← The evidence ledger
Evidence row 122256
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://tanod.dev/v1/email/verify
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- a38bbecbf3ae445a874a3ac466ead53f3d04215e35f29874f2861e6fc3bbf4d9
- Leaf
- 0x021f45d6419786b0c0e023322c18d3ae4803366521923bf57c781e0e911243a2
What was observed
{
"endpoints": [
[
"x402",
"https://tanod.dev/v1/email/verify"
]
],
"name": "Tanod dnspeek",
"owner_address": "0x593857a4a4f619543ea12394137c3004ce841720",
"raw": {
"accepts": [
{
"amount": "1000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
"scheme": "exact"
},
{
"amount": "1000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
"scheme": "exact"
},
{
"amount": "1000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "RMk9k3VC8dr4hhjgFh88rGhjAbzfBzHxJJ5n2fTcqus",
"scheme": "exact"
},
{
"amount": "1000000000000000",
"asset": "0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d",
"extra": {
"assetTransferMethod": "permit2",
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:56",
"payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
"scheme": "exact"
},
{
"amount": "1000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
"scheme": "exact"
},
{
"amount": "1000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "GatewayWalletBatched",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
"version": "1"
},
"maxTimeoutSeconds": 604900,
"network": "eip155:8453",
"payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
"scheme": "exact"
},
{
"amount": "1000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "GatewayWalletBatched",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
"version": "1"
},
"maxTimeoutSeconds": 604900,
"network": "eip155:137",
"payTo": "0x593857A4a4F619543ea12394137C3004ce841720",
"scheme": "exact"
}
],
"description": "Verify an email address: check its syntax and DNS (MX) to see whether it can receive mail, no SMTP. Input: email. Returns a verdict, MX hosts and disposable, role and free-provider flags. Use when an agent must decide whether an email address looks deliverable before sending or storing it.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"email": "postmaster@example.com"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"disposable": false,
"domain": "gmail.com",
"email": "someone@gmail.com",
"free_provider": true,
"has_mx": true,
"implicit_mx": false,
"local_part": "someone",
"mx_hosts": [
"gmail-smtp-in.l.google.com",
"alt1.gmail-smtp-in.l.google.com"
],
"normalized": "someone@gmail.com",
"notes": [
"DNS-only check: the mail server was not contacted, so mailbox existence is not verified"
],
"null_mx": false,
"reasons": [
"free_provider"
],
"role_account": false,
"smtp_checked": false,
"syntax_valid": true,
"verdict": "deliverable_likely"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"email": {
"description": "The email address to check.",
"maxLength": 320,
"minLength": 1,
"type": "string"
}
},
"required": [
"email"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"disposable": {
"type": "boolean"
},
"domain": {
"type": [
"string",
"null"
]
},
"email": {
"type": "string"
},
"free_provider": {
"type": "boolean"
},
"has_mx": {
"type": "boolean"
},
"implicit_mx": {
"type": "boolean"
},
"local_part": {
"type": [
"string",
"null"
]
},
"mx_hosts": {
"items": {
"type": "string"
},
"type": "array"
},
"normalized": {
"type": [
"string",
"null"
]
},
"notes": {
"type": "array"
},
"null_mx": {
"type": "boolean"
},
"reasons": {
"items": {
"type": "string"
},
"type": "array"
},
"role_account": {
"type": "boolean"
},
"smtp_checked": {
"type": "boolean"
},
"syntax_valid": {
"type": "boolean"
},
"verdict": {
"enum": [
"deliverable_likely",
"undeliverable",
"risky",
"unknown"
],
"type": "string"
}
},
"required": [
"email",
"normalized",
"syntax_valid",
"domain",
"has_mx",
"mx_hosts",
"null_mx",
"disposable",
"role_account",
"free_provider",
"verdict",
"reasons",
"smtp_checked"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
},
"builder-code": {
"info": {
"a": "bc_h7pxv14u"
},
"schema": {
"additionalProperties": false,
"properties": {
"a": {
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"s": {
"items": {
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"maxItems": 11,
"type": "array"
},
"w": {
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
}
},
"type": "object"
}
},
"erc20ApprovalGasSponsoring": {
"info": {
"description": "The facilitator accepts a raw signed approval transaction and will sponsor the gas fees.",
"version": "1"
},
"schema": {
"properties": {
"amount": {
"pattern": "^[0-9]+$",
"type": "string"
},
"asset": {
"pattern": "^0x[a-fA-F0-9]{40}$",
"type": "string"
},
"from": {
"pattern": "^0x[a-fA-F0-9]{40}$",
"type": "string"
},
"signedTransaction": {
"pattern": "^0x[a-fA-F0-9]+$",
"type": "string"
},
"spender": {
"pattern": "^0x[a-fA-F0-9]{40}$",
"type": "string"
},
"version": {
"pattern": "^[0-9]+(\\.[0-9]+)*$",
"type": "string"
}
},
"required": [
"from",
"asset",
"spender",
"amount",
"signedTransaction",
"version"
],
"type": "object"
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"properties": {
"id": {
"maxLength": 128,
"minLength": 16,
"pattern": "^[a-zA-Z0-9_-]+$",
"type": "string"
},
"required": {
"type": "boolean"
}
},
"required": [
"required"
],
"type": "object"
}
}
},
"iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791364949/bazaar-icons/d8143c9bc952f5cd.png",
"lastUpdated": "2026-10-25T16:22:34.673Z",
"quality": {
"l30DaysTotalCalls": 8,
"l30DaysUniquePayers": 5,
"lastCalledAt": "2026-10-25T16:22:33.832Z"
},
"resource": "https://tanod.dev/v1/email/verify",
"serviceName": "Tanod dnspeek",
"tags": [
"email-verification",
"email",
"validation",
"deliverability",
"dnspeek"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Verify an email address: check its syntax and DNS (MX) to see whether it can receive mail, no SMTP. Input: email. Returns a verdict, MX hosts and disposable, role and free-provider flags. Use when an agent must decide whether an email address looks deliverable before sending or storing it."
}What the leaf hashes
{"body":"a38bbecbf3ae445a874a3ac466ead53f3d04215e35f29874f2861e6fc3bbf4d9","id":122256,"kind":"listing","method":"baseline/1","observed_us":1793025621330503,"prev":null,"subject":"x402_bazaar:https://tanod.dev/v1/email/verify","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).
- 0x021ef937c14eb36175cefec1f89342675f9492a62253b7e9a2f4cca1b99a263b
- 0xa1dc27749213e0cf9bdb8720ea27a8fd3fcbe3707124c458556dc063e4c35c65
- 0x249f3010cb3421a2654e5aaa4fb2059fd59d7a496f8690bd04d301a7664cff10
- 0x7b201505dbff711b6d0d0dcdfa9d0ba5cd7ce983e5c5a9bb8a493f1ade0c7258
- 0x22c2d1f56a0cadaf7a6c877768665faefad1ab8e73b57d4c93acf288350cb2bf
- 0x75ee9ae21137c517f4e8852fe45f967ab0778f2386d2868c7faba9e8252a8081
- 0x7c4207a14edabe3eeb4aabc1011e40b0fc6ae59d70e5ac889e8bc46c70206947
- 0x0bc2e450088caaf379d67a058866fbaec20504df13b577306f560fd413935933
- 0xc1892e1f31516991ebd2b68b1883c63619880797be155d4c7f6ef90340e294aa
- 0xb59ab9723c94bb11211a69aab135061f373122c6fca8c5dbfd525237ac1ef164
- 0x588f372bbaaf730e538542f070b005c0dd23fdb8c7f43a940481de0c1681aae1
- 0xd75ede2689ed83bbc8980becaf4f32a77c7e05567790cd351e997bb28aa0844c
- 0x92ff7d176556ddbe3d885e2ab73948b14a6aa3568a8fd237427d4f8415235a23
- 0xd1d3499072edb10edc68f84bcae2365d2ab534df689250cab18c751b6f13b6ff
- 0x7ddc2fead128357f881b63e6c7c26d7fbbb84fca6c7c8e0bbfe386de86ca8d39
- 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
- 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae