Financial freedom, built on masternodes

Dash was launched by Evan Duffield with the unique X11 hashing algorithm as its defining feature, and initial development focused on dynamic adjustment of mining difficulty, known as Dark Gravity Wave. This was soon followed by masternodes, providing a powerful and incentivized set of full nodes which form a backbone for the network and offer services to users. Sporks were released to help deliver a smooth release process of new features without hard-forking the network, and finally PrivateSend was released to make Dash a truly fungible currency.

Building a foundation for the future

While initially based on the Litecoin project, Dash rebased to Bitcoin in early 2015. InstantSend, a method of locking transactions secured using the second-layer masternode architecture, was released soon afterwards. Work continued throughout the year to build a decentralized governance system and release up to 10% of the block reward to proposals presented to the network. The first superblock was mined on 7 September 2015, making Dash the world’s first Decentralized Autonomous Organization (DAO).

Blocksize and hashrate increases

Within 24 hours, the network completed a historic vote, reaching consensus to authorize developers to begin work on 2MB blocks, guaranteeing future capacity. Meanwhile, the hash rate multiplied rapidly as powerful mining hardware was released, increasing 16-fold over the course of the year. The management of the core team saw further professionalization and the introduction of quality assurance measures. Bitcore and Insight were released with Dash extensions, based on a network-funded effort to port the X11 hashing algorithm to JavaScript.

Stability, decentralization and accessibility

2017 saw Dash supported on major hardware wallets and two releases to optimize preparation of PrivateSend funds, and better manage the growing list of governance objects using a tool called Sentinel. Meanwhile, fees on all transactions were reduced by a factor 10 across the board, and ownership of Dash Core Group was transferred to an irrevocable trust, with the decentralized network itself named as beneficiary.

Named devnets

Named devnets allow for the creation of multiple independent devnets. Each one is identified by a name which is hardened into a “devnet genesis” block, automatically positioned at height 1.

Governance system improvements

Watchdogs have not been used since 0.12.2.x; instead, all required information about Sentinel is included in masternode pings. For this update, additional information was added to ensure that masternode pings weren’t changed by an intermediary node. All messages and logic related to watchdogs were removed. Improvements were made to the proposal message format and to proposal validation and processing, lowering network traffic and CPU usage. Handling of triggers was also improved.

PrivateSend improvements

Instead of requiring PrivateSend collateral to be N times the PrivateSend fee, any input which is greater than or equal to 1 PrivateSend fee (but less than or equal to 4) can now be used as collateral. Inputs greater than or equal to 1 PrivateSend fee but strictly less than 2 will be used as collateral with OP_RETURN outputs. This lowered the number of inputs a wallet needs to handle, and improved privacy by eliminating the case where a user accidentally merges small non-private inputs together. It also decreased global UTXO set size.

New Dash branding

Android and iOS versions of DashWallet were updated with the new branding guidelines, modernizing the look and feel of both apps.

Uphold integration (Android)

The ability to buy and sell Dash on Uphold through a web view within the Android app was also integrated, allowing for easier onboarding of users.

NFC support (iOS)

The ability to request a payment via NFC was added, allowing users to tap supporting payment terminals and wallets to receive payment information.

iPad support (iOS)

The ability to use DashWallet on iPad was added so users can pay and receive payments on their tablets.

New localizations

Many new languages and currencies were added so that users all across the world can use DashWallet in their native language and view exchange rates in their local currencies.

Automatic InstantSend

Dash Core v0.13 introduced Automatic InstantSend, where transactions with four or less inputs will default to InstantSend, at no additional charge to users.

Deterministic Masternode List

The Deterministic Masternode List provides a single source of truth for all transactions requiring validation by masternodes, such as InstantSend transactions. The list is fully derived from on-chain data. This ensures all nodes will come to the same consensus regarding the current state of the valid masternode list.

Special Transactions

Special Transactions provide new structures to enable non-financial transactions on the blockchain. This feature will lay the groundwork for future uses of the network on layer 2, like Blockchain Users.

Three masternode keys

Previously, masternodes had two keys for their masternode: owner (to prove ownership) and operator (to operate the masternode and use it to vote). The second key was broken into two: operator and voting, such that the masternode may delegate voting if they choose.

Unlock wallet with fingerprint

Users may now unlock their wallet using their fingerprint to allow for seamless use of the app.

iOS Library integration

DashWallet is now integrated with an iOS library that connects it to the Dash blockchain, and may in future be used by other iOS clients to do the same.

InstantSend receiving (iOS)

DashWallet can now confirm whether a received transaction was sent via InstantSend.

Price sourcing alignment

The price sources are now aligned between both the iOS and Android versions of DashWallet.

Long Living Masternode Quorums

Long Living Masternode Quorums provide for increased scalability of the network by improving consensus and expanding the universe of potential use cases for the network. These quorums drastically reduce the amount of messages required to validate transactions, and avoid each individual node on the network having to store consensus data in-memory until a transaction is mined. These quorums can be very large depending on the level of security required for the use case.

ChainLocks against 51% attacks

ChainLocks drastically reduce the risk of a 51% mining attack on the network. This feature allows a Long Living Masternode Quorum to sign a block and propagate a message to the network indicating that nodes should reject blocks at the same height that do not match the block specified by the quorum. This not only makes reaching consensus quick and unambiguous, it also makes chain reorganizations below that block impossible.

Uphold integration (iOS)

Users may transfer Dash from their Uphold account to their wallet within the app, and buy and sell Dash through an embedded webview.

Price sourcing improvements

Improvements were made to ensure exchange rates align with other frequently used Dash applications.

DashCore v0.14 support

Support for LLMQs and ChainLocks was added to the wallet, ensuring users would be able to benefit from added security and instantly respendable payments.

Public testnet (“Evonet”)

Dash Platform will be released onto a public testnet that developers can connect to to experiment with the functionality.

DAPI, Identities, Documents

Users will be able to connect to Evonet using the Decentralized API (DAPI); create test identities and names; and create, update and delete documents.

Naming service and DashPay contracts

Users will get to explore the Dash Platform Naming Service (DPNS) and DashPay contract.

Libraries

Several libraries will be available to developers, including the Dash SDK, DAPI-client, DPNS-client, and DPP libraries.

Developer documentation

A developer hub will offer helpful documentation and guides to the new functionality.

Uniform UX across Android and iOS

DashWallet’s UI will be unified across Android and iOS for a more consistent look and feel.

Dark mode support for iOS

DashWallet iOS will introduce a dark mode consistent with Apple’s guidelines.

Advanced security options

Users will be offered more flexibility in how they manage their security settings.

Easy access to commonly used features

Users will be able to quickly access key features from the home screen.

Backports for Bitcoin v0.15.2

This release will bring Dash up to date with Bitcoin v0.15.2, benefiting from a number of fixes and optimizations made to Bitcoin up through that release.

Basic QT Wallet UI update

Users will benefit from an updated UI on the desktop wallet to match the updated Dash branding. This includes updated colors and styles to match the style guide, removal of unnecessary elements to clean up the UI, and new icons.

Post stress test enhancements

This release will include several optimizations made based on the findings from the recent stress tests.

BIP70 Improvements

Improvements to the BIP70 feature allow for a more efficient payment experience at the point of sale.  Users/Merchants that implement this protocol benefit from refund options, the ability to split payments to multiple addresses and will have a more secure experience.

Block reward reallocation

The allocation of block rewards — excluding proposal funding — between masternodes and miners is changing from a 50–50 split to a 60–40 split over a multi-year transition period.

UI upgrade

The Dash Core experience is now more consistent across all supported operating systems in regards to fonts, graphics and screen layouts.

Concentrated signature recovery

The new signature recovery system initially sends signature shares to a single deterministically selected node, instead of propagating signature shares to every node until one has enough to recover the signature. This optimization is expected to reduce the load by several orders of magnitude.

Minimum protocol check

Proof of Service (PoSe) for Masternodes is enhanced by ensuring a minimum protocol version is running during DKG.

Network thread optimization

Network threading has been optimized by eliminating unnecessary repetition of loops through all nodes by implementing event polling (epoll) on Linux.

Bitcoin v0.16 backports

This release also introduces over 650 updates from Bitcoin v0.16 as well as some updates from Bitcoin v0.17.

Protocol versioning

Allows for the smooth rollout of breaking changes without wiping development networks.

Platform test suite

Platform test suite is a repo containing consolidated tests across the platform, makes testing and updating tests much easier across all components.

Binary document fields

Allows developers to use native binary types (e.g., Buffer, ByteArray) to store their data.

Document timestamps

Ability to record the creation or update time of any document stored on Dash Platform.

Improved distribution package

Support for config templating and multiple nodes in mn-bootstrap.

Default Dash identity name

Allows a user to specify a primary username for their Dash identity.

DPNS & identity DIPS

DIP11 Identities and DIP12 Dash Platform Name Service have been released.

Home Screen Improvements

The send and receive tabs were removed to create more space and to remove redundancy with the shortcut bar.

Small Screen Improvements

Labels were shortened and/or reformatted to avoid overlap with other UI components on small screens.

Recovery Phrase Improvements

A back button was added, support for non-English phrases was implemented, warning messages were updated

Chain Sync Improvements (iOS)

Numerous fixes and changes to the core data design and the Masternode and quorum list downloads.

The DashPay Alpha Program engages the community with DashPay wallet testing on Evonet.

Usernames

Users will be able to register themselves on the network and start sharing their personalized usernames with other Dash users.

User profiles

Users will be able to make their username more identifiable with a display name, picture and bio.

Connect with contacts

Users will be able to request contacts by username and create a list of users they want to transact with.

Pay and get paid by username

Users can exchange Dash with friends, family and merchants by username or cryptographic address.

Binary data storage improvements

Improvements to represent binary data as byte arrays as opposed to strings so data is stored more efficiently.  JSON Schema has also been extended with the ‘byteArray’ keyword, thereby allowing developers to more easily define binary properties in their data contracts.

Consensus rules for identities

Several changes were made to the underlying structure comprising an identity within Dash Platform

Non-Determinism in Block Processing

This was a known bug that prevented many developers from successfully starting nodes on Evonet.

Core height consensus

Establishing consensus between L1 and L2 chains based on the height of L1.

Instant Send identity funding

This allows identities to be funded by leveraging the speed of InstantSend.

State trees

Storage of data state in Merkle trees for use with light clients.

Platform Distribution Package

The distribution package (dashman f.k.a. mn-bootstrap) has been significantly updated in order to improve user experience and accommodate the new platform components.

Identity funding

Ability to fund identities without ability to double spend.

Chain Sync Improvements (iOS)

Further improvements were made to the chain sync process to prevent delays in sending payments.

Forgotten Recovery Phrase (iOS)

Improvements were made to help users who have forgotten one or two words of their recovery phrase to still attempt to recover their wallet.

Bug Fixes & UI Improvements (Android)

The UX associated to forgetting your PIN were implemented, updates were made to support a newer Android SDK (29), crashes associated to backing up to a file and importing a private key was made.

Tendermint seed nodes

A special type of node that provides peer information to other nodes to improve scalability.

Secure ST Acknowledgement

Improvements to address several possible attack vectors and for scalability on Mainnet.

Drive verbose logging

Add more logs for better clarity and troubleshooting of Drive behavior.

Improved error messages

Readable and informative messaging for proper error handling.

UI Improvements & Polishing

• Improvement: Upgrade to Testnet (Platform v0.17)
• Improvement: Search Network Users
• Improvement: Android / iOS UI Alignment
• Improvement: Username Validation
• Improvement: Save Profile Reminder
• Improvement: Bad Masternodes
• Improvement: Username Format (allow uppercase and hyphens)
• Fix: Wallet Lock Timer
• Fix: Incorrect Sync Status
• Fix: Sync & Crash Issues
• Fix: Import Private Key