← The evidence ledger
Evidence row 218685
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://x402-niche-briefs.fly.dev/v1/eoq-holding-cost-optimizer
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 406ff830c350c54cf20748bc83e29a7b07c2f9e8a6409208603b0bbd9916bb8c
- Leaf
- 0xe6aa013babac9bad7e670c85423b8db54b9d7c2b6cbd0e38d000e521192415f0
What was observed
{
"endpoints": [
[
"x402",
"https://x402-niche-briefs.fly.dev/v1/eoq-holding-cost-optimizer"
]
],
"name": "EOQ & holding-cost optimizer",
"owner_address": "0x847f54ae8ddfd71ed7bc930c1f7a73576fab03a9",
"raw": {
"accepts": [
{
"amount": "10000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x847f54ae8dDFD71ed7bC930C1f7a73576FAb03A9",
"scheme": "exact"
}
],
"description": "Economic order quantity and annual cost.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"annual_demand": "12000",
"holding_pct": "25",
"order_cost_usd": "150",
"unit_cost_usd": "8"
},
"type": "http"
},
"output": {
"example": {
"annual_holding_cost_usd": 1341.64,
"annual_order_cost_usd": 1341.64,
"as_of": "2026-10-25",
"eoq_units": 1342,
"input": {
"annual_demand": 12000,
"holding_pct": 25,
"order_cost_usd": 150,
"unit_cost_usd": 8
},
"orders_per_year": 8.94
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"annual_demand": {
"description": "Annual units",
"type": "string"
},
"holding_pct": {
"description": "Holding %/yr",
"type": "string"
},
"order_cost_usd": {
"description": "Cost per order",
"type": "string"
},
"unit_cost_usd": {
"description": "Unit cost",
"type": "string"
}
},
"required": [
"annual_demand",
"order_cost_usd",
"unit_cost_usd",
"holding_pct"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"annual_holding_cost_usd": {
"type": "number"
},
"annual_order_cost_usd": {
"type": "number"
},
"as_of": {
"type": "string"
},
"eoq_units": {
"type": "number"
},
"input": {
"properties": {
"annual_demand": {
"type": "number"
},
"holding_pct": {
"type": "number"
},
"order_cost_usd": {
"type": "number"
},
"unit_cost_usd": {
"type": "number"
}
},
"required": [
"annual_demand",
"order_cost_usd",
"unit_cost_usd",
"holding_pct"
],
"type": "object"
},
"orders_per_year": {
"type": "number"
}
},
"required": [
"input",
"eoq_units",
"orders_per_year",
"annual_order_cost_usd",
"annual_holding_cost_usd",
"as_of"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-26T11:04:00.667Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-26T11:04:00.504Z"
},
"resource": "https://x402-niche-briefs.fly.dev/v1/eoq-holding-cost-optimizer",
"serviceName": "EOQ & holding-cost optimizer",
"tags": [
"supply-chain",
"inventory"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Economic order quantity and annual cost."
}What the leaf hashes
{"body":"406ff830c350c54cf20748bc83e29a7b07c2f9e8a6409208603b0bbd9916bb8c","id":218685,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793026639960479,"prev":null,"subject":"x402_bazaar:https://x402-niche-briefs.fly.dev/v1/eoq-holding-cost-optimizer","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).
- 0xe6a993216c6f8176a23c125d39e3833fbe14208aa8716226ac31d01151efb697
- 0x0c8f5fbb44ecd0759d30061c189fba44647dc5a46a1580ddccb13f011407e14f
- 0xbabf370980316e673a7120845d216f18c6b4098b32bf6583d8a683032c6d3073
- 0x0ad24b73ff5714daa7ef69a680ccdc54a2075ddf11767680e3e4a8bbb0a8b4b1
- 0x8193231f08f1da06199c7607cd9eff8e6b5eb4378218439c68522df1ece0b2f8
- 0xb67f069997f549dffebe11206d062f814f58a015b71fd6a4cdf5dba78136c378
- 0x9787860490f0c22ccd733042fa8c7c0ebef7fe7b7b1c57c20f428deb109afc05
- 0x83a130268d0710cf9e0d0738961cfc7172401a67d090afacecd18970d03b244c
- 0x0acadf2a5ea10302cda86f39380eb997d6d096d07ca5029f10cf76e8265aa051
- 0x17252ea35c135aec37ce7f1ed706d7c9275dd2e41b9d9e8c21d84f8d686b33ff
- 0xe9a46d294851ae0e362ab741d0ad8768d3bfeeb15a9d9fcc78aae5128fc33835
- 0xb866b513dd861c870688f5d1a8e434b170eaa2fafb0961d6a674d452b8e58381
- 0xafcc1fe54cfe00a3a1de33df127340075f22433bb89848bbc81499cd7aca5b2b
- 0x9bc5fc98278b9f6dc18c66c6e162aefd5244be03170d41bc5161f58ad11beed7
- 0x95657a7d540ed6cac0bde9995782333b2562a9a6641853269ac95148827410f0
- 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
- 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae