "string"
          }
        },
        "required": [
          "market"
        ],
        "type": "object"
      },
      "name": "market_overview"
    }
  ]
}

What the leaf hashes

{"body":"b5c64d20cecfb060281804aaa7d344baa51b193c870a755923da5e7a60025681","id":522698,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793123889286262,"prev":null,"subject":"1da80e98-c908-4d6b-a6f9-0adf6cdf7e08","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0xcadfa7168494f897c3366ade4cde8bccaa03222732a869669b9313acc5ddcb29
2. 0xf9650ba330ac3d9a0d14a73fe60ea79ae44b240da203edd7f4b0f8e130e4b0dd
3. 0xebb56c75be5571b8fbb1d47a11211a20fa611ec006b131da2005f099225b6ea7
4. 0x02149dddc81d71a0267f47f230e3d2f8588257673f184b5ba075cfe88bb5743d
5. 0x0aa36b5b18109ca3d4a59ed59e234dd95b6292f3da546c0cc6d39ebec3930b7f
6. 0x8d30acf99133572a70a6c56ea1253d6ba4eba2d3db7a2a24deaf9e1ecfa152e6
7. 0xfb86e19dfd38d090b078c439227058bc9ebbbeff0dbda2c52df239a744485ff7
8. 0x3bfb1949e39279a57d9f933219fa117bb50f269c6f3a45d35a425e01ef848b85
9. 0xc1780c83c076429f8f0f60eb073c9699f33b3d4376bca4b6108787068a1f5567
10. 0x5d474dbd48c9c0892209bdbe900f82ac004a9acdaec1f61fadcad5115a3a2ca1
11. 0x95fd8dbb624ecc6822c359ba43d046675a49c3d9c33da7908f9d847fea4eb0f8
12. 0x7142f07ffeddbd14ceabecb9ab27a468e9ab58a2fca5472c5c6a93f3e98f173e
13. 0x938752e9acd199cd15f468392bc2dd8eefc52293e7144e30b87b241ca6b2513b
14. 0xcc49fd573532e5a29f5be4033f62a2eff71456c020bd2258312b98e95cfe301e
15. 0x969cd44e5a4e8dc3110540398fbf689659eb51df735c1cda5d8f021ef9ff5683
16. 0xa94627de1af0e823832e05a9069b304ecccb8c0cdb8f9cfc4f2039bfb9799dc5
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4