← The evidence ledger
Evidence row 751928
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://apexfaucet.xyz/api/x402/research-search
- Recorded
- Previous row
- #548679
- Body SHA-256
- 340c51978b615f6ee2ebb765c23fb51ebd1056d060c0dc0f6c0fdc30937c2586
- Leaf
- 0x7652ad68af8fe64d4e0f1127862860616c6c58c3615cfaf65d7908eef02133a1
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": 5,
"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":"340c51978b615f6ee2ebb765c23fb51ebd1056d060c0dc0f6c0fdc30937c2586","id":751928,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793178793420421,"prev":548679,"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 (231336 rows).
- 0x76534cc82ce9b04d026fd3cfad9b0ee2ccaaeb056208bfe7d90ecb891ccd5fed
- 0x4888d8f60655c5806a2601d6d457a6cca29fee29204f6bc0a3fe04793e529f28
- 0x751bd079d9ac58f367ccfe64f5cefe0d8a7a6910b3b791528eaa9389e2dad78c
- 0x9d462105bb5785ad2e32b2cce9531886a73804466964c70e46e37485557fdb97
- 0x916813a71973851e6b9d69ab3ca0a2c6914a9c3cf17b94856daa9d6f2be7ffbc
- 0xd47a8577528978b67e1ebe0c09aba7dc60c1922b2db0b6c76e329388d767839a
- 0x91ca533619b4489a01b0da0e4a761b64e48201e2e03b60593bdb3210cba4dc11
- 0x4d31c08af2eef202a60094d3625ba40544921500cc6345c5d9a805fb7f2c1fc2
- 0xdedcdcf6c273d9b543413a1f34a7fd54c21725592040d83868c2dd071a05c80f
- 0xbc37339f1d4bff78bd5c3f48093d1ca3086e5a454e6b5e0554a3025f8cb05f9e
- 0x191722a60852585b0822c56f76de8e5645e858684b96888ba9c853cf22ce4b29
- 0xdb715aef70540cf2462c6d23ed65a7b4f80c4d46060d218b3f284831fef0fc9e
- 0x95d7bc27dc9ea43e607251bd7e1cdfa9e00b59b71051b5db78fe06bf25becc5b
- 0x40581185279a8bf075dca3a4c3a5648ec6f62098ba7402cbc097d5cc707e0840
- 0xab4e84d781dccd579dcf5c47a356a4a2e6cac58a2aefdf3543a3fa15238fa4db
- 0x74cf00e07b52415c2184cf20be69d195ed2725497a6892c2f3e449497c17d0ec
- 0x7a743a0a09057bae687051274e1d45bf973bd36a1a4ba16a191b5d29e3bdfa2a
- 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f
- Day root
- 0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e
- Chained
- 0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be
- Published
- On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae