# Bitcoin Block Reward Economics (144-Block Window)

> Bitcoin Block Reward Economics (144-Block Window) is a paid API for AI agents from clonecho.builda.company, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Returns miner-reward economics over approximately 144 Bitcoin blocks, including block reward vs fees, fee share percentage, and per-block averages sourced from mempool.space.

## Facts

- Endpoint: POST https://clonecho.builda.company/x402/btc-block-rewards
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/bitcoin-block-reward-economics-144-block-window-9c9772b9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ugCMQtxlXr3qRKOQsIdxl

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 bitcoin-block-reward-economics-144-block-window-9c9772b9 -d '<json body>'
```

Example prompt: Can you pull up the current Bitcoin miner reward economics for the last 144 blocks — I want to see how the block subsidy compares to transaction fees and what percentage of miner income is coming from fees right now?

## When to prefer this

Use this endpoint when you need a quick, pre-aggregated snapshot of Bitcoin miner reward economics over the most recent ~144 blocks (approximately 1 day) without having to query and aggregate raw block data yourself. Prefer this over raw blockchain APIs when you specifically want the subsidy-vs-fees breakdown and fee share percentage in a single call.

## Known failure modes

- mempool.space upstream unavailable — service may return 503 or empty data
- Stale data if mempool.space indexer is lagging behind chain tip
- No parameters supported — cannot query historical windows beyond the fixed ~144-block range
- Payment failure (x402) if USDC balance is insufficient

## How this service works

CRYPTO: Bitcoin miner-reward economics over ~144 blocks — reward vs fees, fee share, per-block averages (mempool.space). Returns JSON.

## Output

A JSON object containing aggregated Bitcoin miner reward data over approximately 144 blocks (~1 day), including: total block subsidy, total transaction fees collected, fee share as a percentage of total miner revenue, and per-block averages for rewards and fees.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/bitcoin-block-reward-economics-144-block-window-9c9772b9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from clonecho.builda.company](https://www.zero.xyz/host/clonecho.builda.company/llms.txt)