← The evidence ledger
Evidence row 751142
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://api.findmydirectdoctor.com/v1/colonoscopy/estimate
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 8b48d0ff97f893ee7df3839a5b8ee894b0d8c05bfb1caf90d3e8c051c7c45f87
- Leaf
- 0xb89d31d0f4017585ea924555d8c479f923ed4a0a518fd1de3c3f8da7c3711d1e
What was observed
{
"endpoints": [
[
"x402",
"https://api.findmydirectdoctor.com/v1/colonoscopy/estimate"
]
],
"name": "FindMyDirectDoctor Directory API",
"owner_address": "0xdf0102f7e02be8e80212698c38180adae3e01365",
"raw": {
"accepts": [
{
"amount": "30000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 60,
"network": "eip155:8453",
"payTo": "0xdF0102F7E02be8e80212698C38180ADAE3e01365",
"scheme": "exact"
}
],
"description": "Colonoscopy price estimate near a location: posted hospital cash prices for four colonoscopy codes (diagnostic, with biopsy, with polyp removal, screening) with area medians, plus the Medicare 2026 allowed amounts at an ambulatory surgery center (surgery center) versus a hospital outpatient department for that ZIP, split into facility, doctor, anesthesia and lab. Plain explanations included. Reference prices, not quotes.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"limit": 1,
"radius_miles": 25,
"zip": "66210"
},
"type": "http"
},
"output": {
"example": {
"data_as_of": "2026-10-02",
"disclaimer": "Posted hospital self-pay prices for the facility portion only. Final bills can differ. Confirm with the hospital.",
"explanations": [
"A colonoscopy has several separate bills: the facility (hospital or surgery center), the doctor, the anesthesia provider and, if tissue is taken, the lab. Hospital cash prices in this response cover the hospital's facility part only.",
"Hospital cash prices in this response cover the hospital's facility part only, so they compare with the Facility row, not with the Total row.",
"Prices flagged unusual are kept in the list and left out of the area median."
],
"hospital_cash_prices": [
{
"area_prices": {
"high_usd": 4512.93,
"low_usd": 764.71,
"median_usd": 1578.48,
"n_used": 10,
"p25_usd": 926,
"p75_usd": 4046.96
},
"category": "colonoscopy",
"code": "45378",
"hospitals": [
{
"cash_price_usd": 764.71,
"ccn": "170049",
"city": "Olathe",
"distance_miles": 9.7,
"fap_url": "https://www.kansashealthsystem.com/patient-visitor/financial/financial-assistance",
"file_date": "2026-04-08",
"flag": "case_rate_only",
"name": "University of Kansas Health System Olathe Hospital",
"state": "KS"
}
],
"hospitals_with_price": 10,
"meaning": "a diagnostic colonoscopy (looking only, nothing taken or removed)",
"national_median_usd": 1849.5,
"plain_name": "Diagnostic colonoscopy (looking only)"
},
{
"area_prices": {
"high_usd": 7227.69,
"low_usd": 1127,
"median_usd": 2098.28,
"n_used": 10,
"p25_usd": 1201.24,
"p75_usd": 5807.07
},
"category": "colonoscopy",
"code": "45380",
"hospitals": [
{
"cash_price_usd": 1127,
"ccn": "170146",
"city": "Kansas City",
"distance_miles": 13.5,
"fap_url": "https://providencekc.com/financial-assistance/",
"file_date": "2026-03-17",
"flag": "",
"name": "Providence Medical Center",
"state": "KS"
}
],
"hospitals_with_price": 10,
"meaning": "a colonoscopy with a biopsy (a small tissue sample)",
"national_median_usd": 2070.4,
"plain_name": "Colonoscopy with a biopsy"
}
],
"medicare_2026_benchmark": {
"approximate": false,
"assumptions": "The anesthesia amount assumes 30 minutes of anesthesia time. Real cases vary.",
"basis": "the ZIP code given",
"codes": [
{
"code": "45378",
"comparison_text": "In this area Medicare allows about $394 less at a surgery center than at a hospital outpatient department for this test.",
"hospital_minus_surgery_center_usd": 394,
"hospital_outpatient_department": {
"anesthesia_usd": 117,
"doctor_usd": 154,
"facility_usd": 880,
"lab_exam_of_tissue_usd": 0,
"total_usd": 1151
},
"meaning": "a diagnostic colonoscopy (looking only, nothing taken or removed)",
"note": "No lab exam of tissue is counted for this code, because no tissue is taken. If the doctor finds and removes a polyp, the bill changes to the polyp removal price.",
"plain_name": "Diagnostic colonoscopy (looking only)",
"surgery_center": {
"anesthesia_usd": 117,
"doctor_usd": 154,
"facility_usd": 486,
"lab_exam_of_tissue_usd": 0,
"total_usd": 757
}
},
{
"code": "45380",
"comparison_text": "In this area Medicare allows about $507 less at a surgery center than at a hospital outpatient department for this test.",
"hospital_minus_surgery_center_usd": 507,
"hospital_outpatient_department": {
"anesthesia_usd": 117,
"doctor_usd": 166,
"facility_usd": 1133,
"lab_exam_of_tissue_usd": 65,
"total_usd": 1481
},
"meaning": "a colonoscopy with a biopsy (a small tissue sample)",
"plain_name": "Colonoscopy with a biopsy",
"surgery_center": {
"anesthesia_usd": 117,
"doctor_usd": 166,
"facility_usd": 626,
"lab_exam_of_tissue_usd": 65,
"total_usd": 974
}
}
],
"compare_with": "Hospital cash prices in this response cover the hospital's facility part only, so they compare with the Facility row, not with the Total row.",
"definitions": "A surgery center (ambulatory surgery center) is an outpatient center that is not part of a hospital. A hospital outpatient department is the part of a hospital that treats people who go home the same day. Medicare pays the facility, the doctor, the anesthesia provider and the lab as separate bills.",
"disclaimer": "Medicare amounts are what Medicare allows, not cash prices and not quotes. Cash prices can be above or below them. Confirm every price with the provider.",
"lab_note": "The lab amount is the full lab fee. At a hospital the lab work is often part of the facility amount, so the hospital total can be a little lower.",
"meaning": "This is what Medicare allows in 2026 for the test in the ZIP code area. It is not a cash price and no one has to charge it. It is a reference point set by the government from the measured cost of the work.",
"year": 2026,
"zip": "66210"
},
"query": {
"limit": 1,
"location": "ZIP 66210",
"radius_miles": 25,
"sort": "price"
},
"source": "FindMyDirectDoctor Foundation hospital cash price library (hospital price files posted under the federal price transparency rule, 45 CFR 180); CMS 2026 Physician Fee Schedule, ASC and OPPS payment files"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"city": {
"description": "City name. Used together with state.",
"maxLength": 80,
"type": "string"
},
"lat": {
"description": "Latitude in decimal degrees. Used together with lng.",
"maximum": 90,
"minimum": -90,
"type": "number"
},
"limit": {
"default": 3,
"description": "Results per page (default 3, maximum 10).",
"maximum": 10,
"minimum": 1,
"type": "integer"
},
"lng": {
"description": "Longitude in decimal degrees. Used together with lat.",
"maximum": 180,
"minimum": -180,
"type": "number"
},
"radius_miles": {
"default": 50,
"description": "Search radius in miles (default 50, maximum 150). A larger value is lowered to the maximum.",
"exclusiveMinimum": 0,
"maximum": 150,
"type": "number"
},
"sort": {
"default": "price",
"description": "How the hospitals under each code are ordered.",
"enum": [
"price",
"distance"
],
"type": "string"
},
"state": {
"description": "2-letter US state code. Used together with city.",
"pattern": "^[A-Za-z]{2}$",
"type": "string"
},
"zip": {
"description": "5-digit US ZIP code. A location is given as zip, or lat with lng, or city with state.",
"pattern": "^\\d{5}$",
"type": "string"
}
},
"required": [],
"type": "object"
},
"type": {
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"type": "string"
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"required": [
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"method"
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"type": "object"
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"output": {
"properties": {
"example": {
"properties": {
"data_as_of": {
"type": "string"
},
"disclaimer": {
"description": "Posted hospital self-pay prices for the facility portion only. Final bills can differ. Confirm with the hospital.",
"type": "string"
},
"explanations": {
"items": {
"type": "string"
},
"type": "array"
},
"flag_note": {
"type": "string"
},
"hospital_cash_prices": {
"items": {
"properties": {
"area_prices": {
"properties": {
"high_usd": {
"type": [
"number",
"null"
]
},
"low_usd": {
"type": [
"number",
"null"
]
},
"median_usd": {
"type": [
"number",
"null"
]
},
"n_used": {
"type": "integer"
},
"p25_usd": {
"type": [
"number",
"null"
]
},
"p75_usd": {
"type": [
"number",
"null"
]
}
},
"type": "object"
},
"category": {
"type": "string"
},
"code": {
"type": "string"
},
"hospitals": {
"items": {
"properties": {
"cash_price_usd": {
"description": "Posted self-pay (cash) price, facility portion only.",
"type": "number"
},
"ccn": {
"description": "CMS certification number.",
"type": "string"
},
"city": {
"type": "string"
},
"distance_miles": {
"type": [
"number",
"null"
]
},
"fap_url": {
"description": "Verified financial assistance (charity care) page, or null.",
"type": [
"string",
"null"
]
},
"file_date": {
"description": "Date of the hospital's price file.",
"type": [
"string",
"null"
]
},
"flag": {
"description": "Data flag. Empty when none. See flag_key.",
"type": "string"
},
"name": {
"type": "string"
},
"state": {
"type": "string"
}
},
"type": "object"
},
"type": "array"
},
"hospitals_with_price": {
"type": "integer"
},
"meaning": {
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},
"national_median_usd": {
"type": [
"number",
"null"
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},
"plain_name": {
"type": "string"
}
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"type": "object"
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"medicare_2026_benchmark": {
"description": "Medicare 2026 allowed amounts for the ZIP: surgery center versus hospital outpatient department. null when no area was found.",
"properties": {
"approximate": {
"type": "boolean"
},
"approximate_note": {
"type": "string"
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"assumptions": {
"type": "string"
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"basis": {
"type": "string"
},
"codes": {
"items": {
"properties": {
"code": {
"type": "string"
},
"comparison_text": {
"type": "string"
},
"hospital_minus_surgery_center_usd": {
"type": "number"
},
"hospital_outpatient_department": {
"properties": {
"anesthesia_usd": {
"type": "number"
},
"doctor_usd": {
"type": "number"
},
"facility_usd": {
"type": "number"
},
"lab_exam_of_tissue_usd": {
"type": "number"
},
"total_usd": {
"type": "number"
}
},
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},
"meaning": {
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},
"note": {
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"plain_name": {
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"surgery_center": {
"properties": {
"anesthesia_usd": {
"type": "number"
},
"doctor_usd": {
"type": "number"
},
"facility_usd": {
"type": "number"
},
"lab_exam_of_tissue_usd": {
"type": "number"
},
"total_usd": {
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}
},
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}
},
"type": "object"
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"type": "array"
},
"compare_with": {
"type": "string"
},
"definitions": {
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},
"disclaimer": {
"type": "string"
},
"lab_note": {
"type": "string"
},
"meaning": {
"type": "string"
},
"year": {
"type": "integer"
},
"zip": {
"type": "string"
}
},
"type": [
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"null"
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},
"query": {
"description": "The request as understood.",
"type": "object"
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"source": {
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"required": [
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"hospital_cash_prices",
"medicare_2026_benchmark",
"explanations",
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"disclaimer"
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},
"type": {
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},
"iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1793129241/bazaar-icons/e5667360930b8563.png",
"lastUpdated": "2026-10-28T00:19:46.867Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-28T00:19:46.753Z"
},
"resource": "https://api.findmydirectdoctor.com/v1/colonoscopy/estimate",
"serviceName": "FindMyDirectDoctor Directory API",
"tags": [
"healthcare",
"doctors",
"direct-primary-care",
"dpc",
"concierge-medicine"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Colonoscopy price estimate near a location: posted hospital cash prices for four colonoscopy codes (diagnostic, with biopsy, with polyp removal, screening) with area medians, plus the Medicare 2026 allowed amounts at an ambulatory surgery center (surgery center) versus a hospital outpatient department for that ZIP, split into facility, doctor, anesthesia and lab. Plain explanations included. Reference prices, not quotes."
}What the leaf hashes
{"body":"8b48d0ff97f893ee7df3839a5b8ee894b0d8c05bfb1caf90d3e8c051c7c45f87","id":751142,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793178704932070,"prev":null,"subject":"x402_bazaar:https://api.findmydirectdoctor.com/v1/colonoscopy/estimate","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).
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- Day root
- 0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e
- Chained
- 0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be
- Published
- On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae