← The evidence ledger
Evidence row 527002
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://clinical-trials.use.x402atlas.com/recent
- Recorded
- Previous row
- #452066
- Body SHA-256
- b45abfafa87b51574948b1cb5442b80f4836ef824dd120dcfcc71b2e9f27a2c0
- Leaf
- 0x2b5629aa53038091c1de93429770ed84f575e639f812fc8fb695799eae2380d9
What was observed
{
"endpoints": [
[
"x402",
"https://clinical-trials.use.x402atlas.com/recent"
]
],
"name": "Clinical Trial Updates",
"owner_address": "0x8c128f1ee62bb5e47867cfbae2ad89be325df1b2",
"raw": {
"accepts": [
{
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"merchant": "x402Atlas",
"name": "USD Coin",
"tier": "standard",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"merchant": "x402Atlas",
"name": "USD Coin",
"tier": "standard",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"merchant": "x402Atlas",
"name": "USD Coin",
"tier": "standard",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"merchant": "x402Atlas",
"tier": "standard"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ",
"scheme": "exact"
}
],
"description": "Clinical trial updates feed — ClinicalTrials.gov studies for a condition that were posted or updated in the last N days, newest first, with status, phases, interventions, sponsor, dates and enrollment. Use to monitor a disease area, a drug or a sponsor for new trials, status changes and posted results.",
"extensions": {
"bazaar": {
"category": "health",
"info": {
"input": {
"method": "GET",
"queryParams": {
"condition": "melanoma"
},
"type": "http"
},
"output": {
"example": {
"as_of": "2026-10-20T19:30:00Z",
"caveat": "Registry entries are sponsor-reported and revised over time; a completed status does not mean results were posted. Not medical advice.",
"condition": "melanoma",
"count": 2,
"days": 7,
"intervention": "",
"modified": true,
"next_page_token": "ZVNj7o2Elu8o3lpzW96v4q2tmpOQJJxuYvin2PEemD6SuP08FCfCFfHW_9RP1SI",
"since": "2026-10-13",
"source": {
"citation": "Source: ClinicalTrials.gov, U.S. National Library of Medicine. Normalized by x402 Atlas; not the registry's verbatim record.",
"name": "ClinicalTrials.gov",
"url": "https://clinicaltrials.gov"
},
"sponsor": "",
"studies": [
{
"completion_date": {
"date": "2027-11-15",
"precision": "day"
},
"conditions": [
"Melanoma"
],
"enrollment": {
"count": 2000,
"type": "estimated"
},
"first_posted": {
"date": "2026-10-20",
"precision": "day"
},
"has_results": false,
"interventions": [],
"last_updated": {
"date": "2026-10-20",
"precision": "day"
},
"lead_sponsor": "Mitra Bio",
"nct_id": "NCT07883954",
"official_title": "Development and Multi-Centre Validation of a Novel Non-Invasive Melanoma Molecular Diagnostic Test",
"phases": [],
"primary_completion_date": {
"date": "2027-10-10",
"precision": "day"
},
"start_date": {
"date": "2026-06-10",
"precision": "day"
},
"status": "recruiting",
"study_type": "observational",
"title": "Development and Multi-Centre Validation of a Novel Non-Invasive Melanoma Molecular Diagnostic Test",
"url": "https://clinicaltrials.gov/study/NCT07883954"
},
{
"completion_date": {
"date": "2028-06",
"precision": "month"
},
"conditions": [
"Advanced Solid Tumor",
"Pancreatic Adenocarcinoma",
"Malignant Melanoma (Cutaneous)",
"Non-small Cell Lung Cancer (NSCLC)"
],
"enrollment": {
"count": 209,
"type": "actual"
},
"first_posted": {
"date": "2022-10-18",
"precision": "day"
},
"has_results": false,
"interventions": [
{
"name": "IMM-1-104 Monotherapy (Treatment Group A)",
"type": "drug"
},
{
"name": "IMM-1-104 + modified Gemcitabine/nab-Paclitaxel (Treatment Group B)",
"type": "drug"
}
],
"last_updated": {
"date": "2026-10-20",
"precision": "day"
},
"lead_sponsor": "Immuneering Corporation",
"nct_id": "NCT05585320",
"official_title": "A Phase 1/2a, Open-Label, Multicenter, Nonrandomized, Safety and Anti-tumor Activity Study of IMM-1-104, a Novel Oral Dual MEK1/2 Inhibitor in Participants With Advanced or Metastatic Solid Tumors",
"phases": [
"1",
"2"
],
"primary_completion_date": {
"date": "2027-06",
"precision": "month"
},
"start_date": {
"date": "2022-10-31",
"precision": "day"
},
"status": "active_not_recruiting",
"study_type": "interventional",
"title": "A Phase 1/2a Study of IMM-1-104 in Participants With Advanced or Metastatic Solid Tumors",
"url": "https://clinicaltrials.gov/study/NCT05585320"
}
],
"total": 62
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"additionalProperties": false,
"properties": {
"condition": {
"description": "Condition or disease; omitted runs the example",
"maxLength": 200,
"type": "string"
},
"days": {
"default": 7,
"description": "Window ending today, UTC",
"maximum": 365,
"minimum": 1,
"type": "integer"
},
"intervention": {
"description": "Intervention or treatment filter",
"maxLength": 200,
"type": "string"
},
"limit": {
"default": 10,
"maximum": 50,
"minimum": 1,
"type": "integer"
},
"page_token": {
"description": "next_page_token of the previous page",
"maxLength": 512,
"type": "string"
},
"sponsor": {
"description": "Lead sponsor name filter",
"maxLength": 200,
"type": "string"
}
},
"required": [
"condition"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"as_of": {
"description": "Retrieval time, UTC",
"format": "date-time",
"type": "string"
},
"caveat": {
"description": "Fixed interpretation note",
"type": "string"
},
"condition": {
"type": "string"
},
"count": {
"description": "Studies on this page",
"type": "integer"
},
"days": {
"type": "integer"
},
"intervention": {
"description": "Applied filter; empty when none",
"type": "string"
},
"modified": {
"description": "Always true: fields are normalized, not the registry's verbatim record",
"type": "boolean"
},
"next_page_token": {
"description": "Pass as page_token for the next page; empty on the last page",
"type": "string"
},
"note": {
"description": "Present only on an empty window",
"type": "string"
},
"since": {
"description": "UTC start of the window",
"type": "string"
},
"source": {
"additionalProperties": false,
"properties": {
"citation": {
"description": "Attribution requested by the registry",
"type": "string"
},
"name": {
"type": "string"
},
"url": {
"type": "string"
}
},
"required": [
"name",
"url",
"citation"
],
"type": "object"
},
"sponsor": {
"description": "Applied filter; empty when none",
"type": "string"
},
"studies": {
"description": "Study summaries: nct_id, title, official_title, status (lowercase registry status), study_type, phases[] (early1|1|2|3|4|na), conditions[], interventions[] {type, name}, lead_sponsor, start_date/primary_completion_date/completion_date {date, precision: day|month|year, type?} (absent when not reported), enrollment {count, type}, has_results, url",
"items": {
"type": "object"
},
"type": "array"
},
"total": {
"description": "Studies matching across all pages",
"type": "integer"
}
},
"required": [
"as_of",
"source",
"caveat",
"modified",
"condition",
"intervention",
"sponsor",
"days",
"since",
"count",
"total",
"studies",
"next_page_token"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
},
"tags": [
"clinical-trials",
"clinicaltrials-gov",
"trial-updates",
"monitoring",
"medical-research"
]
}
},
"lastUpdated": "2026-10-27T10:04:54.184Z",
"quality": {
"l30DaysTotalCalls": 3,
"l30DaysUniquePayers": 3,
"lastCalledAt": "2026-10-27T10:04:54.062Z"
},
"resource": "https://clinical-trials.use.x402atlas.com/recent",
"serviceName": "Clinical Trial Updates",
"tags": [
"clinical-trials",
"clinicaltrials-gov",
"trial-updates",
"monitoring",
"medical-research"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Clinical trial updates feed — ClinicalTrials.gov studies for a condition that were posted or updated in the last N days, newest first, with status, phases, interventions, sponsor, dates and enrollment. Use to monitor a disease area, a drug or a sponsor for new trials, status changes and posted results."
}What the leaf hashes
{"body":"b45abfafa87b51574948b1cb5442b80f4836ef824dd120dcfcc71b2e9f27a2c0","id":527002,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793124793478084,"prev":452066,"subject":"x402_bazaar:https://clinical-trials.use.x402atlas.com/recent","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (273461 rows).
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- 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699
- Day root
- 0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795
- Chained
- 0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4
- Published
- On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4