kotagit75/btfy

A Blockchain Secured by Weather Observations. 🦋. Contribute to kotagit75/btfy development by creating an account on GitHub.

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README

Btfy is an experimental blockchain that explores whether weather observations can be used as a consensus beacon. By combining weather-derived beacons with Verifiable Delay Functions (VDFs), btfy investigates an alternative approach to blockchain consensus. Bitcoin creates unpredictability through computation. Btfy explores whether naturally occurring unpredictability already exists in the real world. Weather is one candidate. A Japanese article explaining Btfy can be found here. ImportantThis project is intended for technological exploration and research. It is not intended to promote, advertise, or solicit any product, service, or investment.

NoteBtfy is currently a project in the technical validation phase and in active development. The API and features may change without notice. Star ⭐ this repo if you find this project promising!

🌟 Features

⛅ Proof of Weather consensus ⚡ Energy-efficient block production using VDFs 🌍 Real-world entropy source from weather observations 🔗 Hash-chain protection against replaying historical weather data

🌱 Contribution to Environment and Society

Environment: By eliminating the energy-intensive computational race, we achieve low-power consensus building using weather data and VDF. Society: Miners pay for weather APIs, creating a cycle that indirectly contributes to improving the accuracy of weather observation infrastructure and aiding in disaster prevention and mitigation.

⛅ Why Weather? Traditional Proof-of-Work systems consume large amounts of electricity to create a source of unpredictability that secures consensus. Btfy takes a different approach. Instead of spending energy on computational puzzles, Btfy derives unpredictability from real-world weather observations. Future weather conditions cannot be predicted perfectly, making weather data a naturally occurring source of entropy. This allows Btfy to build consensus without requiring energy-intensive mining. 🎯 How does it work? A weather observation is used as a beacon. A beacon is an externally observed value that is difficult to predict before it becomes publicly available. In Btfy, weather measurements collected from multiple locations serve as the beacon. The consensus process can be summarized as follows:

flowchart TD A[Weather Data] --> B[Beacon] B --> C[VDF] C --> D[Block Generation] D --> E[Blockchain]

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Weather observations are collected. The observations are transformed into a beacon value. A Verifiable Delay Function (VDF) is evaluated using the beacon. The VDF output is included in a new block. The block is appended to the hash chain. Future blocks depend on previous blocks, preventing reuse of historical weather data.

Because future weather conditions are difficult to predict, generating future blocks ahead of time becomes difficult. The hash chain further prevents attackers from generating alternative histories using previously observed weather values. 🔒 Security Considerations Btfy is an experimental consensus mechanism and its security properties are still being evaluated. The current design assumes:

Weather observations are collected from multiple geographically distributed locations. No single observation point can fully determine the beacon. Future weather observations cannot be predicted with perfect accuracy. Historical weather observations cannot be reused because each block depends on the previous block hash.

The security of Proof of Weather relies primarily on the unpredictability of future observations and the cryptographic guarantees provided by VDFs and hash chaining. This project should currently be considered experimental and not production-ready. 🚀 Quick Start git clone https://github.com/kotagit75/btfy.git cd btfy cargo run -- --mining --beacon-cmd example/open-meteo.sh Detailed Installation Instructions Run in Docker git clone https://github.com/kotagit75/btfy.git cd btfy docker build ./ -t btfy docker run -p 8080:8080 -p 62697:62697 --network=host -t btfy:latest Usage

run

run and mine blocks with beacon provider

display help

check health

get address

get balance

get chain

send transaction

add peer

📚 Documents

docs/installation.md docs/temperature_script_example.md FAQs

📍 Locations which is collected temperature data Btfy gets temperature data from multiple locations. They are currently placed in Japan. The locations are as follows: View geojson

Name Latitude Longitude

Wakkanai Airport 45.3995654 141.7974528

Asahikawa Airport 43.67147493 142.446865

Kushiro Airport 43.04503509 144.1962358

Obihiro Airport 42.73121032 143.2177867

Sapporo Okadama Airport 43.11577495 141.3802179

New Chitose Airport 42.77899571 141.6860269

Hakodate Airport 41.7754762 140.8161369

Aomori Airport 40.73545867 140.6902087

Akita Airport 39.61432074 140.2176736

Hanamaki Airport 39.42148821 141.1384845

Sendai Airport 38.13993289 140.9170924

Yamagata Airport 38.41209636 140.3703334

Fukushima Airport 37.2284081 140.4282886

Niigata Airport 37.95505405 139.1114496

Matsumoto Airport 36.16462046 137.9264258

Narita International Airport 35.77073692 140.3848188

Tokyo International Airport 35.548171 139.7791314

Shizuoka Airport 34.79653615 138.1853326

Chubu Centrair International Airport 34.85720324 136.8101604

Osaka Itami Airport 34.78606811 135.4381271

Kansai International Airport 34.43197865 135.2367959

Kobe Airport 34.63507139 135.2267252

Takamatsu Airport 34.21484194 134.0146539

Kochi Airport 33.5476357 133.6739953

Hiroshima Airport 34.43731367 132.9207516

Matsuyama Airport 33.8277126 132.7003022

Yamaguchi Ube Airport 33.93127097 131.2786026

Fukuoka Airport 33.58561376 130.4500511

Nagasaki Airport 32.91489785 129.9170527

Oita Airport 33.47958263 131.7362115

Kumamoto Airport 32.83497974 130.8588813

Kagoshima Airport 31.80072839 130.7202485

Naha Airport 26.19990739 127.6467932

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