← The evidence ledger
Evidence row 120002
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://saylorinnovations.com/api/health/county-health
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 85462dc83dc23f4f74d5e9aa3a3890dc6d9a999d3e09af2ce374c00b07749f58
- Leaf
- 0x31924d53a0d05ff819a95fa11f35e573a83b86ad3fe403d5fb64757c02300e20
What was observed
{
"endpoints": [
[
"x402",
"https://saylorinnovations.com/api/health/county-health"
]
],
"name": "Saylor Innovations Data Desk",
"owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
"raw": {
"accepts": [
{
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:datadesk:county-health",
"name": "USD Coin",
"note": "Base settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:8453",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:datadesk:county-health",
"name": "USD Coin",
"note": "Polygon settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:137",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:datadesk:county-health",
"name": "USD Coin",
"note": "Arbitrum settles through an x402 facilitator. Send payload.signature and payload.authorization (EIP-3009); there is no self-submitted path on this network.",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:42161",
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"memo": "saylor:datadesk:county-health",
"reference": "bjL7PKrjrbrw8misMmks17PayDfgwmJgyJLik3w1Zpt",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjb3VudHktaGVhbHRoIiwicmVmZXJlbmNlIjoiYmpMN1BLcmpyYnJ3OG1pc01ta3MxN1BheURmZ3dtSmd5SkxpazN3MVpwdCIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVQakZXZGQ1QXVmcVNTcWVNMnFOMXh6eWJhcEM4RzR3RUdHa1p3eVREdDF2IiwibWluQW1vdW50IjoxMDAwMCwiZXhwIjoxNzkyNTc0MDQ4MzYyfQ.-mtcxG-jxr2YU0ovZ3Ig4ptleAZlbxdg2BAG9-7ebN8"
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
"memo": "saylor:datadesk:county-health",
"reference": "HNExa4MqJLz4D1fdZJLZa7K2Rqok3c9gsuDy6VXKH6dC",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjb3VudHktaGVhbHRoIiwicmVmZXJlbmNlIjoiSE5FeGE0TXFKTHo0RDFmZFpKTFphN0syUnFvazNjOWdzdUR5NlZYS0g2ZEMiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOiJFczl2TUZyemFDRVJtSmZyRjRIMkZZRDRLQ29Oa1kxMU1jQ2U4QmVud05ZQiIsIm1pbkFtb3VudCI6MTAwMDAsImV4cCI6MTc5MjU3NDA0ODM2Mn0.pEahTdVca_NIFgmMtkj6CnFyA-07jj_xhoW-SUlZIvk"
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
},
{
"amount": "90899",
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:datadesk:county-health",
"native": true,
"note": "Native SOL: send lamports with a system transfer, not an SPL transfer. Price is quoted live and this quote expires in 120s.",
"quotedLamports": "93711",
"reference": "8YNbRmBwK5u7BrQ7fWP8V3KCEGDfjBxL3uWg1e2JY8kd",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjb3VudHktaGVhbHRoIiwicmVmZXJlbmNlIjoiOFlOYlJtQndLNXU3QnJRN2ZXUDhWM0tDRUdEZmpCeEwzdVdnMWUySlk4a2QiLCJyZWNpcGllbnQiOiI3TFNqZnJKZjhmTnNCOFZBOXU3TjNXRW4yNXNtUUxwb2IzU3Z5VXZYYWN5NyIsIm1pbnQiOm51bGwsIm1pbkFtb3VudCI6OTA4OTksImV4cCI6MTc5MjU3NDA0ODM2Mn0.pNRuIlggikxmr07340hsexfJj95gOHfKjoKXMENjGXg",
"solUsdPrice": 106.71
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
}
],
"description": "US county health statistics from CDC PLACES - diabetes, obesity, depression, smoking, insurance and 30+ more measures, or rank a state's counties",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"county": "Travis",
"state": "TX"
},
"type": "http"
},
"output": {
"example": {
"adult_population": 1071849,
"county": "Travis",
"county_fips": "48453",
"measure_count": 28,
"measures": [
{
"category": "Disability",
"ci_high": 27,
"ci_low": 20.6,
"measure": "Any disability among adults",
"measure_id": "DISABILITY",
"value_percent": 23.8
},
{
"category": "Disability",
"ci_high": 13.8,
"ci_low": 10.2,
"measure": "Cognitive disability among adults",
"measure_id": "COGNITION",
"value_percent": 11.9
},
{
"category": "Disability",
"ci_high": 6,
"ci_low": 4.6,
"measure": "Hearing disability among adults",
"measure_id": "HEARING",
"value_percent": 5.3
}
],
"mode": "county",
"population": 1334961,
"prevalence_type": "Age-adjusted prevalence",
"source": "CDC PLACES: Local Data for Better Health, County Data, 2025 release (data.cdc.gov dataset swc5-untb), public domain. Model-based estimates from BRFSS and Census data, not a survey of each county.",
"state": "TX",
"state_name": "Texas",
"year": 2023
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"county": {
"description": "optional county name such as Travis; returns every PLACES measure for it",
"type": "string"
},
"state": {
"description": "US state as TX or Texas",
"type": "string"
}
},
"required": [
"state"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"adult_population": {
"description": "Adults aged 18 and over (county mode)",
"type": [
"number",
"null"
]
},
"category": {
"description": "Category of the ranked measure (ranking mode)"
},
"counties_with_data": {
"description": "Counties in the state with an estimate (ranking mode)"
},
"county": {
"description": "County name as published by the CDC (county mode)",
"type": "string"
},
"county_fips": {
"description": "5-digit county FIPS code (county mode)",
"type": "string"
},
"highest": {
"description": "Counties with the highest values, highest first (ranking mode)"
},
"lowest": {
"description": "Counties with the lowest values, lowest first (ranking mode)"
},
"measure": {
"description": "Plain-language name of the ranked measure (ranking mode)"
},
"measure_count": {
"description": "Number of measures returned for the county",
"type": "number"
},
"measure_id": {
"description": "PLACES measure id that was ranked (ranking mode)"
},
"measures": {
"description": "One entry per health measure, grouped by category (county mode)",
"items": {
"properties": {
"category": {
"description": "Health Outcomes, Prevention, Health Risk Behaviors, Disability, Health Status or Health-Related Social Needs",
"type": [
"string",
"null"
]
},
"ci_high": {
"description": "Upper bound of the 95% confidence interval",
"type": [
"number",
"null"
]
},
"ci_low": {
"description": "Lower bound of the 95% confidence interval",
"type": [
"number",
"null"
]
},
"measure": {
"description": "What the percentage measures, in plain words",
"type": [
"string",
"null"
]
},
"measure_id": {
"description": "PLACES measure id, usable as the measure filter",
"type": [
"string",
"null"
]
},
"value_percent": {
"description": "Estimated percent of adults",
"type": [
"number",
"null"
]
}
},
"type": "object"
},
"type": "array"
},
"mode": {
"description": "county (every measure for one county) or ranking (a state's counties for one measure)",
"type": "string"
},
"population": {
"description": "County population (county mode)",
"type": [
"number",
"null"
]
},
"prevalence_type": {
"description": "Age-adjusted prevalence (comparable across counties) or Crude prevalence (raw share)",
"type": "string"
},
"source": {
"description": "Dataset, release and modelling caveat",
"type": "string"
},
"state": {
"description": "2-letter state code",
"type": "string"
},
"state_median_percent": {
"description": "Median county value in the state (ranking mode)"
},
"state_name": {
"description": "Full state name",
"type": "string"
},
"year": {
"description": "Survey year the estimates describe",
"type": "number"
}
},
"required": [
"mode",
"state",
"year",
"source"
],
"type": "object"
},
"type": {
"const": "json",
"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/v1791811517/bazaar-icons/bc5e2b3d111ebbef.jpg",
"lastUpdated": "2026-10-21T09:12:08.446Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-21T09:12:08.23Z"
},
"resource": "https://saylorinnovations.com/api/health/county-health",
"serviceName": "Saylor Innovations Data Desk",
"tags": [
"county health statistics",
"diabetes rate by county",
"obesity rate by county",
"cdc places county data",
"health indicators by county"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "US county health statistics from CDC PLACES - diabetes, obesity, depression, smoking, insurance and 30+ more measures, or rank a state's counties"
}What the leaf hashes
{"body":"85462dc83dc23f4f74d5e9aa3a3890dc6d9a999d3e09af2ce374c00b07749f58","id":120002,"kind":"listing","method":"baseline/1","observed_us":1793025617063897,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/health/county-health","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).
- 0x31924df1ca43393ff8b5108e5fb54b1f5b25956f4b891af517b3d38bee9df3e6
- 0xd801f0111edb623d46517ab154c3886d730821bd948fff259a7f2a160c95ed31
- 0x9959affec9ed219829f35b5aade55c2ac698a39f78d5c805c8b21b5a4bad0a3b
- 0x8b0686f061b506519604ee5aaf5e5bd5d5b07566476f1277ec269b03790e0ad4
- 0x5a2598cea5446b13055da1a370355d4e04af618bd3142770372c4410cee0b1cb
- 0x378f182230ad274b46d1804639faca501c15595df87f27ffa1a49ec6668ad202
- 0xbc94c41137c2482fd62a192fdf0f147047c424494d7c0b46a4d0b3bff28a284c
- 0x1703d03e3de83b4bdd9dba9858f64c01dfaee687cc514071accf66a92d2cdc23
- 0x613500380e43be1caef6863c8284ae35ee54e583bef15a3ad625d3cb9130b0df
- 0x057c932588a31dcb53ff6fe6c091dc26556fcd6faea2eb4cdb4ac1d3f596f1e3
- 0xa4cc17a7ce78f05039820f0a50d323cd0bedd23c37338f2719d249dca75c07ec
- 0xd85c7204d76d26255c94ef4caa12c05addd08238caa5cdc3888ea60b74e6b940
- 0x36a44931b230976c04691d90bf3a25ed4111d74c78b672850d8025a911ca88dd
- 0x683955a5b2250ad50568d022a6580d8739b6aff1356779d72a773b088e7c289c
- 0x610738e0c43687aded83c613c73de8b5226c73c375858a167436461c522ea213
- 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
- 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae