================================================================================
ALTERNATIVE L1 HIGH-FREQUENCY DATA RESEARCH - SUMMARY
================================================================================
Research Date: 2025-11-03
Workspace: /tmp/altl1-research/
Status: COMPLETE ✅

================================================================================
KEY FINDING
================================================================================

FREE 1-MINUTE OHLCV DATA AVAILABLE FOR ALL MAJOR ALT-L1s FROM 2022

Primary Source: Binance Public API (https://api.binance.com/api/v3/klines)
- Authentication: NONE REQUIRED
- Frequency: M1 (1-minute), M5 (5-minute), M15 (15-minute)
- Historical: From 2022-01-01 (verified)
- Rate Limit: 120 requests/minute (sufficient)
- Coverage: 8 blockchains tested and verified

================================================================================
VERIFIED BLOCKCHAINS (all with 2022-01-01 data)
================================================================================

1. Solana (SOLUSDT)         - Top 10 by market cap  ✅
2. Avalanche (AVAXUSDT)     - Top 15 by market cap  ✅
3. Cardano (ADAUSDT)        - Top 10 by market cap  ✅
4. Polkadot (DOTUSDT)       - Top 15 by market cap  ✅
5. Cosmos (ATOMUSDT)        - Top 20 by market cap  ✅
6. Near (NEARUSDT)          - Top 25 by market cap  ✅
7. Algorand (ALGOUSDT)      - Top 30 by market cap  ✅
8. Tezos (XTZUSDT)          - Top 40 by market cap  ✅

================================================================================
QUICK START EXAMPLE
================================================================================

# Get 1000 1-minute candles for Solana from 2022-01-01
curl "https://api.binance.com/api/v3/klines?symbol=SOLUSDT&interval=1m&startTime=1640995200000&limit=1000"

# Response format: [timestamp, open, high, low, close, volume, ...]

================================================================================
FREQUENCY OPTIONS AVAILABLE
================================================================================

Interval    Binance Code    Tested    Status
1-minute    1m              YES       ✅ Available
5-minute    5m              YES       ✅ Available
15-minute   15m             YES       ✅ Available
30-minute   30m             -         ✅ Available
1-hour      1h              -         ✅ Available
4-hour      4h              -         ✅ Available
1-day       1d              -         ✅ Available

================================================================================
BACKUP SOURCE: COINBASE EXCHANGE API
================================================================================

URL: https://api.exchange.coinbase.com/products/{id}/candles
Authentication: NONE REQUIRED
Frequency: 60s (1m), 300s (5m), 900s (15m)
Rate Limit: 10 req/sec (600 req/min)
Coverage: 7 of 8 alt-L1s (NEAR not available)

================================================================================
ON-CHAIN NETWORK METRICS
================================================================================

Blockchain    API             Frequency           Auth Required
Polkadot      Subscan         Block (~6s)         NO
Tezos         TzKT            Block (~30s)        NO
Avalanche     Snowtrace       Daily aggregates    OPTIONAL
Near          NearBlocks      Daily aggregates    NO
Algorand      AlgoNode        Block (~4.5s)       NO

================================================================================
DELIVERABLES CREATED
================================================================================

Documentation:
  ✅ README.md                      - Index and quick start
  ✅ EXECUTIVE_SUMMARY.md           - High-level findings
  ✅ QUICK_REFERENCE.md             - Curl examples and API reference
  ✅ COMPREHENSIVE_FINDINGS.md      - Complete research report
  ✅ alt_l1_inventory.md            - Blockchain inventory

Code:
  ✅ fetch_binance_historical.py    - Python bulk download script
  ✅ test_binance_altl1s.sh         - Binance coverage test
  ✅ test_coinbase_altl1s.sh        - Coinbase coverage test

Test Results:
  ✅ 29 test result JSON files      - API validation data

================================================================================
REQUIREMENTS VERIFICATION
================================================================================

Requirement                          Status
M1 (1-minute) frequency              ✅ VERIFIED
M5 (5-minute) frequency              ✅ VERIFIED
M15 (15-minute) frequency            ✅ VERIFIED
Historical depth to 2022             ✅ VERIFIED (2022-01-01)
No authentication required           ✅ VERIFIED
Reasonable rate limits               ✅ VERIFIED (120 req/min)
Major alt-L1 coverage                ✅ VERIFIED (8 blockchains)
On-chain metrics available           ✅ VERIFIED (5 chains)

================================================================================
RECOMMENDATION
================================================================================

PRIMARY STRATEGY:
1. Use Binance API for OHLCV data (1m/5m/15m)
2. Start historical collection from 2022-01-01
3. Implement 1 req/sec rate limiting (conservative)
4. Cache locally in Parquet format

SUPPLEMENTARY STRATEGY:
1. Use blockchain-specific explorers for on-chain metrics
2. Combine OHLCV + on-chain for feature engineering
3. Use Coinbase as backup/redundancy

================================================================================
RESEARCH METHODOLOGY
================================================================================

Phase 1: Discovery
  ✅ Identified 10 major alt-L1 blockchains
  ✅ Researched official block explorers
  ✅ Tested API endpoint availability

Phase 2: OHLCV Testing
  ✅ Tested Binance API (8 blockchains)
  ✅ Verified M1/M5/M15 frequencies
  ✅ Confirmed 2022-01-01 historical depth
  ✅ Tested Coinbase as backup

Phase 3: On-Chain Testing
  ✅ Tested 5 blockchain explorers
  ✅ Verified block-level data access
  ✅ Documented frequency and depth

Phase 4: Documentation
  ✅ Created comprehensive report
  ✅ Developed quick reference guide
  ✅ Wrote example scripts
  ✅ Documented rate limits

================================================================================
FILES LOCATION
================================================================================

All research files stored in: /tmp/altl1-research/

Key Files:
  - README.md                    (Start here)
  - EXECUTIVE_SUMMARY.md         (High-level overview)
  - QUICK_REFERENCE.md           (Copy-paste examples)
  - COMPREHENSIVE_FINDINGS.md    (Full details)
  - fetch_binance_historical.py  (Implementation script)

================================================================================
NEXT STEPS
================================================================================

1. Review documentation (start with README.md)
2. Test API access using curl examples
3. Run fetch_binance_historical.py to download sample data
4. Implement production pipeline with error handling
5. Build feature engineering workflow

================================================================================
RESEARCH STATUS: COMPLETE ✅
================================================================================

All requirements met. Free high-frequency data (M1/M5/M15) available for
all major alternative L1 blockchains from 2022 via Binance public API with
no authentication required.

Recommended action: Use Binance API as primary data source.

================================================================================
