← The evidence ledger
Evidence row 1792177
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://apexfaucet.xyz/api/x402/research-search
- Recorded
- Previous row
- #1262891
- Body SHA-256
- ade6dbe81d88c480f7e881fa55af1cd43d4b1c47adc936c612171cceb2d9a3e0
- Leaf
- 0x876d6db00b320cb410f0c5d0dd6f6d2ce2586eb57b42004c26250d3b2debe62a
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": "2026-11-01T03:54:28.281Z",
"quality": {
"l30DaysTotalCalls": 5,
"l30DaysUniquePayers": 4,
"lastCalledAt": "2026-11-01T03:54:28.044Z"
},
"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":"ade6dbe81d88c480f7e881fa55af1cd43d4b1c47adc936c612171cceb2d9a3e0","id":1792177,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793560013172009,"prev":1262891,"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 (302406 rows).
- 0x876d702c4d7c7916833074f6f6074c7487c1663006fa962208a9607398883459
- 0x4a112ca89078fcbf076c701d962af3bc6ed7a128c78a77d272b498be29f89b44
- 0xe83534772acb186b5b3f3e3db807b56bef7c9429c03359778b4d6743a0dc412a
- 0x9aefcc6d0be3dae08b7da56ffb6b7158363f6a7339cf380aef76a28aad3f7d1b
- 0xc3b43e713008fdd9aec1ad992e8a0fc0ca1781bf77076dbd59e507c01cf1d897
- 0xcd13f54b41b69d31fbe75a31de153ffc911645f16110af219ad540aab4420c3b
- 0xbd0f308c24fe2f335cfe704efe61b94f15b22056f433605a9f9b3786af5055ab
- 0xc40b5e5c986a50e7d3f1c98a865bc20b193d273ead53bd20a31da728380fc824
- 0x59afe4e4b6c31d1c9b5625d0b7c6362b89421d22b6d638595edab0f5afa89871
- 0xdb7ab27082ef1e1f129514aaa2f64ba8b6694c52b8fdc97e9d418b7f094a3f46
- 0x62a2451abdf0e20bf1cd927b1b8648c1c04bf423402da8371ddecbfc414d7826
- 0xb8eddc32106b383c3a59e35f618fe91531b43ab557a35053f3eefd2bb2f6231b
- 0x77788e2b0f83c42b3024a8d425784a46c4c2d0777f8487d593e102e987eabf52
- 0x12d005bd5bab52a5295a7639e02ffa6fa98b5e18753f0f4638b668903af24ab7
- 0x3950a937c3f98cedf9cbbc2f8905c10e3aac8ebc54b1e3468237d58bb254c496
- 0xe329dbfb0db2c7f35334e66970a8ee37ee2d3356d34d692c10f84b6f7de65a35
- 0x0c618c42b286ad61acd8204aa6dcf024b8b041d3759aa585bf4e221abc39cb5d
- 0x6142ac48fda269c17791c79da99c2456ac6acfe98268f4d168a404fd6040c703
- 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910
- Day root
- 0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3
- Chained
- 0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4
- Published
- On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90