← The evidence ledger
Evidence row 751146
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://api.findmydirectdoctor.com/v1/hospital-prices/stats
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 40ea257e37714f2f2defa531b055e94cd1108a2bbd714d970d4b6a7325a09081
- Leaf
- 0x7e95706cb79dac73041636c9d8dfae4d776a583095d9f9e6296d7820d305086d
What was observed
{
"endpoints": [
[
"x402",
"https://api.findmydirectdoctor.com/v1/hospital-prices/stats"
]
],
"name": "FindMyDirectDoctor Directory API",
"owner_address": "0xdf0102f7e02be8e80212698c38180adae3e01365",
"raw": {
"accepts": [
{
"amount": "20000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 60,
"network": "eip155:8453",
"payTo": "0xdF0102F7E02be8e80212698C38180ADAE3e01365",
"scheme": "exact"
}
],
"description": "Statistics of hospital self-pay (cash) prices for one service in a state or nationwide: number of hospitals, lowest, 25th percentile, median, 75th percentile and highest posted price, plus the national median. The service is a CPT or HCPCS code or plain words such as brain MRI. Built from prices hospitals post under the federal price transparency rule, read in October 2026. Facility portion only.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"code": "70551",
"state": "KS"
},
"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.",
"high_usd": 13016.93,
"hospital_coverage": {
"hospitals_covered": 134,
"hospitals_with_posted_prices": 109,
"scope": "KS"
},
"low_usd": 224,
"median_usd": 1349.78,
"n": 86,
"n_hospitals_covered": 135,
"n_posted": 88,
"national": {
"median_usd": 1857.03,
"n": 3306,
"p25_usd": 1120.8,
"p75_usd": 2877.96
},
"national_median_usd": 1857.03,
"notes": [
"n counts distinct hospital prices used (prices flagged unusual are left out, and hospitals that share one price file with the same price count once).",
"A median needs 5 or more prices and a 25th to 75th percentile range needs 10 or more; otherwise those fields are null."
],
"p25_usd": 874.11,
"p75_usd": 1815.55,
"price_rules_version": "1.8",
"query": {
"code": "70551",
"plain_name": "Brain MRI, no contrast",
"scope": {
"state": "KS"
}
},
"resolved_code": {
"category": "imaging",
"code": "70551",
"plain_name": "Brain MRI, no contrast"
},
"source": "FindMyDirectDoctor Foundation hospital cash price library (hospital price files posted under the federal price transparency rule, 45 CFR 180)"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"code": {
"description": "CPT or HCPCS billing code of one of the 28 supported services, for example 70551 (brain MRI, no contrast). Give code or service, not both. GET /v1/hospital-prices/codes lists them.",
"pattern": "^[A-Za-z0-9]{5}$",
"type": "string"
},
"national": {
"description": "true for nationwide statistics. Give state or national=true, not both.",
"type": "boolean"
},
"service": {
"description": "The service in plain words, for example brain MRI without contrast. The free dictionary resolves it to a code, and the response shows the resolved code and close alternatives.",
"maxLength": 120,
"type": "string"
},
"state": {
"description": "2-letter US state code (or DC). Give state or national=true, not both.",
"pattern": "^[A-Za-z]{2}$",
"type": "string"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"alternatives": {
"description": "Other codes that also fit the words, best first.",
"items": {
"properties": {
"code": {
"type": "string"
},
"plain_name": {
"type": "string"
},
"score": {
"type": "number"
}
},
"type": "object"
},
"type": "array"
},
"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"
},
"high_usd": {
"type": [
"number",
"null"
]
},
"hospital_coverage": {
"description": "How many hospitals are in the price library and how many posted prices, for the scope of this response (counts only, no names).",
"type": "object"
},
"low_usd": {
"type": [
"number",
"null"
]
},
"median_usd": {
"type": [
"number",
"null"
]
},
"n": {
"description": "Distinct hospital prices used.",
"type": "integer"
},
"n_hospitals_covered": {
"description": "Hospitals in scope in the library.",
"type": "integer"
},
"n_posted": {
"type": "integer"
},
"national": {
"properties": {
"median_usd": {
"type": [
"number",
"null"
]
},
"n": {
"type": "integer"
},
"p25_usd": {
"type": [
"number",
"null"
]
},
"p75_usd": {
"type": [
"number",
"null"
]
}
},
"type": "object"
},
"national_median_usd": {
"type": [
"number",
"null"
]
},
"notes": {
"items": {
"type": "string"
},
"type": "array"
},
"p25_usd": {
"type": [
"number",
"null"
]
},
"p75_usd": {
"type": [
"number",
"null"
]
},
"price_rules_version": {
"description": "Version of the rules used to clean the price files.",
"type": [
"string",
"null"
]
},
"query": {
"description": "The request as understood.",
"type": "object"
},
"resolved_code": {
"description": "The billing code the response is about.",
"properties": {
"category": {
"type": "string"
},
"code": {
"type": "string"
},
"plain_name": {
"type": "string"
}
},
"required": [
"code",
"plain_name"
],
"type": "object"
},
"service_match": {
"description": "Present when service (plain words) was used: how the words were matched to a code.",
"properties": {
"confidence": {
"enum": [
"exact",
"close",
"best_guess"
],
"type": "string"
},
"matched_phrase": {
"type": [
"string",
"null"
]
},
"note": {
"type": "string"
},
"query": {
"type": "string"
}
},
"type": "object"
},
"source": {
"type": "string"
}
},
"required": [
"query",
"n",
"data_as_of",
"disclaimer"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"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/v1793129241/bazaar-icons/e5667360930b8563.png",
"lastUpdated": "2026-10-28T00:19:36.37Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-28T00:19:36.219Z"
},
"resource": "https://api.findmydirectdoctor.com/v1/hospital-prices/stats",
"serviceName": "FindMyDirectDoctor Directory API",
"tags": [
"healthcare",
"doctors",
"direct-primary-care",
"dpc",
"concierge-medicine"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Statistics of hospital self-pay (cash) prices for one service in a state or nationwide: number of hospitals, lowest, 25th percentile, median, 75th percentile and highest posted price, plus the national median. The service is a CPT or HCPCS code or plain words such as brain MRI. Built from prices hospitals post under the federal price transparency rule, read in October 2026. Facility portion only."
}What the leaf hashes
{"body":"40ea257e37714f2f2defa531b055e94cd1108a2bbd714d970d4b6a7325a09081","id":751146,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793178704946084,"prev":null,"subject":"x402_bazaar:https://api.findmydirectdoctor.com/v1/hospital-prices/stats","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).
- 0x7e95aca224f810ccd3c7578a39f1d4548404b06e586f4bcf68311f4e4e37f014
- 0x67bfe542edcd7042e2b9719e63152d8078fe1b30dd3c91638f4a3e12d36ac74f
- 0xba6c7fc003846a456cb7d14346c2998fb571806c0067eaeaef170021151406a1
- 0x2590101005d03309aede61e33d6babd3fce876df2cb3fa2069078ad6d97596cf
- 0xb72807fe4ca1f2e353ce66d9847b295dd40398c6a6822d0a0f053b046b7e9788
- 0x0b3f4076cf1fc944c59fa99d7cdb2d2819e2fbf0fd866c240f6d22954f3631a7
- 0x39148eb87c4803f8a9fb38505e2a7f63d40895b47c94c011ff01cb3ce0386a89
- 0x65bc3bed3b891056fc2591f8136c33cedbe93d381212245d85d9c186d56b78cf
- 0xc53e583ebdd2c64768e2f66b391c7622882b55a00e8d9b5e560666d2328bd7f7
- 0x0080186a646eb2f73c8fb930c4477d978b42bb094b89baf3dae18eea99307d6b
- 0x0736048f82aec2b6271d333dcc2e3d6b83d61035358a6f0ae67b8db47875194c
- 0xf1d12da4d227242f97d9bc58d06140106dee16d6d541ebe113d7c7f6ab2d8b67
- 0xf042be8757f2f3ef070e717e38a7b0ad951d74298e721ac0b2e7855db790e392
- 0x40581185279a8bf075dca3a4c3a5648ec6f62098ba7402cbc097d5cc707e0840
- 0xab4e84d781dccd579dcf5c47a356a4a2e6cac58a2aefdf3543a3fa15238fa4db
- 0x74cf00e07b52415c2184cf20be69d195ed2725497a6892c2f3e449497c17d0ec
- 0x7a743a0a09057bae687051274e1d45bf973bd36a1a4ba16a191b5d29e3bdfa2a
- 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f
- Day root
- 0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e
- Chained
- 0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be
- Published
- On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae