← The evidence ledger
Evidence row 4561
Observed , by baseline/1.
- Kind
- listing
- About
- source_record agentic_market:x402-research-iota-vercel-app
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- f52084e209a1adba9e2297eaa99e2ac495d614f5d5fed53cb59cda3458a9a2a6
- Leaf
- 0xb39e38877e35a81528f04bdf528fd1d047507692f4529a339a21da6d9afe3405
What was observed
{
"endpoints": [
[
"x402",
"https://x402-research-iota.vercel.app/api/brief/:asset"
],
[
"x402",
"https://x402-research-iota.vercel.app/api/firm/risk-snapshot"
],
[
"x402",
"https://x402-research-iota.vercel.app/api/signal-batch"
],
[
"x402",
"https://x402-research-iota.vercel.app/api/signal/:asset"
],
[
"x402",
"https://x402-research-iota.vercel.app/api/x402/approval-enumerate"
],
[
"x402",
"https://x402-research-iota.vercel.app/api/x402/invoice-decode"
],
[
"x402",
"https://x402-research-iota.vercel.app/api/x402/preflight"
],
[
"x402",
"https://x402-research-iota.vercel.app/api/x402/settlement-status"
]
],
"name": "x402-research-iota.vercel.app",
"owner_address": null,
"raw": {
"caip2_networks": [
"eip155:8453"
],
"category": "",
"description": "",
"domain": "x402-research-iota.vercel.app",
"endpoints": [
{
"description": "Technical + sentiment research brief (price, 24h/7d change, RSI14, SMA20/50, trend, Fear & Greed). Assets: btc,eth,sol,xrp,doge,ada,avax,link,dot,ltc,bch,uni,aave,xlm,hbar,shib,sui,near,atom,fil",
"method": "GET",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": "btc",
"group": "path",
"name": "asset",
"required": false,
"type": "string"
}
],
"pricing": {
"amount": "0.03",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "1"
},
"serviceName": "",
"tags": [],
"url": "https://x402-research-iota.vercel.app/api/brief/:asset"
},
{
"description": "Use before interacting with an unfamiliar Base (chain 8453) address: returns a public-data red-flag snapshot (contract vs EOA, EIP-7702 delegation, source verification, upgradeable proxy, age, activity, ETH/USDC balance, risk level). Pass ?address=0x... Errors: 400 invalid address. Informational only.",
"method": "GET",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"group": "query",
"name": "address",
"required": false,
"type": "string"
}
],
"pricing": {
"amount": "0.03",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "5",
"l30DaysUniquePayers": "2"
},
"serviceName": "",
"tags": [],
"url": "https://x402-research-iota.vercel.app/api/firm/risk-snapshot"
},
{
"description": "Live trend signals for up to 10 assets in one call, flat price regardless of count. Pass ?assets=btc,eth,... from: btc,eth,sol,xrp,doge,ada,avax,link,dot,ltc,bch,uni,aave,xlm,hbar,shib,sui,near,atom,fil. Errors (before payment): 400 missing/unsupported/too many assets.",
"method": "GET",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": "btc,eth,sol",
"group": "query",
"name": "assets",
"required": false,
"type": "string"
}
],
"pricing": {
"amount": "0.02",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "1",
"l30DaysUniquePayers": "1"
},
"serviceName": "",
"tags": [],
"url": "https://x402-research-iota.vercel.app/api/signal-batch"
},
{
"description": "Compact trend signal (bullish/neutral/bearish + score). Assets: btc,eth,sol,xrp,doge,ada,avax,link,dot,ltc,bch,uni,aave,xlm,hbar,shib,sui,near,atom,fil. Free delayed sample: /api/sample/signal",
"method": "GET",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": "btc",
"group": "path",
"name": "asset",
"required": false,
"type": "string"
}
],
"pricing": {
"amount": "0.003",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "3",
"l30DaysUniquePayers": "2"
},
"serviceName": "",
"tags": [],
"url": "https://x402-research-iota.vercel.app/api/signal/:asset"
},
{
"description": "List live ERC-20 approvals for a Base (8453) address: token, spender, current allowance, unlimited flag. status ok (complete, approvals found) / none (complete, zero active) / unknown (data incomplete; reason given; never reported as none). Pass ?address=0x... Errors: 400 invalid address; 503 indexer/RPC unavailable (not charged). Read-only; never signs.",
"method": "GET",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": "0xf9623fab6780984eacac443158c0309519451afa",
"group": "query",
"name": "address",
"required": false,
"type": "string"
}
],
"pricing": {
"amount": "0.03",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "2",
"l30DaysUniquePayers": "1"
},
"serviceName": "",
"tags": [],
"url": "https://x402-research-iota.vercel.app/api/x402/approval-enumerate"
},
{
"description": "Use before paying any x402 invoice: decodes a base64 PAYMENT-REQUIRED header (query ?header= or JSON body {header}) and checks scheme exact, Base mainnet, Base USDC asset, payTo (EOA/contract/EIP-7702), human amount, timeout; returns verdict ok/warn/fail with reasons. Errors: 400 invalid header. Read-only; never signs or pays.",
"method": "GET",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": "eyJ4NDAyVmVyc2lvbiI6Miwi...",
"group": "query",
"name": "header",
"required": false,
"type": "string"
}
],
"pricing": {
"amount": "0.02",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "1",
"l30DaysUniquePayers": "1"
},
"serviceName": "",
"tags": [],
"url": "https://x402-research-iota.vercel.app/api/x402/invoice-decode"
},
{
"description": "One-call Base (8453) preflight: risk snapshot + live ERC-20 approvals + OFAC SDN screen + optional x402 invoice check (?invoice= JSON or base64). Returns risk, approvals, invoice, sanctions and summary {verdict proceed|review|stop, flags}. Free sample: /api/preflight/sample. 400 bad input; 503 not charged. Informational, not a guarantee.",
"method": "GET",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": "0xf9623fab6780984eacac443158c0309519451afa",
"group": "query",
"name": "address",
"required": false,
"type": "string"
}
],
"pricing": {
"amount": "0.05",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "1",
"l30DaysUniquePayers": "1"
},
"serviceName": "",
"tags": [],
"url": "https://x402-research-iota.vercel.app/api/x402/preflight"
},
{
"description": "Check an x402 settlement on Base (chain 8453): tx exists/succeeded, USDC Transfer and AuthorizationUsed events (from, to, amount), confirmations. Pass ?tx=0x... Errors: 400 invalid tx hash. Read-only.",
"method": "GET",
"parameters": [
{
"default": null,
"description": "",
"enumValues": [],
"example": "0x6db0873a0a6de25a5792d465378251d7b3fe74b55761a1ac1b9f6489bb0509f3",
"group": "query",
"name": "tx",
"required": false,
"type": "string"
}
],
"pricing": {
"amount": "0.02",
"currency": "USDC",
"maxAmount": "",
"minAmount": "",
"network": "eip155:8453",
"scheme": "exact"
},
"providerName": "",
"quality": {
"l30DaysTotalCalls": "1",
"l30DaysUniquePayers": "1"
},
"serviceName": "",
"tags": [],
"url": "https://x402-research-iota.vercel.app/api/x402/settlement-status"
}
],
"enriched": false,
"iconUrl": "",
"id": "x402-research-iota-vercel-app",
"integrationType": "",
"isNew": false,
"name": "x402-research-iota.vercel.app",
"networks": [
"Base"
],
"priceSummary": {
"avgCostBasis": "exact",
"avgCostPerTransaction": "0.025375",
"currency": "USDC",
"maxAmount": "0.05",
"minAmount": "0.003"
},
"provider": "x402-research-iota.vercel.app",
"providerUrl": "",
"serviceName": "",
"tags": []
},
"source": "agentic_market",
"summary": ""
}What the leaf hashes
{"body":"f52084e209a1adba9e2297eaa99e2ac495d614f5d5fed53cb59cda3458a9a2a6","id":4561,"kind":"listing","method":"baseline/1","observed_us":1793025278113847,"prev":null,"subject":"agentic_market:x402-research-iota-vercel-app","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).
- 0xb39e11a6e75cfaf52fd308f5181f276336b89a1bf9af1dc47ef9d9d30b7f7770
- 0x5e25afff97819acce79f323fa01fd8e47b7a7a0f152ee38913a33e2eeb96f390
- 0xa198b301233d6ecca20935ee10c5ede30636c872736e71dc8eea970dd512758b
- 0xba07b22dc0fc704c972ee14809364a049316efe6758002bd6d05c7040747140c
- 0x2f274ba6b89341a04101e76c7f3b728be3918db8f2e30b4d76bb72374d0818a2
- 0x6c1a115cebce06574900b50545998daebee30551709ffa0953c839f815464157
- 0x2b3f55829d70197806aa540dda3d7dd8190a38b6750f054266caa947355872ea
- 0x586bdb7687a269ac39949e89c2081ed5b77656463f4a1cb65a49e3d75b29e58c
- 0xadafc16d116ead5edc3f88bfcb559a636d9650754ac1f6fa383c7092df3f8bf2
- 0xf04f1893fe6291cdbc16182b9a16bead5bf9b24bd4e846024218e2491f79cc69
- 0xc50bb1c2185da1e4294f4829be5412051ce30550dd05a2a26962841b3ba2399d
- 0x3d6ec9d5ef8daa604601742088e213da0a439db6eff6ce50ec3ffb264a60ddd3
- 0x3b1c0e225d1b1cb24cd5d5ea4af2de20ed68a1eaf8b61924ed1b81e4b9cf7e39
- 0x083427e39db4dd470662401f6db5db8fadf084fc4274cf8621b368416952b78b
- 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
- 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
- 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae