Evidence row 1731339

What was observed

{
  "count": 13,
  "tools": [
    {
      "description": "Look up an AI agent on Robinhood Chain by ERC-8004 agent ID, wallet address or name: its owner and agent wallet, Fivebar Score (as a seller: how many independent operators pay it, with bundled buyer wallets counted once; as a buyer: how many real sellers it pays; 'not scored yet' with progress when the evidence is thin, never a 0), screened x402 record (passed, not counted yet, removed for wash patterns), flags and clusters. Use before paying or trusting an agent.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "query": {
            "description": "Agent ID (e.g. 7622), wallet address or name",
            "type": "string"
          }
        },
        "required": [
          "query"
        ],
        "type": "object"
      },
      "name": "agent_lookup"
    },
    {
      "description": "Before paying an x402 seller on Robinhood Chain, check its address against Fivebar's wash screen: whether it's among the sellers whose payments passed in the last 24 hours, its buyers and volume, and its agent record if it's a registered agent.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "address": {
            "type": "string"
          }
        },
        "required": [
          "address"
        ],
        "type": "object"
      },
      "name": "check_seller"
    },
    {
      "description": "ETH price in USD on Robinhood Chain (Chainlink feed, or the deepest WETH/USDG pool if the feed is unavailable).",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "eth_price"
    },
    {
      "description": "One Hyperliquid perpetual market by coin (e.g. BTC, ETH, HYPE): mark and oracle price, 24h change, funding, open interest, volume and max leverage.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "coin": {
            "type": "string"
          }
        },
        "required": [
          "coin"
        ],
        "type": "object"
      },
      "name": "perp_quote"
    },
    {
      "description": "Perpetual futures markets on Hyperliquid: mark price, 24h change, funding (hourly and yearly), open interest, 24h volume and max leverage. Sort by volume, open interest or funding; filter by coin.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "limit": {
            "description": "Default 20, max 100",
            "type": "number"
          },
          "query": {
            "description": "Coin, e.g. BTC",
            "type": "string"
          },
          "sort": {
            "description": "Default volume",
            "enum": [
              "volume",
              "openInterest",
              "funding"
            ],
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "perps_markets"
    },
    {
      "description": "Price of a Robinhood stock token on Robinhood Chain, by symbol (e.g. AAPL) or token address: the Chainlink feed price per token (dividends and splits included through the multiplier), how fresh it is, the on-chain DEX price where a Uniswap pool exists, and which sessions it trades in. Equity feeds follow US market hours 24/5 and hold their last price when markets are closed.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "symbol": {
            "description": "Ticker like AAPL, or the token address",
            "type": "string"
          }
        },
        "required": [
          "symbol"
        ],
        "type": "object"
      },
      "name": "stock_quote"
    },
    {
      "description": "List the tokenized stocks Robinhood issues on Robinhood Chain (about 100: AAPL, TSLA, NVDA...): symbol, name, token address, shares-per-token multiplier, which trading sessions they trade in, and whether a Chainlink price feed exists. Filter with query (symbol or name).",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "limit": {
            "description": "Default 200",
            "type": "number"
          },
          "query": {
            "description": "Part of a symbol or company name, e.g. 'NVDA' or 'apple'",
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "stocks_list"
    },
    {
      "description": "Build a swap for your own wallet to sign and send, on Robinhood Chain, Base, Ethereum, Arbitrum or Solana. Returns a firm quote (amount out, minimum, every fee) and the unsigned transactions in order. EVM chains: an exact-amount approval when needed, then the swap. Solana: one versioned transaction (base64) your wallet pays for and signs. Fivebar's 0.5% fee is paid inside the swap; Fivebar never sees your keys or holds your funds. Wallets on the US sanctions list are refused. xStocks are coming soon.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "amount": {
            "description": "How much of the sell token, in whole units, e.g. '100' or '0.25'",
            "type": "string"
          },
          "buy": {
            "description": "Token to buy, same forms as sell",
            "type": "string"
          },
          "chain": {
            "description": "Default robinhood (solana when given Solana tokens)",
            "enum": [
              "robinhood",
              "solana",
              "base",
              "ethereum",
              "arbitrum"
            ],
            "type": "string"
          },
          "sell": {
            "description": "Token to sell: ETH, WETH, USDG (Robinhood Chain), USDC or USDT (Base, Ethereum, Arbitrum), SOL, USDC, USDT or a mint (Solana), or a token address",
            "type": "string"
          },
          "slippage_pct": {
            "description": "Max slippage in percent, default 1",
            "type": "number"
          },
          "taker": {
            "description": "Your wallet address (0x..., or a Solana wallet): it signs and sends the transactions and receives the tokens",
            "type": "string"
          }
        },
        "required": [
          "sell",
          "buy",
          "amount",
          "taker"
        ],
        "type": "object"
      },
      "name": "swap_build"
    },
    {
      "description": "What swapping one token for another would give right now, on Robinhood Chain (default), Solana (SOL, USDC, USDT and memecoins by mint address; picked automatically for those), Base, Ethereum or Arbitrum (ETH, WETH, USDC, USDT or a token address; pass chain). EVM chains: the best route across Uniswap v2/v3/v4, PancakeSwap, SushiSwap, Aerodrome, Curve and other DEXes. Solana: the best route across Solana DEXes. Routed by 0x, with the amount out and the minimum after slippage, the USD value, and every fee shown separately (Fivebar's 0.5%, the router's fee where it applies, and network gas). Flags token taxes and, if you pass your wallet as taker, a missing balance or approval. xStocks are coming soon: use stock_quote for their prices. Quote only: nothing is signed or sent; to swap, use swap_build.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "amount": {
            "description": "How much of the sell token, in whole units, e.g. '100' or '0.25'",
            "type": "string"
          },
          "buy": {
            "description": "Token to buy, same forms as sell",
            "type": "string"
          },
          "chain": {
            "description": "Default robinhood (solana when given Solana tokens)",
            "enum": [
              "robinhood",
              "solana",
              "base",
              "ethereum",
              "arbitrum"
            ],
            "type": "string"
          },
          "sell": {
            "description": "Token to sell. Robinhood Chain: ETH, USDG, WETH or a token address. Solana: SOL, USDC, USDT or a mint address",
            "type": "string"
          },
          "slippage_pct": {
            "description": "Max slippage in percent, default 1",
            "type": "number"
          },
          "taker": {
            "description": "Optional: the wallet that would swap (0x address, or a Solana wallet on solana)",
            "type": "string"
          }
        },
        "required": [
          "sell",
          "buy",
          "amount"
        ],
        "type": "object"
      },
      "name": "swap_quote"
    },
    {
      "description": "Price and market cap of any token by its contract address. A 0x address is read on Robinhood Chain by default (Uniswap v3 and v4 pools; when the best pool is thin, under $2,000 in range, or missing, the price comes from a $10 buy routed by 0x and a warning says so); pass chain base, ethereum or arbitrum for those chains. A Solana mint is priced from a small USDC buy routed across Solana DEXes.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "address": {
            "description": "Token contract address (0x...) or a Solana mint",
            "type": "string"
          },
          "chain": {
            "description": "For 0x addresses: default robinhood",
            "enum": [
              "robinhood",
              "base",
              "ethereum",
              "arbitrum",
              "solana"
            ],
            "type": "string"
          }
        },
        "required": [
          "address"
        ],
        "type": "object"
      },
      "name": "token_quote"
    },
    {
      "description": "What could go wrong buying a token, by contract address, on Solana, Robinhood Chain, Base, Ethereum or Arbitrum. Solana: whether someone can still mint more or freeze holders, Token-2022 traps (transfer fees, a permanent delegate, transfer hooks), and how concentrated the top holders are. EVM: buy and sell taxes and whether the contract still has an owner. Both: a $100 buy-then-sell test through the router (can you sell it, and what's lost). Returns a verdict (high, caution or low) and the reasons. Not a guarantee.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "address": {
            "description": "The token's contract address (0x...) or Solana mint",
            "type": "string"
          },
          "chain": {
            "description": "Default robinhood for 0x addresses, solana for mints",
            "enum": [
              "robinhood",
              "solana",
              "base",
              "ethereum",
              "arbitrum"
            ],
            "type": "string"
          }
        },
        "required": [
          "address"
        ],
        "type": "object"
      },
      "name": "token_risk"
    },
    {
      "description": "Every token a wallet holds, with USD values, across Robinhood Chain, Base, Arbitrum and Ethereum for a 0x address (or one chain with chain), or on Solana for a Solana address. Includes ETH or SOL, stablecoins, Robinhood stock tokens and memecoins. Values: $1 for stablecoins, the ETH price for ETH and WETH, Chainlink for stock tokens, Uniswap pools on Robinhood Chain (a router buy when the pool is thin), a small buy routed by 0x elsewhere. The biggest positions carry a quick risk verdict (run token_risk for the full check). Tokens that look like airdropped spam are hidden and counted; tokens with no route to sell are listed apart. If the router is busy, a holding is valued from its last good quote (at most 15 minutes old) and marked priceAsOf.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {
          "address": {
            "description": "Wallet address: 0x... or a Solana wallet",
            "type": "string"
          },
          "chain": {
            "description": "Default: all four EVM chains for a 0x address, solana for a Solana address",
            "enum": [
              "all",
              "robinhood",
              "base",
              "arbitrum",
              "ethereum",
              "solana"
            ],
            "type": "string"
          }
        },
        "required": [
          "address"
        ],
        "type": "object"
      },
      "name": "wallet_holdings"
    },
    {
      "description": "Fivebar's index of x402 payments (USDG transferWithAuthorization) on Robinhood Chain: the last 24 hours and recent days, screened before they count. Volume that doesn't pass is split two ways: flaggedUsd shows a wash pattern (a seller paying itself, circular payments, two wallets paying 90%+ of a seller); tooFewBuyersUsd only went to sellers with under 10 distinct buyers, which isn't evidence of washing, just not enough to judge yet. topSellers lists sellers that passed. Updated every 3 hours.",
      "inputSchema": {
        "additionalProperties": false,
        "properties": {},
        "type": "object"
      },
      "name": "x402_stats"
    }
  ]
}

What the leaf hashes

{"body":"dd287480eee965be2807bce341585fb5d7ccfb96e83e1bc95f868b28dc6d9590","id":1731339,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793501251181816,"prev":null,"subject":"4c9706b8-53f8-4af5-8bd5-5a617cf4de87","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-01 (302406 rows).

1. 0xfbe5484c75d63f31b2167ee2953dce9317aa08be22c31c36be2f5ad1c745ea95
2. 0x0c0f3a74715bf82219b14111da0808c5c555df7941cbe88fe22b3f89f2b0d3d8
3. 0xc2e630140bf7a424ea0c7422470bf78e685b757a22e670ce3602de581f671f2c
4. 0xe245996763be86ec48a26447f46ee6eb266f6ed589961d561ec7375ae1a97e08
5. 0x50946e38faf4a0fb9771904d675d8b78846764209196ea5652e1f7f9ca10b4c8
6. 0x9fa9bca1cca5471b7058cdd35e91f5d370fdf8a741275eb28d4f28b11fe4d96e
7. 0x02a668a35e3d3e2822b14220f9be8747e21c9138bb020195187a247fb6d4666d
8. 0xeaee40a105e3f3dbe46e61524998ea1cbb5affd5fde8e6a10887346533b95283
9. 0x714a09af8763b8089ad500eeafcc736bbe188abde5a77950e18548d59436ce89
10. 0x977747cece4a487d43c02e49307f6e43c04f1cd4203ab627c2dca84e7878cdcb
11. 0x7853a7e4727bd0645c5e503374a3c4c03e08bf484dc085b7ab59e561c342494e
12. 0xdd6fd2d3474b1652642889f218206189aa3c852f3ef47e11d3a4bd68c1139aab
13. 0xf8b9b78839288f6f3c2a097f49df191b3fb6db46d1902b4044f5d4ee3643c368
14. 0x7cd72adb87b8751bf15c5933b0cfda4c062b8aa62aa82c7e8571c6aa0cc82204
15. 0xf7af9137c03da92bdd37d086da37554097bcd1fce016f93f2e66d18b71970c5d

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90