← The evidence ledger
Evidence row 73185
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://data.spencermcw.com/v1/medicare/partd/changes
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 306a416a3077297f19f8f32e293788534cdc4758f1d96db70096aac00a257de1
- Leaf
- 0x7f6601001dd56bfba997ed94f8a0a7e41038b5899041066f0b2a0320d5e8a0ea
What was observed
{
"endpoints": [
[
"x402",
"https://data.spencermcw.com/v1/medicare/partd/changes"
]
],
"name": "data.spencermcw.com/v1/medicare/partd/changes",
"owner_address": "0xe6900ae625875b748f56fb45c3e06a59be8870df",
"raw": {
"accepts": [
{
"amount": "50000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0xE6900aE625875b748f56Fb45C3e06a59Be8870DF",
"scheme": "exact"
}
],
"description": "Which Medicare Part D formularies changed this month? Drugs added or dropped, tier, prior-authorization, step-therapy and quantity-limit changes and plan premium changes, computed by Distill from CMS’s monthly formulary files. Updated monthly. $0.05 per call (x402, USDC on Base); 3 free calls a day.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"entity": "formulary",
"key": "2723345",
"limit": 2
},
"type": "http"
},
"output": {
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"data": {
"next_cursor": "962",
"records": [
{
"detected_at": "2026-10-21T06:36:03.486Z",
"entity": "formulary",
"field": "tier",
"id": "814",
"key": "00026059:2723345",
"method_version": "medicare.partd@1.0.0",
"new": "3",
"old": "5",
"plan_year": 2026,
"released": "2026-09-16",
"source_sha256_new": "51d0d4177f00458ef420da1491f91f2e4f0a17dc11c253232a9bcc06572d21f2",
"source_sha256_old": "37532d0916c7b5f348123e993b8eb8c76f08c97d70c099cb1fc6f6b3cdacb696"
},
{
"detected_at": "2026-10-21T06:36:03.486Z",
"entity": "formulary",
"field": "tier",
"id": "962",
"key": "00026063:2723345",
"method_version": "medicare.partd@1.0.0",
"new": "3",
"old": "4",
"plan_year": 2026,
"released": "2026-09-16",
"source_sha256_new": "51d0d4177f00458ef420da1491f91f2e4f0a17dc11c253232a9bcc06572d21f2",
"source_sha256_old": "37532d0916c7b5f348123e993b8eb8c76f08c97d70c099cb1fc6f6b3cdacb696"
}
]
}
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
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"pattern": "^\\d{1,12}$",
"type": "string"
},
"entity": {
"enum": [
"formulary",
"plan"
],
"type": "string"
},
"key": {
"pattern": "^[A-Za-z0-9:-]{1,40}$",
"type": "string"
},
"limit": {
"maximum": 100,
"minimum": 1,
"type": "integer"
},
"plan_year": {
"maximum": 2100,
"minimum": 2000,
"type": "integer"
},
"since": {
"format": "date-time",
"pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d(?:\\.\\d+)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$",
"type": "string"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
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"method"
],
"type": "object"
},
"output": {
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]
},
"records": {
"items": {
"additionalProperties": false,
"properties": {
"detected_at": {
"type": "string"
},
"entity": {
"enum": [
"formulary",
"plan"
],
"type": "string"
},
"field": {
"type": "string"
},
"id": {
"type": "string"
},
"key": {
"description": "formulary: <formulary id>:<RxCUI>; plan: contract-plan-segment.",
"type": "string"
},
"method_version": {
"type": "string"
},
"new": {
"type": [
"string",
"null"
]
},
"old": {
"type": [
"string",
"null"
]
},
"plan_year": {
"maximum": 9007199254740991,
"minimum": -9007199254740991,
"type": "integer"
},
"released": {
"type": "string"
},
"source_sha256_new": {
"type": [
"string",
"null"
]
},
"source_sha256_old": {
"type": [
"string",
"null"
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}
},
"required": [
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"released",
"entity",
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"old",
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"method_version"
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"required": [
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},
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},
"lastUpdated": "2026-10-22T16:53:49.546Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-22T16:53:49.377Z"
},
"resource": "https://data.spencermcw.com/v1/medicare/partd/changes",
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Which Medicare Part D formularies changed this month? Drugs added or dropped, tier, prior-authorization, step-therapy and quantity-limit changes and plan premium changes, computed by Distill from CMS’s monthly formulary files. Updated monthly. $0.05 per call (x402, USDC on Base); 3 free calls a day."
}What the leaf hashes
{"body":"306a416a3077297f19f8f32e293788534cdc4758f1d96db70096aac00a257de1","id":73185,"kind":"listing","method":"baseline/1","observed_us":1793025487139824,"prev":null,"subject":"x402_bazaar:https://data.spencermcw.com/v1/medicare/partd/changes","subject_kind":"source_record"}Proof
Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.