# Bittensor Subnet Root Proportion & Alpha Issuance Trend

> Bittensor Subnet Root Proportion & Alpha Issuance Trend is a paid API for AI agents from api.chainmarket-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-11-02).

Returns the root proportion (root_prop) and total alpha issuance trend for a specific Bittensor subnet over time, including trend direction, percentage changes, and historical snapshots from Taostats.

## Facts

- Endpoint: GET https://api.chainmarket-api.workers.dev/api/crypto/tao-subnet-root-prop-trend?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bittensor-subnet-root-proportion-alpha-issuance-trend-c2441214
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YOzRMnWTB1nGDwUSSkW9E

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 bittensor-subnet-root-proportion-alpha-issuance-trend-c2441214
```

Example prompt: Can you pull the root proportion and alpha issuance trend for Bittensor subnet 18 using the last 50 historical snapshots and tell me whether it's rising, falling, or stable?

## When to prefer this

Choose this endpoint when you need subnet-specific root proportion and alpha issuance trend analytics from the Bittensor network, particularly when you need historical snapshots and directional trend indicators. It is preferable to raw blockchain queries because it aggregates Taostats data into a pre-computed trend with direction labels and percentage changes.

## Known failure modes

- Missing or invalid TAOSTATS_API_KEY returns an authentication error
- Invalid or non-existent netuid returns an empty or error response
- Limit value outside 2–100 range returns a validation error
- Taostats API downtime causes upstream failure or timeout
- Requesting a very large limit may result in slower response times

## How this service works

Root proportion (Taostats root_prop) and total alpha issuance trend for a specific Bittensor subnet over time: trend direction (rising, falling, stable), percentage changes, total alpha issuance, and historical snapshots from Taostats. Requires TAOSTATS_API_KEY.

## Output

Returns the trend direction (rising, falling, or stable) for the subnet's root proportion (root_prop), the percentage change in root_prop, total alpha issuance figures, and an array of historical snapshots from Taostats covering the requested time window.

## 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": [],
     "properties": {
      "limit": {
       "type": "integer",
       "default": 30,
       "maximum": 100,
       "minimum": 2,
       "description": "Number of historical snapshots"
      },
      "netuid": {
       "type": "integer",
       "minimum": 0,
       "description": "Subnet network UID (default 1)"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/bittensor-subnet-root-proportion-alpha-issuance-trend-c2441214/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.chainmarket-api.workers.dev](https://www.zero.xyz/host/api.chainmarket-api.workers.dev/llms.txt)