Crypto ETF Sentinel — Historical quarterly time series for one XBRL concept (AUM, NAV, sha
Crypto ETF Sentinel — Historical quarterly time series for one XBRL concept (AUM, NAV, shares outstanding, etc.) on one US spot crypto ETF issuer. Use when charting a single fund's growth or checking a reported figure against its SEC filings. Pass the issuer's SEC CIK as cik; optional concept, unit, taxonomy.
100000 (raw units)
price
2
calls / 30d
1
unique payers
2026-09-06
updated
Provider
api.cryptoetfsentinel.com · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x169Bf49c6ee5A179190121Ab8D180B50e31683d1",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "100000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "Ezzbt3d3K76pmQpwbeXkggCs5n7Q3JWG3iCmtdKdpMxk",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"amount": "100000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"cik": "0001980994",
"concept": "InvestmentOwnedAtFairValue"
},
"type": "http"
},
"output": {
"example": {
"data": [
{
"filed_date": "2026-02-27",
"fiscal_period": "FY",
"fiscal_year": 2025,
"form_type": "10-K",
"period_end": "2025-12-31",
"value": 67415764355
}
],
"meta": {
"concept": "InvestmentOwnedAtFairValue",
"total": 8,
"unit": "USD"
}
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"properties": {
"cik": {
"description": "Zero-padded SEC CIK identifier (e.g. ``0001980994``). Optional — pass one to target a specific issuer (discover CIKs via /v1/issuers); omit to get the largest issuer by AUM.",
"pattern": "^[0-9]{1,10}$",
"type": "string"
},
"concept": {
"default": "InvestmentOwnedAtFairValue",
"description": "XBRL TIER1 concept (e.g. InvestmentOwnedAtFairValue = AUM, NetAssetValuePerShare).",
"type": "string"
},
"taxonomy": {
"description": "Taxonomy filter; auto-resolved from concept if omitted.",
"type": "string"
},
"unit": {
"description": "Unit filter; auto-resolved from concept if omitted.",
"type": "string"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"description": "The endpoint payload — type varies per route"
},
"error": {
"type": [
"string",
"null"
]
},
"meta": {
"properties": {
"limit": {
"type": [
"integer",
"null"
]
},
"offset": {
"type": [
"integer",
"null"
]
},
"total": {
"type": [
"integer",
"null"
]
}
},
"type": "object"
}
},
"required": [
"data"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
}Use it
curl
curl "https://api.cryptoetfsentinel.com/v1/xbrl/series" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://api.cryptoetfsentinel.com/v1/xbrl/series");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://api.cryptoetfsentinel.com/v1/xbrl/series")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/5917.json, and this resource appears in /discovery/resources and /discovery/search.