Tag Archives: go

Decred

Decred: Rethink Digital Currency

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We are excited to announce a new digital currency, Decred. The main technical features of Decred and the motivation for including them are discussed in my previous blog entry.
Decred
Decred is an open, progressive, and self-funding cryptocurrency with a system of community-based governance integrated into its blockchain. At its core is a hybridized proof-of-work proof-of-stake (PoW/PoS) consensus system that aims to strike a balance between PoW miners and PoS voters to create a more robust notion of consensus. The project is a result of the theoretical proposals brought by proof-of-activity (PoA) and MC2 in 2013. Decred development started in April, 2014 with a single developer and expanded to include the btcsuite developers shortly thereafter.

Decred is built in the spirit of open participation and we have provided below a full disclosure of the technical features of the system, wallets and mining, initial funding and distribution, project governance and development, and a group contribution timeline. We hope to launch mainnet on January 18th, 2016, and will provide additional details in this thread. Everyone is welcome to participate, and you are certainly welcome to join the development and project groups if you have interest in contributing to our efforts!
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Bitcoin, btcd

Btcsuite: Announcing Btcd 0.12.0 Release

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btcd

btcd

We’ve just released btcd version 0.12.0 beta! It is a highly recommended updated since it contains code to ensure new upcoming network rules are properly enforced (CLTV), new protocol enhancements, various optimizations, and several other enhancements.

Overview

In addition to announcing the new release, the purpose of this blog is to discuss a few points of the release in more detail. For those of you who are simply looking for the release notes and updated Windows binaries, they are located here.

The most important changes this post will cover are:

  • CHECKLOCKTIMEVERIFY (CLTV) support (BIP0065)
  • Enforce LowS signatures for transaction relay
  • New flag for controlling the minimum relay fee
  • Bloom filter service bit support (BIP0111)
  • New signature validation cache
  • Developer-centric changes:
    • Refactored peer package
    • New options when querying address index
  • Under development

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Bitcoin, btcwallet

Btcwallet 0.6.0 Release

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Today we are releasing btcwallet 0.6.0, along with a minor release to btcd (0.11.1) which is required to build the new btcwallet. This wallet release primarily focuses on adding account support, integrating transaction history in the new database, and making wallet an importable package for reuse in other binaries. As always, general fixes and improvements all around are included. See the release notes for the full details.

Accounts

Multiple account support

Multiple account support

btcwallet takes a different approach to accounts compared to Bitcoin Core wallet, and it’s important to understand why this is done and how it affects usage. In Bitcoin Core, account balances and the addresses used to receive outputs are separate concepts, and balances can be moved across accounts without an on-chain transaction. While this model certainly has its uses, we feel that it comes with disadvantageous privacy implications as well, since outputs received by an address of one account can be spent when debiting a balance from an unrelated account.

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Bitcoin, btcd

Btcsuite: Announcing Btcd 0.11.0 Release

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btcd

btcd

We’ve just released btcd version 0.11.0 beta! This release contains quite a few enhancements and is a required update.

Overview

In addition to announcing the new release, the purpose of this blog is to discuss a few points of the release in more detail. For those of you who are simply looking for the release notes and updated Windows binaries, they are located here.

While it certainly doesn’t cover everything in the release, the main topics this blog will cover are:

  • Required update
  • Transaction malleability reduction (BIP0062)
  • Support for a limited RPC user
  • Enhanced peer control
  • Upcoming changes

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Bitcoin

Btcwallet 0.5.0 Release and Roadmap

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Last week saw the 0.5.0-alpha release (and a 0.5.1-alpha bugfix release) of btcwallet, our Bitcoin wallet daemon.  This release was largely focused on architectural changes for improved security, privacy, and performance.   Highlights of the release include a new wallet database and the introduction of a hierarchical deterministic address manager.

caption

Example BIP0032 hierarchy: All keys for all accounts are deterministically derived from a single seed.

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