← The evidence ledger
Evidence row 1262891
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://apexfaucet.xyz/api/x402/research-search
- Recorded
- Previous row
- #751928
- Body SHA-256
- 3a1e0c00347481ab67973787d273c351df9e086070034eb2b7b4a191e34a7002
- Leaf
- 0xb7ab807c2130127eac7789860faa14f873894b9f70e741ab217f1154f4057b8a
What was observed
{
"endpoints": [
[
"x402",
"https://apexfaucet.xyz/api/x402/research-search"
]
],
"name": "Search: wiki, travel, papers, HN",
"owner_address": "0xd334ab5151c624cada654854e2879903dc4217ed",
"raw": {
"accepts": [
{
"amount": "3000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"credentialTypes": [
"authorization"
],
"name": "USD Coin",
"note": "Sign an EIP-3009 transferWithAuthorization to payTo and send it base64 in PAYMENT-SIGNATURE - we settle it and you pay no gas. Or pay and replay the hash in X-PAYMENT-BASE.",
"replayHeader": "X-PAYMENT-BASE",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xd334ab5151c624cada654854e2879903dc4217ed",
"scheme": "exact"
},
{
"amount": "3000",
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
"credentialTypes": [
"authorization"
],
"name": "USDC",
"note": "Sign an EIP-3009 transferWithAuthorization to payTo and send it base64 in PAYMENT-SIGNATURE - we settle it and you pay no gas. Or, since USDC is also the native gas token on Arc, send a plain value transfer to payTo and replay the hash in X-PAYMENT-ARC. Finality is instant on inclusion.",
"replayHeader": "X-PAYMENT-ARC",
"rpc": "https://rpc.mainnet.arc.io",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:5042",
"payTo": "0xd334ab5151c624cada654854e2879903dc4217ed",
"scheme": "exact"
},
{
"amount": "3000",
"asset": "0x3600000000000000000000000000000000000000",
"extra": {
"name": "GatewayWalletBatched",
"note": "Circle Gateway nanopayment: pay from your Gateway balance with a gas-free signature (validBefore at least 7 days out). Settled by Circle in batches.",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
"version": "1"
},
"maxTimeoutSeconds": 604900,
"network": "eip155:5042",
"payTo": "0xd334ab5151c624cada654854e2879903dc4217ed",
"scheme": "exact"
},
{
"amount": "3000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "GatewayWalletBatched",
"note": "Circle Gateway nanopayment: pay from your Gateway balance with a gas-free signature (validBefore at least 7 days out). Settled by Circle in batches.",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
"version": "1"
},
"maxTimeoutSeconds": 604900,
"network": "eip155:8453",
"payTo": "0xd334ab5151c624cada654854e2879903dc4217ed",
"scheme": "exact"
},
{
"amount": "3000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D93NE2kMj88BPsHfdZZ4A1HX2CGo14Y18Bdb3J4qtD5c"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "HYiepS7mNCVVKoaDmZLQ6rNtMWHTQqKheM1NLGn1x8kJ",
"scheme": "exact"
},
{
"amount": "10000000000000000",
"asset": "0x8d0D000Ee44948FC98c9B98A4FA4921476f08B0d",
"extra": {
"credentialTypes": [
"authorization"
],
"decimals": 18,
"minUsd": 0.01,
"name": "World Liberty Financial USD",
"note": "BNB Smart Chain: sign an EIP-3009 transferWithAuthorization in USD1 (18 decimals, EIP-712 name \"World Liberty Financial USD\", version \"1\") to payTo and send it base64 in PAYMENT-SIGNATURE; we settle it and pay the gas. Minimum $0.01 on BNB.",
"symbol": "USD1",
"version": "1"
},
"maxTimeoutSeconds": 300,
"network": "eip155:56",
"payTo": "0xd334AB5151C624cAdA654854E2879903Dc4217eD",
"scheme": "exact"
},
{
"amount": "10000000000000000",
"asset": "0xcE24439F2D9C6a2289F741120FE202248B666666",
"extra": {
"credentialTypes": [
"authorization"
],
"decimals": 18,
"minUsd": 0.01,
"name": "United Stables",
"note": "BNB Smart Chain: sign an EIP-3009 transferWithAuthorization in U (18 decimals, EIP-712 name \"United Stables\", version \"1\") to payTo and send it base64 in PAYMENT-SIGNATURE; we settle it and pay the gas. Minimum $0.01 on BNB.",
"symbol": "U",
"version": "1"
},
"maxTimeoutSeconds": 300,
"network": "eip155:56",
"payTo": "0xd334AB5151C624cAdA654854E2879903Dc4217eD",
"scheme": "exact"
}
],
"description": "Search Wikipedia, Wikidata, Wikivoyage, Wiktionary, PsychonautWiki (harm reduction), arXiv, OpenAlex, Hacker News and Stack Overflow in one call. Research search in one call: Wikipedia, Wikidata (structured facts, CC0), Wikivoyage (travel guides), Wiktionary (meanings, translations), PsychonautWiki (harm reduction: name a substance and the answer leads with dose ranges, duration and dangerous combinations), Open Targets (drugs, diseases and genes, CC0), ChEMBL (drug molecules, phases, ATC…",
"extensions": {
"bazaar": {
"info": {
"input": {
"discoverable": true,
"method": "GET",
"queryParams": {
"limit": "5",
"q": "x402 payment protocol",
"sources": "arxiv,openalex"
},
"type": "http"
},
"output": {
"schema": {
"properties": {
"data": {
"type": "object"
},
"ok": {
"type": "boolean"
},
"paid": {
"type": "number"
}
},
"type": "object"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"limit": {
"description": "Results per source (default 5, max 10).",
"pattern": "^[0-9]{1,2}$",
"type": "string"
},
"q": {
"description": "What to search for.",
"maxLength": 200,
"minLength": 2,
"type": "string"
},
"sources": {
"description": "Comma list of sources to ask (default all): wikipedia, wikidata, wikivoyage, wiktionary, psychonautwiki, opentargets, chembl, arxiv, openalex, hackernews, stackoverflow.",
"pattern": "^(wikipedia|wikidata|wikivoyage|wiktionary|psychonautwiki|opentargets|chembl|arxiv|openalex|hackernews|stackoverflow)(,(wikipedia|wikidata|wikivoyage|wiktionary|psychonautwiki|opentargets|chembl|arxiv|openalex|hackernews|stackoverflow))*$",
"type": "string"
}
},
"required": [
"q"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"queryParams"
],
"type": "object"
},
"output": {
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1791909159/bazaar-icons/f4adc3a60c4cd07b.png",
"lastUpdated": "2026-10-28T03:37:31.716Z",
"quality": {
"l30DaysTotalCalls": 4,
"l30DaysUniquePayers": 4,
"lastCalledAt": "2026-10-28T03:37:31.46Z"
},
"resource": "https://apexfaucet.xyz/api/x402/research-search",
"serviceName": "Search: wiki, travel, papers, HN",
"tags": [
"search",
"research",
"travel",
"papers",
"wikipedia"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Search Wikipedia, Wikidata, Wikivoyage, Wiktionary, PsychonautWiki (harm reduction), arXiv, OpenAlex, Hacker News and Stack Overflow in one call. Research search in one call: Wikipedia, Wikidata (structured facts, CC0), Wikivoyage (travel guides), Wiktionary (meanings, translations), PsychonautWiki (harm reduction: name a substance and the answer leads with dose ranges, duration and dangerous combinations), Open Targets (drugs, diseases and genes, CC0), ChEMBL (drug molecules, phases, ATC…"
}What the leaf hashes
{"body":"3a1e0c00347481ab67973787d273c351df9e086070034eb2b7b4a191e34a7002","id":1262891,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793385595124203,"prev":751928,"subject":"x402_bazaar:https://apexfaucet.xyz/api/x402/research-search","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (243099 rows).
- 0xb7ab6c3953c00c0fb0e21526fea2d5144ce31768b7a41f278e009392ef9fe77e
- 0x9993e39ba077ccb9e9553df446668f41b2df714bfa3f0dbad5362bd5b933fa92
- 0xfd201e42df73bbf8ba106f95a574cc76d51205d77fc7b20e84fde1fa1229b4ff
- 0x4e30fcbd4f3ec72435ee4c91d5eb861483498ff21299cb3cb9ea84b7725948ed
- 0x8e408b7dbd07fc5bfebf98157c80cb3f08a34fd60b6b98d8b65ee91b3542844b
- 0x08b7a4745b8ded9dee887ca5ee341551d4be26e675cf0421ee9b84eb8a9aa6bc
- 0x881899f70a4680295ec5917b50596209ae1801ba353a3de1e8b4fa7cc7e23bee
- 0xdedbd028a10dfb9a1a5f1b1c7392f6457eeac548c8c6f08121fee1d2034fb6a3
- 0xe465540b6cace586150c3e9aea8f30eee4dbaab5477da118fc21c6e15d0a420a
- 0x65b6e9f202742108109f99a579c63957f70d43bc1c275ade78d4563d46995301
- 0x255148be541b5fd17957fd3c65cb738519d16af59660f9e9f4ddd967877fb114
- 0x5a3e60b10014ee1f267b38c56cccb6113123e4959dfa2a6ee9dcc24c8712d06c
- 0x5643b9288b814282552e201f88aaff802fe65d56312c6c392b831728b9fe829f
- 0x4ac91605f15503f7d7aa9a25d4e54c100a1a62c26e93a7ed87049569e871a9a4
- 0xa0b1f6bc1eecfaf70581673c1a7f638b96d1769a5c578c460337f7db0dbe963e
- 0x0c59b8770d2782eb535aefbb9b2f6810bab4757f51b37e00f5147713a1de9481
- 0x61ef83255d34604cb052882568ca1d1386ac3cfb8284509715bc1734cff77831
- 0x0c43c73b62a5d49ee1444b5dc4195fc5b16b141d3f4458e2e9fbd5fd6ecb367d
- Day root
- 0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875
- Chained
- 0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822
- Published
- On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861