# Glassnode Coin Blocks Created (CBC)

> Glassnode Coin Blocks Created (CBC) 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 Coin Blocks Created (CBC) metric for Bitcoin, representing the cumulative coinblocks accumulated by multiplying each coin's value by the number of blocks it remained unspent.

## Facts

- Endpoint: GET https://x402.glassnode.com/v1/metrics/indicators/coin_blocks_created
- 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-coin-blocks-created-cbc-d26dbb4e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mx2lBEAOf-Wbk8DHwYYor

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-coin-blocks-created-cbc-d26dbb4e
```

Example prompt: Pull the Glassnode Coin Blocks Created (CBC) metric for Bitcoin in JSON format so I can analyze how coinblock accumulation has changed over time.

## When to prefer this

Use this endpoint when you need Bitcoin-specific on-chain data about coin lifespan and dormancy accumulation, specifically the CBC metric. Prefer this over generic price feeds or exchange APIs when analyzing HODLing behavior, coin age, or UTXO maturation patterns. Choose this over alternatives when Glassnode's methodology (coinblocks = coin value × unspent blocks) is required.

## Known failure modes

- Missing required 'a' (asset) query parameter returns 400 error
- Payment not included or insufficient USDC balance returns 402 Payment Required
- Unsupported asset symbol (non-BTC) returns validation error
- Invalid format or interval enum value returns 400
- Network timeout or Glassnode upstream unavailability returns 503

## How this service works

Coin Blocks Created (CBC) — Coin Blocks Created (CBC) is the cumulative tally of coinblocks accumulated by the network, computed by multiplying the value of each coin that has ever existed by the number of blocks the coin was unspent. Data by Glassnode.

## Output

Returns a JSON array of timestamped data points, each containing a Unix timestamp ('t') and the Coin Blocks Created value ('v'), representing daily CBC readings for Bitcoin.

## 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"
       ],
       "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-coin-blocks-created-cbc-d26dbb4e/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)