https://github.com/Blockstream/contracthashtool

A simple implementation of Pay-to-Contract-Hash
https://github.com/Blockstream/contracthashtool

Last synced: 3 months ago
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A simple implementation of Pay-to-Contract-Hash

• Host: GitHub
• URL: https://github.com/Blockstream/contracthashtool
• Owner: Blockstream
• License: mit
• Created: 2014-10-22T06:18:06.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2021-12-23T15:36:04.000Z (over 2 years ago)
• Last Synced: 2024-01-22T01:34:51.093Z (5 months ago)
• Language: C++
• Size: 39.1 KB
• Stars: 90
• Watchers: 49
• Forks: 28
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: COPYING

Lists

• awesome-android-cpp - Blockstream/contracthashtool - A simple implementation of Pay-to-Contract-Hash (TODO scan for Android support in followings)

README

        
Info

====

This tool allows you to take a redeemScript as a template and, using basic

EC math, replace public keys with ones which are only spendable by the original

key's private key holder and which cryptographically commit to the contract

hash specified. In this way, it provides a transparent and undetectable way of

sending payments which commit to some data without adding extra data to the

chain. It does, however, require some small amount of out-of-band communication.

This implements the neccessary parts of appendix A of the sidechains whitepaper,

though it is generally useful in many other cases.

To build

========

Install https://github.com/bitcoin/secp256k1

Use ldconfig so that the ld cache knows about the existence of secp256k1.