← The evidence ledger
Evidence row 118783
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://prop.halowerk.com/v1/flood-risk-asset
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 6b10eceedd89e4ad65b7bb375e154750a53fb5ffc344704699d198c7372ed086
- Leaf
- 0xcc04c1b69b50a38b8e08c3302b20141423b01df5105d313555112d33777b807a
What was observed
{
"endpoints": [
[
"x402",
"https://prop.halowerk.com/v1/flood-risk-asset"
]
],
"name": "prop.halowerk.com/v1/flood-risk-asset",
"owner_address": "0x2880edfff13100677bf97a3cbdf3bc34771c4e5e",
"raw": {
"accepts": [
{
"amount": "4000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"currency": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"asset": "USDC",
"assetTransferMethod": "eip3009",
"eip712Domain": {
"chainId": 8453,
"name": "USD Coin",
"verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"version": "2"
},
"name": "USD Coin",
"network_name": "Base Mainnet",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"recipient": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"scheme": "exact"
}
],
"description": "Multiplies each mutually exclusive supplied scenario probability by its supplied damage fraction and asset replacement value, then sums expected loss. It does not obtain hazard maps, model hydrology, validate damage curves, price insurance or predict a particular event.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"asset_replacement_value": 2800000,
"scenarios": [
{
"annual_probability": 0.1,
"inundation_depth_m": 0.2,
"scenario_id": "frequent-shallow",
"supplied_damage_fraction": 0.03
},
{
"annual_probability": 0.01,
"inundation_depth_m": 1.4,
"scenario_id": "rare-deep",
"supplied_damage_fraction": 0.38
}
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"asset_replacement_value": {
"description": "Value in a caller-selected currency.",
"maximum": 1000000000000000,
"minimum": 0,
"type": "number"
},
"scenarios": {
"items": {
"additionalProperties": false,
"properties": {
"annual_probability": {
"maximum": 1,
"minimum": 0,
"type": "number"
},
"inundation_depth_m": {
"maximum": 1000,
"minimum": 0,
"type": "number"
},
"scenario_id": {
"maxLength": 128,
"minLength": 1,
"type": "string"
},
"supplied_damage_fraction": {
"maximum": 1,
"minimum": 0,
"type": "number"
}
},
"required": [
"scenario_id",
"annual_probability",
"inundation_depth_m",
"supplied_damage_fraction"
],
"type": "object"
},
"maxItems": 10000,
"minItems": 1,
"type": "array"
}
},
"required": [
"asset_replacement_value",
"scenarios"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-08T06:12:40.084Z",
"quality": {
"l30DaysTotalCalls": 3,
"l30DaysUniquePayers": 3,
"lastCalledAt": "2026-10-08T06:12:39.87Z"
},
"resource": "https://prop.halowerk.com/v1/flood-risk-asset",
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Multiplies each mutually exclusive supplied scenario probability by its supplied damage fraction and asset replacement value, then sums expected loss. It does not obtain hazard maps, model hydrology, validate damage curves, price insurance or predict a particular event."
}What the leaf hashes
{"body":"6b10eceedd89e4ad65b7bb375e154750a53fb5ffc344704699d198c7372ed086","id":118783,"kind":"listing","method":"baseline/1","observed_us":1793025613710674,"prev":null,"subject":"x402_bazaar:https://prop.halowerk.com/v1/flood-risk-asset","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).
- 0xcc04bdc1e6580ccdafb96e8b72a82bf197f6426c45829a45778e4f41d269abd0
- 0x901d71ec3f79fac210a46c4ade6492bec2b20d1b5a14ff787db9d679c5139105
- 0xbb58aa7a2ad1010b5be34ccfe5534b33e1de7e4e53ec6179a42c54bf0fe1105d
- 0xf950b9974dd422b841853ad7ce92627910eeccc9c889ff134879438126426610
- 0xb9c54a27c866504e3a70599da591048f25bf19294d962c0910c075a9337f11d5
- 0x991b93b4d3da6aab7d8419bf12a4be36ab1ce50cb0a231452204e3c6828394ef
- 0x808dfdbfd8fa80bcfcc043969e335c7fa4860be9865c98f08b2c55e9eaef7b7a
- 0x50097f72f9019614fa93d776bdc340db88d44c142495ec0a6c2e661adb5593e2
- 0x726a778fce960a500e0adbf8806224f8f312af0012d5eb4d9f9c196fb4aadd2e
- 0x271656ddeb4ac114157823f5b692e3080e2fc3456a434600ab85e26da37fbbb5
- 0x351a777a477836c8c26972f993b4d53df3d67c6acea7cef50b5038df678d6a3f
- 0x85ea84dc356483b05e7ec8ed6e303988684070a1512dc756c8e64a7e3604feaf
- 0x985acd37cc044d5aa6ad959194da8e91c81045df83517891ed92f1763a9ab825
- 0x5b20d8aab05225a3497eadcce89d2e2a586a510fb31334793d3f46f88f0157c5
- 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
- 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
- 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae