← The evidence ledger
Evidence row 751139
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://api.findmydirectdoctor.com/v1/hospital-prices/codes
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- dfdbde3815fe275a6d4b28ae7878d6d7251fb01226b018ba323fa88c09c5cf71
- Leaf
- 0xe28bacc221e36d48a216f1f193957e1ea953d214619686fe85068d4a5e80908b
What was observed
{
"endpoints": [
[
"x402",
"https://api.findmydirectdoctor.com/v1/hospital-prices/codes"
]
],
"name": "FindMyDirectDoctor Directory API",
"owner_address": "0xdf0102f7e02be8e80212698c38180adae3e01365",
"raw": {
"accepts": [
{
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 60,
"network": "eip155:8453",
"payTo": "0xdF0102F7E02be8e80212698C38180ADAE3e01365",
"scheme": "exact"
}
],
"description": "Dictionary of the 28 hospital services in the price library. Lists each CPT or HCPCS billing code with a plain name, category and the everyday words people use, and maps words such as brain MRI without contrast to a code.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"q": "brain mri without contrast"
},
"type": "http"
},
"output": {
"example": {
"alternatives": [
{
"code": "70553",
"plain_name": "Brain MRI, with and without contrast",
"score": 0.8
}
],
"categories": [
"imaging",
"lab",
"emergency_room",
"heart_test",
"colonoscopy"
],
"data_as_of": "2026-10-02",
"how_to_use": "Pass code=<code> to the hospital price endpoints, or pass service=<plain words> and the same dictionary resolves it.",
"query": {
"format": "concise",
"q": "brain mri without contrast"
},
"resolved": {
"code": "70551",
"confidence": "exact",
"matched_phrase": "brain mri",
"plain_name": "Brain MRI, no contrast"
},
"services": [
{
"category": "imaging",
"code": "70551",
"hospitals_with_price": 3357,
"plain_name": "Brain MRI, no contrast",
"score": 1
},
{
"category": "imaging",
"code": "70553",
"hospitals_with_price": 3345,
"plain_name": "Brain MRI, with and without contrast",
"score": 0.8
},
{
"category": "imaging",
"code": "70450",
"hospitals_with_price": 3498,
"plain_name": "Head CT scan, no contrast",
"score": 0.533
},
{
"category": "imaging",
"code": "72148",
"hospitals_with_price": 3363,
"plain_name": "Lower back MRI, no contrast",
"score": 0.533
},
{
"category": "imaging",
"code": "73721",
"hospitals_with_price": 3325,
"plain_name": "Knee MRI, no contrast",
"score": 0.533
}
],
"source": "FindMyDirectDoctor Foundation hospital cash price library (hospital price files posted under the federal price transparency rule, 45 CFR 180)",
"total": 5
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"category": {
"description": "Only services in this category.",
"enum": [
"imaging",
"lab",
"emergency_room",
"heart_test",
"colonoscopy"
],
"type": "string"
},
"format": {
"default": "concise",
"description": "concise = key fields. detailed = every field.",
"enum": [
"concise",
"detailed"
],
"type": "string"
},
"q": {
"description": "Plain words to look up, for example brain mri without contrast. Returns the best code and close alternatives.",
"maxLength": 120,
"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"
},
"categories": {
"items": {
"type": "string"
},
"type": "array"
},
"data_as_of": {
"type": "string"
},
"how_to_use": {
"type": "string"
},
"message": {
"type": "string"
},
"query": {
"description": "The request as understood.",
"type": "object"
},
"resolved": {
"description": "The best code for q, or null when nothing matched.",
"properties": {
"code": {
"type": "string"
},
"confidence": {
"type": "string"
},
"matched_phrase": {
"type": [
"string",
"null"
]
},
"note": {
"type": "string"
},
"plain_name": {
"type": "string"
}
},
"type": [
"object",
"null"
]
},
"services": {
"items": {
"properties": {
"category": {
"type": "string"
},
"code": {
"type": "string"
},
"contrast": {
"type": "string"
},
"family": {
"type": "string"
},
"hospitals_with_price": {
"type": "integer"
},
"plain_name": {
"type": "string"
},
"score": {
"type": "number"
},
"synonyms": {
"items": {
"type": "string"
},
"type": "array"
}
},
"type": "object"
},
"type": "array"
},
"source": {
"type": "string"
},
"total": {
"type": "integer"
}
},
"required": [
"total",
"services",
"data_as_of"
],
"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": "2026-10-28T00:19:53.892Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-28T00:19:53.784Z"
},
"resource": "https://api.findmydirectdoctor.com/v1/hospital-prices/codes",
"serviceName": "FindMyDirectDoctor Directory API",
"tags": [
"healthcare",
"doctors",
"direct-primary-care",
"dpc",
"concierge-medicine"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Dictionary of the 28 hospital services in the price library. Lists each CPT or HCPCS billing code with a plain name, category and the everyday words people use, and maps words such as brain MRI without contrast to a code."
}What the leaf hashes
{"body":"dfdbde3815fe275a6d4b28ae7878d6d7251fb01226b018ba323fa88c09c5cf71","id":751139,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793178704919677,"prev":null,"subject":"x402_bazaar:https://api.findmydirectdoctor.com/v1/hospital-prices/codes","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).
- 0xe28b6cca159c4c1332827788d3d5079cf3d6b061a72ec9b32ae60ddaa543d789
- 0xb6328a5e7745fd671eb17479409697bc677c635fbf43214287425ce1c238c893
- 0xf7df6391dd385c74e9314acc19834715e1dbfbb5b115ac0f7fbd12c7772882ae
- 0xd04758a86df595839bd9362a5213467590a864c0f4226139069303990b4c132c
- 0xd9dba0675e360b8b539fbc57d37b72a0ff4a37681cbec288334fff4f15b05ae8
- 0x21c304c00365206fcdf8e49815c57ff376745c5b22ff15ce4947ea751daa1fbf
- 0xe80122d1a27895363ec0b3979852dd3ddbb00b64e9e7ddb19d9e86ee97801b84
- 0x64ec5c047c7e83de458c2018f3ce3dd586def699c7a18f63fc88934936f375bb
- 0xf6fcc0e63f1d42b6d8ef5fc5cb316eee0da931026a75a8afd809f185794e4ef7
- 0xc9aa6da4dde6487fe1540196f6c4b2443d3286cfce3bde927acead08857eb342
- 0x21410f57a07b077f71f7786f3b3f7ac6b88a75e45e1d67b844c2b1c33d40451b
- 0x3d7faf6d6e359691c768d36608730f2c96e845f58f9eed2ac5f019308b4b9e8e
- 0x79afb902f1839260cbf1ac61901b69548a18da2fafc9b65bd4dea5a65cd3ea7e
- 0x4c91c1a674a62931ce621a521121f13a2bd017a2cbd5ae2510623cd559d36663
- 0x334629b51e7dfb2339fa4fd14202e288d70dbaccb3e5b04d2d5fb8f0d489ce5e
- 0xef2ebd45f2cfd41dc3eb213cc4cc144c46b7e9ead2de0b9f627463bad16e3ec8
- 0x67e9ff3e48c515135fcf3df2675aa4996d35d4a328ce41588ee1a7d93347c823
- 0xe6cfe00ae4e02bc12327e45b5f3334ea5850ba3bcc8e3101d30a8189856a95af
- Day root
- 0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e
- Chained
- 0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be
- Published
- On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae