Evidence row 3959619

Observed 7 Nov 2026, 18:30 UTC, by sync.agentic_market/1.

Kind: listing
About: source_record agentic_market:tabularium-matt-3e0-workers-dev
Recorded: 7 Nov 2026, 18:30 UTC
Previous row: #3756280
Body SHA-256: dbd3237d170d51c10b1586e329f88b364d9963aa890dfdb9cf143751c6fa36e7
Leaf: 0xb101d40a415afe19d1717ac27053c90e793b4328e5e6f1ca102d0722a6fd698f

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://tabularium.matt-3e0.workers.dev/export"
    ],
    [
      "x402",
      "https://tabularium.matt-3e0.workers.dev/mcp"
    ],
    [
      "x402",
      "https://tabularium.matt-3e0.workers.dev/read"
    ],
    [
      "x402",
      "https://tabularium.matt-3e0.workers.dev/renew"
    ],
    [
      "x402",
      "https://tabularium.matt-3e0.workers.dev/snapshot/fetch"
    ],
    [
      "x402",
      "https://tabularium.matt-3e0.workers.dev/write"
    ]
  ],
  "name": "tabularium.matt-3e0.workers.dev",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453"
    ],
    "category": "",
    "description": "",
    "domain": "tabularium.matt-3e0.workers.dev",
    "endpoints": [
      {
        "description": "Agent memory: export the full signed history and current values of the paying wallet's persistent key-value store, for backup or proof. The export verifies offline against the public key in /menu, with no trust in the server. The optional since parameter returns only newer entries.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": 0,
            "group": "query",
            "name": "since",
            "required": false,
            "type": "number"
          }
        ],
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "49",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Tabularium",
        "tags": [
          "agent-memory",
          "storage",
          "verifiable",
          "hash-chain",
          "key-value"
        ],
        "url": "https://tabularium.matt-3e0.workers.dev/export"
      },
      {
        "description": "Agent memory: export the full signed history and current values of the paying wallet's persistent key-value store, for backup or proof. The export verifies offline against the public key in /menu, with no trust in the server. The optional since parameter returns only newer entries.",
        "method": "",
        "parameters": [],
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        },
        "serviceName": "",
        "tags": [],
        "url": "https://tabularium.matt-3e0.workers.dev/mcp#tabularium_export"
      },
      {
        "description": "Agent memory: read the latest value for a key from the paying wallet's persistent key-value store, with its signed hash-chain entry. Reads keep working through the 90-day grace period after the term ends. A missing key returns 404 and is not charged.",
        "method": "",
        "parameters": [],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        },
        "serviceName": "",
        "tags": [],
        "url": "https://tabularium.matt-3e0.workers.dev/mcp#tabularium_read"
      },
      {
        "description": "Agent memory: keep the paying wallet's persistent key-value store for 30 more days, counted from the later of now or its current expiry. A free pre-check rejects a wallet with no workspace before any charge.",
        "method": "",
        "parameters": [],
        "pricing": {
          "amount": "0.25",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        },
        "serviceName": "",
        "tags": [],
        "url": "https://tabularium.matt-3e0.workers.dev/mcp#tabularium_renew"
      },
      {
        "description": "Returns the page's readable text plus an Ed25519-signed record (final URL after redirects, fetch time, status, sha256 of the body and of the text) that verifies offline. Charged only for 2xx text pages; refused URLs cost nothing.",
        "method": "",
        "parameters": [],
        "pricing": {
          "amount": "0.005",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        },
        "serviceName": "",
        "tags": [],
        "url": "https://tabularium.matt-3e0.workers.dev/mcp#tabularium_snapshot_fetch"
      },
      {
        "description": "Agent memory: save a value under a key in a persistent key-value store owned by the paying wallet. The first write opens a 30-day workspace. Memory survives restarts, new machines and hand-offs between agents. Every write is hash-chained and signed (Ed25519), so the history verifies offline. Values up to 64 KB; failed writes are not charged.",
        "method": "",
        "parameters": [],
        "pricing": {
          "amount": "0.003",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        },
        "serviceName": "",
        "tags": [],
        "url": "https://tabularium.matt-3e0.workers.dev/mcp#tabularium_write"
      },
      {
        "description": "Agent memory: read the latest value for a key from the paying wallet's persistent key-value store, with its signed hash-chain entry. Reads keep working through the 90-day grace period after the term ends. A missing key returns 404 and is not charged.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "notes/today",
            "group": "query",
            "name": "key",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "68",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Tabularium",
        "tags": [
          "agent-memory",
          "storage",
          "verifiable",
          "hash-chain",
          "key-value"
        ],
        "url": "https://tabularium.matt-3e0.workers.dev/read"
      },
      {
        "description": "Extends the paying wallet's workspace by 30 days from the later of now or its expiry.",
        "method": "POST",
        "parameters": [],
        "pricing": {
          "amount": "0.25",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "8",
          "l30DaysUniquePayers": "2"
        },
        "serviceName": "Tabularium",
        "tags": [
          "agent-memory",
          "storage",
          "verifiable",
          "hash-chain",
          "key-value"
        ],
        "url": "https://tabularium.matt-3e0.workers.dev/renew"
      },
      {
        "description": "Returns the page's readable text plus an Ed25519-signed record (final URL after redirects, fetch time, status, sha256 of the body and of the text) that verifies offline. Charged only for 2xx text pages; refused URLs cost nothing.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "https://example.com/",
            "group": "body",
            "name": "url",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.005",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "1"
        },
        "serviceName": "Tabularium Snapshot",
        "tags": [
          "web-fetch",
          "scraping",
          "verifiable",
          "signed",
          "citations"
        ],
        "url": "https://tabularium.matt-3e0.workers.dev/snapshot/fetch"
      },
      {
        "description": "Agent memory: save a value under a key in a persistent key-value store owned by the paying wallet. The first write opens a 30-day workspace. Memory survives restarts, new machines and hand-offs between agents. Every write is hash-chained and signed (Ed25519), so the history verifies offline. Values up to 64 KB; failed writes are not charged.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "retry-7f3a",
            "group": "body",
            "name": "idempotency_key",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "notes/today",
            "group": "body",
            "name": "key",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "Met the supplier; follow up Friday.",
            "group": "body",
            "name": "value",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.003",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "103",
          "l30DaysUniquePayers": "8"
        },
        "serviceName": "Tabularium",
        "tags": [
          "agent-memory",
          "storage",
          "verifiable",
          "hash-chain",
          "key-value"
        ],
        "url": "https://tabularium.matt-3e0.workers.dev/write"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "tabularium-matt-3e0-workers-dev",
    "integrationType": "",
    "isNew": false,
    "name": "tabularium.matt-3e0.workers.dev",
    "networks": [
      "Base"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.054",
      "currency": "USDC",
      "maxAmount": "0.25",
      "minAmount": "0.002"
    },
    "provider": "tabularium.matt-3e0.workers.dev",
    "providerUrl": "",
    "serviceName": "Tabularium",
    "tags": [
      "agent-memory",
      "storage",
      "verifiable",
      "hash-chain",
      "key-value",
      "web-fetch",
      "scraping",
      "signed",
      "citations"
    ]
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"dbd3237d170d51c10b1586e329f88b364d9963aa890dfdb9cf143751c6fa36e7","id":3959619,"kind":"listing","method":"sync.agentic_market/1","observed_us":1794076214815726,"prev":3756280,"subject":"agentic_market:tabularium-matt-3e0-workers-dev","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-07 (195826 rows).

0xb1012b3109ab871869909c8cc5ff4db76d4f3cdee299d8ceb16de32b0c717d52
0x132d091d58f8146045a6c6828c1939bb4e5fb266e9484742a3777c1b71f4f9fd
0xf51f5917756b2e621bef2b3bd1f04f959df15ba0002a7be6a2a683819c138aad
0x2f1190b0030f3fa6307e7996f9334636665ed68218ef3b94738e7f0818d7476b
0xf23fd662a54932e660340727166387ab1386d29552b2030e53116b4f055a8714
0x06a61b9eedc0513924de2bc5cdbbe2955486cd59e5e343e7d2209ca52d4ef3d0
0xe4ad37dee124bbac9c0c8bbf6376938a5130fe0ef44711314263f2d0b842b03e
0x460018a041f5b5d72077c1ffb978ff0232d338987bb7a32ba38b465e079a34a9
0x7079a286dab4181152800de6bd8887649802794ab4bf8b078a45d372193d6d9a
0x5d682543ff1dcc3b8ea690b6e2c0f35ffbcb16fb2600200660f0f9937c4e43da
0xb918e07f663405790304887a6c06eac0e0c0d5b48693f00c81af0997f47f67c3
0xfc490f10297256f1dffccd6e4fa855d0725398203c90dd0a8a77405bdf014404
0xf4ed46d8eff25af1a9e80eed6f55719653e8cb1d0b480eb2d9009abe9c0a5315
0x6065413194326b10c0e957a6ed77fad045c76a708d9f5e291ca690223cf2d7ba
0x2afbeaef1e4de4b2a6d70326e3dc41f9f1c65d4fc46630d217fc932790b0680c
0x3235c8a33ac14441f1a12a6515f670286d48b48fa98eb1dce45d902e053abe01
0x9ea7c2ecc6985da4b761b0f9096b7858b3ac8e3e47717c3840537fb2ff31c6df

Day root: 0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d
Chained: 0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb
Published: On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa

How to check it · This row as JSON