2021-2025 Cycle (ATH)

Bitcoin price from Nov 2021 ATH ($68,790) through 2025 ATH

Property	Value
Category	Market Data
Unit	index
Resolution	1d
Assets	BTC
Tier	Basic
API Endpoint	GET /v1/cycle-performance?type=ath
Field	cycle_4

Overview

2021-2025 Cycle (ATH) starts from the ATH on November 10, 2021 ($68,790). Includes FTX collapse, ETF approvals, and recovery.

Formula

$$\text{Index}(t) = \frac{\text{Price}(t)}{\text{Price}(\text{2021-11-10})}$$

Interpretation

• Dropped to ~0.22 (78% drawdown, FTX collapse)
• Reclaimed ATH in early 2024 (ETF approvals)
• Peaked at ~1.8x in October 2025

Use Cases

• ETF impact: Measures spot Bitcoin ETF effect on price
• FTX aftermath: Market recovery from largest modern exchange failure

API Usage

curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://api.blocklens.co/v1/cycle-performance?type=ath?start_date=2024-01-01&end_date=2024-12-31&limit=365"

Related Metrics

• 2011-2013 Cycle (ATH) — Bitcoin price from Jun 2011 ATH ($35.88) through 2013 ATH
• 2013-2017 Cycle (ATH) — Bitcoin price from Nov 2013 ATH ($1,156) through 2017 ATH
• 2017-2021 Cycle (ATH) — Bitcoin price from Dec 2017 ATH ($20,089) through 2021 ATH
• 2025+ Cycle (ATH) — Bitcoin price from Oct 2025 ATH ($126,198) — current cycle
• Cycle Performance (ATH) — Price performance comparison from cycle ATHs