Evidence row 1262745

Observed 30 Oct 2026, 18:39 UTC, by sync.x402_bazaar/1.

Kind: listing
About: source_record x402_bazaar:https://base-token-check.vercel.app/email
Recorded: 30 Oct 2026, 18:39 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: 5988e90508c911b586e306334ff5a54756ee2725a80cf9c1c873da5d6716a658
Leaf: 0x715b877396eadc708feb7228fd8dcf8b1a961e62c5b488d21fb96df16a2e1ed9

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://base-token-check.vercel.app/email"
    ]
  ],
  "name": "Email Address Check",
  "owner_address": "0x5498b0aa90cd56f8962cbd136df3d3769c85f149",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x5498b0Aa90cd56F8962CBd136DF3D3769C85f149",
        "scheme": "exact"
      }
    ],
    "description": "Check an email address before sending: RFC syntax and normalisation, live DNS (domain exists, MX records, accepts mail, null MX), disposable/throwaway domain and role-account (info@, support@) flags. No SMTP probing. For lead-gen, signup and outreach agents.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "email": "support@github.com"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "accepts_mail": true,
              "disclaimer": "Syntax checked with email-validator 2.3.0; MX/A records resolved live via DNS at request time; disposable list from the community disposable-email-domains project. 'accepts_mail' means DNS routes mail to the domain (MX records, or its A/AAAA address when there is no MX: 'implicit_mx'); MX hosts and mailboxes are not probed, so the address may still not exist.",
              "disposable_domain": false,
              "domain": "github.com",
              "domain_exists": true,
              "implicit_mx": false,
              "input": "support@github.com",
              "local_part": "support",
              "mx_records": [
                {
                  "host": "github-com.mail.protection.outlook.com",
                  "priority": 0
                }
              ],
              "normalized": "support@github.com",
              "null_mx": false,
              "role_account": true,
              "valid_syntax": true
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "email": {
                      "description": "Email address to check",
                      "maxLength": 320,
                      "minLength": 3,
                      "title": "Email",
                      "type": "string"
                    }
                  },
                  "required": [
                    "email"
                  ],
                  "title": "EmailRequest",
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-30T09:04:36.805Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-30T09:04:36.69Z"
    },
    "resource": "https://base-token-check.vercel.app/email",
    "serviceName": "Email Address Check",
    "tags": [
      "email",
      "validation",
      "mx",
      "disposable",
      "leads"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Check an email address before sending: RFC syntax and normalisation, live DNS (domain exists, MX records, accepts mail, null MX), disposable/throwaway domain and role-account (info@, support@) flags. No SMTP probing. For lead-gen, signup and outreach agents."
}

What the leaf hashes

{"body":"5988e90508c911b586e306334ff5a54756ee2725a80cf9c1c873da5d6716a658","id":1262745,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793385585430290,"prev":null,"subject":"x402_bazaar:https://base-token-check.vercel.app/email","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-30 (243099 rows).

0x715bdbe9af5785352c5bd99212a2e7d38936026fbfe20557e44f591d0f5c3757
0x0d29d6aeb11c30c6270dc86faf369f49b5d6adc8094c7a61a9b78738d85e4976
0x81bda23959db30d463a12b3f4a883784dadb0f972fe6615a11754adadbc6502b
0x9ecada358d0896d4cb1ca80b61896d0419c01d727cd845955b3d491257982885
0xd5fea5b80c1acdd1c56513af960e34c12ccad5086261f2a6892a9a3f53cdd233
0xd18c3d99d1e025d901fcffda0e93356d9b617bf10420cfe8e6ad9ae8e0bec974
0xf68a13e66c13ce97e9485c6f20a8179aa70c508bd62cf04c4829e724a2df744b
0x84f6b884463673eeec443e43ad2a6fb716b721a7b9020d34976422d4b217046e
0x6c5a4d2cb9574e4929b9cd7ea6680e4039fa032b4236c30499df5ad46a2d03dc
0x685ce4ba43933210bf303048604bee90a71569166aae240eb98976982d4bfdf4
0x229e8fa8762efcb22073eaa521ca9fb0fdb077539f4ab99681d62bd6350e6fd1
0xead7b9b5ca26a82aafe5ba5c839f18ecb3ec6cb926cf44fbd987b4ff6db22ac6
0xc49b39d1d5f1a9f4fc18bb83adeb6cd4a85dbf836296581eb9e9e717cc889fd7
0x75bcbdd2a0d7acdea21f6011126339c8e33a476ec0a76842480cf5bf70db6a72
0xdf25f5d38e3fb54d3e66e3bf876db529f619041e0d21f0bc35b80003418e3d9c
0xdbaaffa44665d1fa60d33d2c4075bd87629b76d01a6ee63e621e78590303b56d
0xffe660edb9e5c6e3449a49454634c3e7b2f9fe703e5697f723b021735647ab7e
0x30a81d8fcef4e8f9e2877c62796cfc5612fc1b251127d531dee28f8dbd5c5147

Day root: 0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875
Chained: 0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822
Published: On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861

How to check it · This row as JSON