| pragma solidity ^0.4.14; | |
| /* | |
| Example of how to verify BLS signatures and BGLS aggregate signatures in Ethereum. | |
| Signatures are generated using https://github.com/Project-Arda/bgls | |
| Code is based on https://github.com/jstoxrocky/zksnarks_example | |
| */ | |
| contract BLSExample { |
| pragma solidity ^0.4.22; | |
| // ECE 398 SC - Smart Contracts and Blockchain Security | |
| // http://soc1024.ece.illinois.edu/teaching/ece398sc/spring2018/ | |
| // Simpest possible duplex-micropayment channel | |
| // - Funded with an up front amount at initialization | |
| // - The contract creator is called "alice". The other party, "bob", is passed | |
| // as an argument to the Constructor | |
| // - There is no fixed deadline, but instead any party can initiate a dispute, | |
| // which lasts for a fixed time |
This guide is specific to getting LND 0.5-beta and Bitcoind running on Ubuntu 16.04 LTS for mainnet. It is aging rapidly and includes steps not necessary on newer versions of LND. As of April 2021 it is very out of date for bitcoind. As of December 2021 it is outdated for LND too.
Original installation guide:
This guide is broken into the following sections:
bitcoind and set to start automatically
| contract random { | |
| /* Generates a random number from 0 to 100 based on the last block hash */ | |
| function randomGen(uint seed) constant returns (uint randomNumber) { | |
| return(uint(sha3(block.blockhash(block.number-1), seed ))%100); | |
| } | |
| /* generates a number from 0 to 2^n based on the last n blocks */ | |
| function multiBlockRandomGen(uint seed, uint size) constant returns (uint randomNumber) { | |
| uint n = 0; | |
| for (uint i = 0; i < size; i++){ |