← The evidence ledger
Evidence row 64259
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://agri.halowerk.com/v1/fertilizer-map
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 94cea701d0477523368d00701a42918bb05fc69fb9cb47d425feeed6f9daebcd
- Leaf
- 0xd0ae7dbf7b479ca963ceafdd07bdf1c2664ef88ace7df456af29570eab8e41fc
What was observed
{
"endpoints": [
[
"x402",
"https://agri.halowerk.com/v1/fertilizer-map"
]
],
"name": "agri.halowerk.com/v1/fertilizer-map",
"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": "For each field cell, subtracts measured available nutrient from a supplied target and divides positive deficits by an explicit recovery fraction. It reports per-hectare rates and area totals. It does not infer crop targets, validate laboratory samples, account for nutrient chemistry or constitute an agronomic application prescription.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"cells": [
{
"area_hectares": 2.5,
"available_kg_per_ha": {
"nitrogen": 55,
"phosphorus": 21,
"potassium": 92
},
"cell_id": "north-01",
"target_kg_per_ha": {
"nitrogen": 90,
"phosphorus": 30,
"potassium": 110
}
},
{
"area_hectares": 1.8,
"available_kg_per_ha": {
"nitrogen": 76,
"phosphorus": 33,
"potassium": 105
},
"cell_id": "north-02",
"target_kg_per_ha": {
"nitrogen": 90,
"phosphorus": 30,
"potassium": 110
}
}
],
"maximum_rate_kg_per_ha": {
"nitrogen": 80,
"phosphorus": 40,
"potassium": 60
},
"recovery_fraction": {
"nitrogen": 0.65,
"phosphorus": 0.35,
"potassium": 0.75
}
},
"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": {
"cells": {
"items": {
"additionalProperties": false,
"properties": {
"area_hectares": {
"maximum": 1000000,
"minimum": 0.0001,
"type": "number"
},
"available_kg_per_ha": {
"additionalProperties": false,
"properties": {
"nitrogen": {
"maximum": 100000,
"minimum": 0,
"type": "number"
},
"phosphorus": {
"maximum": 100000,
"minimum": 0,
"type": "number"
},
"potassium": {
"maximum": 100000,
"minimum": 0,
"type": "number"
}
},
"required": [
"nitrogen",
"phosphorus",
"potassium"
],
"type": "object"
},
"cell_id": {
"maxLength": 128,
"minLength": 1,
"type": "string"
},
"target_kg_per_ha": {
"additionalProperties": false,
"properties": {
"nitrogen": {
"maximum": 100000,
"minimum": 0,
"type": "number"
},
"phosphorus": {
"maximum": 100000,
"minimum": 0,
"type": "number"
},
"potassium": {
"maximum": 100000,
"minimum": 0,
"type": "number"
}
},
"required": [
"nitrogen",
"phosphorus",
"potassium"
],
"type": "object"
}
},
"required": [
"cell_id",
"area_hectares",
"available_kg_per_ha",
"target_kg_per_ha"
],
"type": "object"
},
"maxItems": 10000,
"minItems": 1,
"type": "array"
},
"maximum_rate_kg_per_ha": {
"additionalProperties": false,
"properties": {
"nitrogen": {
"maximum": 100000,
"minimum": 0,
"type": "number"
},
"phosphorus": {
"maximum": 100000,
"minimum": 0,
"type": "number"
},
"potassium": {
"maximum": 100000,
"minimum": 0,
"type": "number"
}
},
"required": [
"nitrogen",
"phosphorus",
"potassium"
],
"type": "object"
},
"recovery_fraction": {
"additionalProperties": false,
"properties": {
"nitrogen": {
"maximum": 1,
"minimum": 0.01,
"type": "number"
},
"phosphorus": {
"maximum": 1,
"minimum": 0.01,
"type": "number"
},
"potassium": {
"maximum": 1,
"minimum": 0.01,
"type": "number"
}
},
"required": [
"nitrogen",
"phosphorus",
"potassium"
],
"type": "object"
}
},
"required": [
"cells",
"recovery_fraction",
"maximum_rate_kg_per_ha"
],
"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": "2026-10-06T12:37:23.78Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-06T12:37:23.351Z"
},
"resource": "https://agri.halowerk.com/v1/fertilizer-map",
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "For each field cell, subtracts measured available nutrient from a supplied target and divides positive deficits by an explicit recovery fraction. It reports per-hectare rates and area totals. It does not infer crop targets, validate laboratory samples, account for nutrient chemistry or constitute an agronomic application prescription."
}What the leaf hashes
{"body":"94cea701d0477523368d00701a42918bb05fc69fb9cb47d425feeed6f9daebcd","id":64259,"kind":"listing","method":"baseline/1","observed_us":1793025456382813,"prev":null,"subject":"x402_bazaar:https://agri.halowerk.com/v1/fertilizer-map","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).
- 0xd0ae013172db2ea1599674d1d0cbb25a5bfc953b4cce42d87eaede7ddd886488
- 0x251e2609d68de5a7825f1b9632e55f1dd5de39485bd11f6ecf8a58c9724cf79b
- 0x19333823fa90147b112bf0a184cf4640b95b427b00eeca2e4fb321442c642240
- 0x0f1ce10488a19efb72ccf8166f493edb505fcf912dfa7587d3160196cae5d701
- 0x5dde4fd85d15921fcdd1e45553ef71a503dca8584f7f7249dd6b334cd757f90c
- 0x4c9e7c8f566d548713e88da8a0e93b18221382aae5217a4217cad063e60cd5cc
- 0xe285341111f643b0c6236691b4024e61aaac9b87f5fed69beb0ac25cbf9f4553
- 0x821c400cc4fd4406338c8fa6bf5ca213aaa065b553209b9668116eb55b5db853
- 0xa0d616381ed0c5c291a07abe0af20c8c7fbe3ccaa464a8d253b56a1b36373a26
- 0x0f53b93a25a2f186fd221bd4e152ef492b0cc841c0b870210a5fd6038ba3602e
- 0xcbb746ffeda31ff1f1b0d9f74705fed23a3c2abac5d325d65e8e867a7b5e6307
- 0xa4ec009cd8db00b48fa2e4df84088950b4d34c37254de09f5e3789441c0c5e73
- 0x889eefefef2d4457fe6114f397df813a5cbb85011a6f40309b54ddcd4aba3bd1
- 0xefabf1105e09cf52c12c58e60cbb5048b9ac3f02631d1816a926e14bdd86fbdf
- 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
- 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
- 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae