← The evidence ledger
Evidence row 120001
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://saylorinnovations.com/api/health/causes-of-death
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 85d4efd2256bd4ca2ddfbddf2ba9523431d9beddfabfa339be220c7d1941427b
- Leaf
- 0x310c859001c45a51ec85966f21792b2d3a36e0e6e0d61e8a82f0ac92e37631ef
What was observed
{
"endpoints": [
[
"x402",
"https://saylorinnovations.com/api/health/causes-of-death"
]
],
"name": "Saylor Innovations Data Desk",
"owner_address": "0xa2a8df0f7caabea4e120a2568118f141569fc8aa",
"raw": {
"accepts": [
{
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"assetTransferMethod": "eip3009",
"facilitatorOnly": true,
"memo": "saylor:datadesk:causes-of-death",
"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:causes-of-death",
"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:causes-of-death",
"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": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88",
"memo": "saylor:datadesk:causes-of-death",
"reference": "A6fUT17C18tchyKRxUxSMho6VZ1emqTsirNN2uzG2GE1",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjYXVzZXMtb2YtZGVhdGgiLCJyZWZlcmVuY2UiOiJBNmZVVDE3QzE4dGNoeUtSeFV4U01obzZWWjFlbXFUc2lyTk4ydXpHMkdFMSIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVQakZXZGQ1QXVmcVNTcWVNMnFOMXh6eWJhcEM4RzR3RUdHa1p3eVREdDF2IiwibWluQW1vdW50IjoxMDAwMCwiZXhwIjoxNzkyNzU3MDA2MzQxfQ.UWXQOfKUgo-9l0dRSsQa8N2NL0FQG-Y3eNZu-1rLXJA"
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
},
{
"amount": "10000",
"asset": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88",
"memo": "saylor:datadesk:causes-of-death",
"reference": "8ejdpGiTHLZkCGNxohMgfPPj6TkBrvS1YLRtyXh5x789",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjYXVzZXMtb2YtZGVhdGgiLCJyZWZlcmVuY2UiOiI4ZWpkcEdpVEhMWmtDR054b2hNZ2ZQUGo2VGtCcnZTMVlMUnR5WGg1eDc4OSIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6IkVzOXZNRnJ6YUNFUm1KZnJGNEgyRllENEtDb05rWTExTWNDZThCZW53TllCIiwibWluQW1vdW50IjoxMDAwMCwiZXhwIjoxNzkyNzU3MDA2MzQxfQ.IhBRmaZp9pNiTgYiYN--wyuzr4G02Hlb3sKqVNbyYLo"
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
},
{
"amount": "92866",
"asset": "So11111111111111111111111111111111111111112",
"extra": {
"memo": "saylor:datadesk:causes-of-death",
"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": "95739",
"reference": "CcnTvP8wZeDUrEACxvfaTX8TnqbgNGAiXk9rw4n9Zcwx",
"session": "eyJhcnRpY2xlSWQiOiJkYXRhZGVzazpjYXVzZXMtb2YtZGVhdGgiLCJyZWZlcmVuY2UiOiJDY25UdlA4d1plRFVyRUFDeHZmYVRYOFRucWJnTkdBaVhrOXJ3NG45WmN3eCIsInJlY2lwaWVudCI6IjdMU2pmckpmOGZOc0I4VkE5dTdOM1dFbjI1c21RTHBvYjNTdnlVdlhhY3k3IiwibWludCI6bnVsbCwibWluQW1vdW50Ijo5Mjg2NiwiZXhwIjoxNzkyNzU3MDA2MzQxfQ.pByc6ZWfBt5kM_WByi9Itm2IU-zfXRLDyDnQ3AtAy_8",
"solUsdPrice": 104.45
},
"maxTimeoutSeconds": 120,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "7LSjfrJf8fNsB8VA9u7N3WEn25smQLpob3SvyUvXacy7",
"scheme": "exact"
}
],
"description": "Leading causes of death for any US state or the nation - deaths, share of all deaths and age-adjusted rates for heart disease, cancer, stroke and more",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"state": "TX",
"year": "2017"
},
"type": "http"
},
"output": {
"example": {
"all_causes_age_adjusted_rate_per_100k": 735.7,
"cause_count": 10,
"causes": [
{
"age_adjusted_death_rate_per_100k": 169.2,
"cause": "Heart disease",
"deaths": 45346,
"icd_group": "Diseases of heart (I00-I09,I11,I13,I20-I51)",
"rank": 1,
"share_of_all_deaths_percent": 22.9
},
{
"age_adjusted_death_rate_per_100k": 146.5,
"cause": "Cancer",
"deaths": 40668,
"icd_group": "Malignant neoplasms (C00-C97)",
"rank": 2,
"share_of_all_deaths_percent": 20.5
},
{
"age_adjusted_death_rate_per_100k": 41.3,
"cause": "Stroke",
"deaths": 10790,
"icd_group": "Cerebrovascular diseases (I60-I69)",
"rank": 3,
"share_of_all_deaths_percent": 5.4
}
],
"note": "The ten leading causes in the NCHS file, ranked by deaths. Age-adjusted rates make states with different age mixes comparable. This CDC series ends at 2017.",
"source": "CDC NCHS, Leading Causes of Death: United States (data.cdc.gov dataset bi63-dtpu), public domain",
"state": "TX",
"state_name": "Texas",
"top_cause": "Heart disease",
"total_deaths": 198106,
"year": 2017
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"state": {
"description": "optional US state as TX or Texas, or US for the national total (default US)",
"type": "string"
},
"year": {
"description": "optional 1999-2017, default 2017 (the latest year in the CDC file)",
"type": "string"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"all_causes_age_adjusted_rate_per_100k": {
"description": "Age-adjusted death rate from all causes per 100,000 people",
"type": [
"number",
"null"
]
},
"cause_count": {
"description": "Number of causes ranked",
"type": "number"
},
"causes": {
"description": "Leading causes, most deaths first",
"items": {
"properties": {
"age_adjusted_death_rate_per_100k": {
"description": "Age-adjusted rate per 100,000, comparable across states",
"type": [
"number",
"null"
]
},
"cause": {
"description": "Plain-language cause name",
"type": [
"string",
"null"
]
},
"deaths": {
"description": "Deaths from that cause",
"type": [
"number",
"null"
]
},
"icd_group": {
"description": "ICD-10 grouping the CDC counted under that cause",
"type": [
"string",
"null"
]
},
"rank": {
"description": "Rank by number of deaths",
"type": [
"number",
"null"
]
},
"share_of_all_deaths_percent": {
"description": "This cause as a percent of all deaths",
"type": [
"number",
"null"
]
}
},
"type": "object"
},
"type": "array"
},
"note": {
"description": "What the ranking covers and where the CDC series ends",
"type": "string"
},
"source": {
"description": "Dataset the numbers come from and its license",
"type": "string"
},
"state": {
"description": "2-letter state code, or US for the national total",
"type": "string"
},
"state_name": {
"description": "Full jurisdiction name",
"type": "string"
},
"top_cause": {
"description": "Cause with the most deaths",
"type": [
"string",
"null"
]
},
"total_deaths": {
"description": "All deaths in that state and year",
"type": [
"number",
"null"
]
},
"year": {
"description": "Year of the death certificates",
"type": "number"
}
},
"required": [
"state",
"year",
"causes"
],
"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": "2026-10-23T12:01:26.375Z",
"quality": {
"l30DaysTotalCalls": 5,
"l30DaysUniquePayers": 4,
"lastCalledAt": "2026-10-23T12:01:25.947Z"
},
"resource": "https://saylorinnovations.com/api/health/causes-of-death",
"serviceName": "Saylor Innovations Data Desk",
"tags": [
"leading causes of death",
"top causes of death by state",
"heart disease deaths by state",
"cancer deaths per state",
"cdc mortality statistics"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Leading causes of death for any US state or the nation - deaths, share of all deaths and age-adjusted rates for heart disease, cancer, stroke and more"
}What the leaf hashes
{"body":"85d4efd2256bd4ca2ddfbddf2ba9523431d9beddfabfa339be220c7d1941427b","id":120001,"kind":"listing","method":"baseline/1","observed_us":1793025617062433,"prev":null,"subject":"x402_bazaar:https://saylorinnovations.com/api/health/causes-of-death","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).
- 0x310d77c88a6edd840c2e10feb53fb04f033e9896024e27b1edfdedb78b246792
- 0x1f9eed5736e4a48763e4b23c6b04993bdf874ddfc3a4e1521399ac43f8a4ad26
- 0x0d148fe8fbdc86eb90467db67c7a105418fb8843a07ebadaa089c951cafa5a3f
- 0x0ea7da708cc2f8fa25b912ca72c675038ce1858ff28e9845dea603a234860e94
- 0xe25076f1ba6d17008510a9a0b2e191a74d1aaaddded5b2ad862ade602e6f6b4d
- 0x1ba48cb0de237251265b1330f5e2e1b90f2a2da0e1aa06e24d81093fcb872085
- 0x7c43416b94f8d1445a722a1b199707def12609d508eb085324687a43192cdd2c
- 0x601acc1f6916638bb01d5bcf2c459be2a7acf82dc17b35688653eab2d7d088d0
- 0x41adad128d0ed6c60b71cfa779d003d6b8c9aa7d92fd944c183a1986ddb6ba1f
- 0x14dcc9b621776bab010784ab2ff8bc9cde2e6118dc9a5e1e68af1ab2b33794cd
- 0xa4cc17a7ce78f05039820f0a50d323cd0bedd23c37338f2719d249dca75c07ec
- 0xd85c7204d76d26255c94ef4caa12c05addd08238caa5cdc3888ea60b74e6b940
- 0x36a44931b230976c04691d90bf3a25ed4111d74c78b672850d8025a911ca88dd
- 0x683955a5b2250ad50568d022a6580d8739b6aff1356779d72a773b088e7c289c
- 0x610738e0c43687aded83c613c73de8b5226c73c375858a167436461c522ea213
- 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
- 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
- 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae