# Bitcoin Transaction Cost Calculator in USD & EUR (Taproot / SegWit / Legacy) (`bitcoin-fee-usd-estimator`)
- **Status**: 200 OK | **Latency**: 260ms | **Cached**: false
- **Primary Authority**: Mempool.space Fees + Binance BTC Spot + Platform Compute
- **License & Trust**: MIT Open Source + Platform Compute (public_third_party_api)
- **Verified At (UTC)**: 2026-10-28T00:56:07.600Z
- **Data Freshness**: live
## Structured Data
```json
{
  "fastest_fee_sat_vb": 1,
  "btc_price_usd": 80735.99,
  "estimated_cost_usd": {
    "taproot_110vb_usd": 0.09,
    "native_segwit_140vb_usd": 0.11,
    "legacy_226vb_usd": 0.18
  }
}
```
> **AI Agent Hint**: Agent Data Hub: ask anything via GET /api/v1/ask?q=..., whole tasks via /api/v1/bundles, up to 10 calls via POST /api/v1/batch. Add compact=1 or fields=a,b to save tokens. Docs: /llms.txt