# Glassnode US Government BTC Balance

> Glassnode US Government BTC Balance is a paid API for AI agents from x402.glassnode.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Returns the daily time series of BTC held in addresses controlled by US government authorities, including seized funds from the Bitfinex and Silk Road hacks.

## Facts

- Endpoint: GET https://x402.glassnode.com/v1/metrics/distribution/balance_us_government
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/glassnode-us-government-btc-balance-69301bd0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_j0AsrvwvJ1wW7VmpXalZl

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability glassnode-us-government-btc-balance-69301bd0
```

Example prompt: Pull the latest daily BTC balance held by the US government from Glassnode — I want to see how much seized Bitcoin they're currently holding, in native BTC units.

## When to prefer this

Use this endpoint when you specifically need on-chain BTC balance data attributed to US government-controlled addresses, including seized funds from major hacks. Prefer this over generic exchange balance or miner balance endpoints when the question is about government custody or law enforcement holdings of Bitcoin.

## Known failure modes

- Missing required 'a' query parameter (asset) returns a 400 error
- Invalid asset symbol returns an error — only 'BTC' is supported
- Invalid currency or format enum value returns a 400 error
- Insufficient payment or missing x402 payment header returns a 402 Payment Required
- Network timeout or Glassnode backend unavailability returns a 5xx error

## How this service works

US Government Balance — US Government Balance is the amount of BTC held in addresses controlled by US authorities, including seized funds such as those from the 2016 Bitfinex Hack and the 2012 Silk Road Hack. Data by Glassnode.

## Output

An array of time-series objects each containing a Unix timestamp (t) and a numeric value (v) representing the BTC balance held by US government addresses at that point in time, at daily resolution.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "a"
     ],
     "properties": {
      "a": {
       "enum": [
        "BTC"
       ],
       "type": "string",
       "description": "Asset symbol, e.g. BTC, ETH"
      },
      "c": {
       "enum": [
        "native",
        "usd"
       ],
       "type": "string",
       "description": "Currency for denominated values, e.g. usd, native"
      },
      "f": {
       "enum": [
        "csv",
        "json"
       ],
       "type": "string",
       "description": "Response format: json or csv"
      },
      "i": {
       "enum": [
        "24h"
       ],
       "type": "string",
       "description": "Time interval / resolution, e.g. 24h, 1w, 1month"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "array",
     "items": {
      "type": "object",
      "properties": {
       "t": {
        "type": "number"
       },
       "v": {
        "type": "number"
       }
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/glassnode-us-government-btc-balance-69301bd0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.glassnode.com](https://www.zero.xyz/host/x402.glassnode.com/llms.txt)