Activation of trading any pair on the distributed exchange

Dear Omni Layer users,

Beginning with Bitcoin block 627250, which is expected to be on or about 23rd April, 2020, a new version of the distributed exchange on the Omni Layer protocol goes live.

After the activation, it will be possible to trade any token for bitcoins, e. g. Omni, MaidSafeCoin, USD₮ or Agoras without any third party involved.

Omni Core 0.8.0+ users can use the new feature as soon as it is available and Omni Wallet users not in restricted jurisdictions will have access shortly thereafter through

In order to take advantage of the new transaction processing improvements, please upgrade to Omni Core 0.8.1 … Please see:

To avoid any consensus divergences, for example when a user with an old version considers a transaction as valid, while it is actually invalid under new rules, Omni Core versions lower than 0.8.0 will go into a fail-safe state after the activation and will no longer be started without falling out of consensus with the network.

Activation of trading any pair on the distributed exchange

Omni Core v0.8.1 released

Dear Omni Layer integrators,

Today we announce the release of Omni Core 0.8.1. This version is a minor release and includes significant performance improvements for the initial synchronization and upgrading from older versions of Omni Core.

A consensus affecting issue in an earlier version of Omni Core has been identified, which may cause some transactions to be executed twice. This has been addressed and fixed in the previous major version 0.8.0.

If you haven’t upgraded to 0.8.0 yet, this update is mandatory.

The first time you start this version from a version older than 0.8.0, the internal database for Omni Layer transactions is reconstructed, which may consume several hours or even more than a day. Please plan your downtime accordingly.

Upgrading from 0.8.0 does not require a rescan and can be done very fast without interruption.

To download and view more details about this release, please visit:

Previous Post: Omni Core v0.8.0 released [update required!]

Omni Core v0.8.1 released

Omni Core v0.8.0 released [update required!]

Dear Omni Layer integrators,

This week we have released Omni Core v0.8.0. This version is a major release and an upgrade is required.

A consensus affecting issue in an earlier version of Omni Core has been identified, which may cause some transactions to be executed twice. This has been addressed and fixed in this release.

The first time you start this version, the internal database for Omni Layer transactions is reconstructed, which may consume several hours or even more than a day. Please plan your downtime accordingly.

To download and view more details about this release, please visit:

A more in-depth post will follow later next week.

Omni Core v0.8.0 released [update required!]

Omni Core v0.7.1 released

This week we announce the release of Omni Core v0.7.1.

Omni Core 0.7.1 paves the way for trading any asset on the Omni Layer for Bitcoin in a decentralized fashion and it adds new commands to accept and execute orders on the distributed exchange.

Please note, if you have not yet upgraded from 0.6 or earlier versions: Omni Core 0.7 changed the code base of Omni Core from Bitcoin Core 0.13.2 to Bitcoin Core 0.18.1. Once consensus affecting features are enabled, this version is no longer compatible with previous versions and an upgrade is required. Due to the upgrade from Bitcoin Core 0.13.2 to 0.18.1, this version incorporates many changes, so please take your time to read through all previous release notes carefully. The first time you upgrade from Omni Core 0.6 or older versions, the database is reconstructed, which can easily consume several hours. An upgrade from 0.7 to 0.7.1 is seamless.

To view the complete release notes in your browser and download the binaries, please visit:

State of the Layer: End of Year 2019

Omni Core v0.7.1 released

State of the Layer – End of Year 2019

Omni State of the Layer, End of Year 2019

Lots of news to share in this year-end update!  This update includes the following sections:

  • Omni Core 0.7.0 Release
  • Omniwallet User Experience Refresh
  • OmniBOLT development updates
  • OmniLAB Syllabus 
  • Omniwallet-Mobile from OmniLAB
  • Electrum Plug-in
  • Specification Cleanup
  • OmniJ and related work
  • Decentralized Exchange Upgrade
  • Regional and Functional Restrictions

Omni Core 0.7.0 Release

Thanks to the sponsorship from Tether, Omni Core maintainer dexX7 ( and Peter Bushnell (, the creator of Feathercoin, have completed and released Omni Core 0.7.0.  Among other features this release rebases all Bitcoin Core 0.18.1 improvements into Omni Core.

Major updates are much faster indexing of transactions and the update to the decentralized exchange as described later.

Release notes for this major upgrade can be found on GitHub:

Omniwallet User Experience Refresh

The talented team at Rana Dev ( has been engaged to create a new, updated version of  The Omni team asked them to focus on usability and streamlining the most used aspects of the wallet, and to make the wallet work on mobile web.  Initial prototypes are looking amazing and the team is pleased to share some examples of the new interface below:

OmniBOLT development updates

OmniBOLT is an in-progress specification, based on the fundamental theory of Lightning Network, describing how to enable Omni Layer assets to be transferred via Lightning Network channels, and how Omni Layer assets will benefit from instant payment on Lightning channels. We propose this Omni Layer-capable extended protocol to expand the horizons of basic Lightning Network, to support Omni Layer assets. 

The OmniBOLT Daemon (OBD) is a golang implementation of the specification. It runs as an independent process connecting to a full node of Omni Core (version 0.7.0), which provides the on-chain services for Omni transactions on the Bitcoin network. The current OBD implementation is tightly-bound to Omni Core. Also currently being released is an API that enables light clients to communicate with OBD network. It is an easy way for our community to develop Lightning applications. 

Development summary:

  1. Applied the HD (Hierarchical Deterministic) mechanism for generating/managing OBD users’ address/keys/mnemonic words.
  2. Finished HTL Contract for single node version of OBD. Tested on a user base of hundreds. 
  3. New OBD test procedures and documentation are updated.
  4. Update the OBD API online document (, completed the HTLC related API descriptions.
  5. Update the READ.ME file of the OBD repository( This document is a step by step instruction for a brand-new user of OBD.
  6. Released one OBD demonstration video.
  7. The OBD query interfaces have been developed and improved, and an interface for querying user-related information has been added.

The following tasks are in our working pipeline :

  1. Work in parallel with Omni Core team, who are developing new interfaces supporting SegWit in Omni transactions. We currently use some tricks to circumvent this part of work, in order to prove the concept. It works but is not secure enough. After the new features of Omni Core are ready, we will change our code base to the new Omni Core.
  2. Larger scale tests of HTLC.
  3. Try to connect OBD to the LND network. At least we hope we can connect to the existing onion network.
  4. Or develop own network module, to enable OBD nodes to talk to each other.
  5. Complete path discovery/finding algorithms and transfers among multiple OBD nodes and any number of clients.

Online API documents for our community:

For details of Update:

Please visit for more information.

OmniLAB Syllabus 

There is one aim for this syllabus: to instruct relatively unsophisticated programmers / audiences to understand the background, basic theory, and application of blockchain technology, grasp fundamental concepts, technical processes, specifications and their applicable scenarios. After passing this examination, audiences shall become a specialist with ability to develop blockchain products and applications. We are looking for the cooperative institutions globally to spread our certification standards and the technical culture of Omni. 

Strategic Partners till this moment: Odaily  Blockbeats  Ccvalue  BTCU 

Please find more details here: 

Email: for cooperation. 

Omniwallet-Mobile from OmniLAB

We have also begun working on mobile versions of OmniWallet, testing binaries are available in our repo. OmniWallet-mobile is a native wallet for Omni Layer assets, released on both Android and iOS. It currently supports Bitcoin and all Omni Layer tokens, providing Bitcoin & Omni Layer users with an ease-of-use and unrivaled blend of security. The wallet is completely open source, which includes a set of standard backend services, written in java/golang, and a mobile side app written in Dart (Flutter framework by Google).

OmniWallet Mobile:

Electrum Plug-in

A team of developers has created an electrum wallet plugin which supports Omni Layer assets.  This will allow any electrum-based wallets to begin using Omni Layer assets such as USD₮ directly.  These haven’t yet been put into the official electrum client but are available for testing here: 

Specification Cleanup and Documentation Efforts

We have recently started a project to update the Omni Protocol Specification and related technical documentation. This work has already begun and will ultimately include:

  • Converting the document from basic Github markdown to the more full-featured AsciiDoc markdown format.
  • Removing obsolete and historic sections of the Specification to focus on the details of the Protocol itself.
  • Updating the specification to include details on Class C transactions and other new features.

We also have created the Omni Layer Documentation Project repository. The README for this repository includes links to important existing documents. (If something is missing please let us know by submitting a Pull Request.) This repository also has a directory containing our first steps towards implementing Omni Layer Enhancement Proposals (OLEs) that will be the Omni equivalent of Bitcoin Improvement Proposals (BIPs).

OmniJ and related work

The OmniJ lead developer, Sean Gilligan (, has been hard at work on improvements in bitcoinj and OpenJDK-based wallet framework technology that will allow us to build a bitcoinj-based Omni Layer wallet that can ultimately be deployed on mobile, desktop, or server.  Since bitcoinj provides lightweight serverless blockchain access (SPV mode) this architecture provides nice decentralization at the Bitcoin layer and only relies on Omni Core API servers for Omni token balances. The initial focus is on a desktop wallet, which should be appearing in alpha-test versions. OmniJ will also be updated to finally support Class C transactions.

Decentralized Exchange Upgrade

As some know – but few use – the Omni Layer provides a fully-decentralized exchange mechanism on the Bitcoin blockchain: one feature allows you to swap between BTC and OMNI tokens, and another allows for the exchange between any Omni Layer tokens (e.g. USD₮ <-> MaidSafe).  The team calls these the DEx and the MetaDEx. With the 0.7.0 update Omni Core and the forthcoming Omniwallet interface update, the team would finally like to open up the primary decentralized exchange to work between BTC and any Omni Layer token directly on the Bitcoin blockchain. The team is working on the functional interfaces within Omniwallet and the proper RPC calls within Omni Core, at which point the Feature Activation transaction necessary to make the feature live will be broadcast to the blockchain. Regional and Functional Restrictions

Finally, the team has decided that due to laws and regulations prohibiting the export of services and technologies to certain countries and jurisdictions, is now blocking all connections from the following countries:

  • Cuba
  • Iran
  • North Korea
  • Sudan
  • Syria

Also, in the forthcoming version of, users in the United States will no longer be able to use to interact with the on-chain Distributed Exchanges available on the Omni Layer protocol on the Bitcoin blockchain. Other wallet functions will be unaffected, and read-only information about offers, trades and prices from the DEx will remain available on Omniwallet and Omniexplorer. While this was a difficult decision, it protects the ability of the Omni developers to continue innovating cutting edge decentralized technologies for the benefit of all users. 

Looking forward to 2020!

State of the Layer – End of Year 2019

Omni State of the Layer, July 16 2019

I’d like to start this update with the reminder that the Omni Layer is an asset issuance and smart contract protocol that runs on top of the Bitcoin network.  Some people have asked if Omni is a fork of Bitcoin, or its own network – and I wanted to reiterate that the Omni Layer is a meta-layer on top of Bitcoin. Omni uses the available space in the Bitcoin OP_RETURN mechanism to create an Omni Protocol ledger for tokens and smart contracts as a meta-layer on the Bitcoin ledger. In this way, Omni leverages the on-chain hashing power and security of Bitcoin’s Proof of Work system.

Tether itself is a tenant on top of the Bitcoin network.  When Tether was architected, I had in mind not only a token that would hold parity with a dollar, but something that would demonstrate the extra-special capabilities of a decentralized ledger, and what applications on such a technology could achieve.

Using the Omni Layer, tethers are issued as a meta-token on top of the Bitcoin network, using the messages that Bitcoin transactions commit to this decentralized ledger.  Instead of just moving a bitcoin, you were also saying “I’m moving a dollar from here to there.” In doing so, users would have a bearer-asset, just like BTC, with the same security and assurances provided to bitcoins on the Bitcoin network.

While tens of billions of dollars of tethers are traded daily on multiple exchanges off-chain, there are hundreds of millions worth of transactions daily on the Omni Layer, on-chain, directly on Bitcoin, moving those funds between wallets and exchanges.  This demonstrates an amazing capability that I believe is being overlooked. The Bitcoin network is exceptional for securely passing value, no matter which token, BTC, USD₮, or otherwise.

The community has focused so much upon the bitcoins themselves and not on the fact that what we have is an immortal state machine that no one can turn off and no one can censor.  Bitcoin’s built-in messages and capabilities can be extended with technologies like Omni that rely upon the immutability of Bitcoin ledger records kept within.  

While Tether has begun issuing USD₮ on other blockchains such as the ERC-20 variant on Ethereum, I wanted to remind everyone that no network has the massive hash-power and security that the Bitcoin network provides, especially with the coming switch to PoS on the Ethereum network.  If you care about immutability and security, or are a Bitcoin maximalist, we’ve built the Omni Layer for you!


Tether Sponsorship

We are excited to announce that Tether has provided sponsorship for additional developers to bring Omni Core up to par with Bitcoin Core 0.18 and to create further innovations on the protocol.  The new release is currently being tested and should be available soon. The new release brings tremendous performance improvements, as well as cost savings due to much better fee estimation for transactions.

Peter Bushnell (, the creator of Feathercoin is working with Omni Core maintainer dexX7 ( and Adam ( to get this release finalized.  

Additional functionality will be added to the protocol soon, to support native Segregated Witness transactions and features like send-to-many, enhancements that can lower the cost of individual transactions and keep cost low and integration needs easier for exchanges and integrators.  We are also speaking with the Lightning and RGB community developer teams to determine how we can best integrate with them for off-chain asset movement.

Any individuals, exchanges or integrators who would like to submit recommendations and feature requests can do so by submitting a new issue on the Github Spec (, emailing or join the telegram chat (  We’d like to compile a list of all integrators so that we can timely publish news and keep in communication with updates and recommendations.


Omni Layer Protocol Specification Updates

We are in the process of updating the Omni Layer protocol specification. This should help integrators better understand the data format used in Omni-encoded transactions. In addition, we are looking at ways to improve or optimize the protocol to allow for additional functionality.

We are looking into new ways that developers can encode instructions in OP_RETURN messages, to further enhance the capabilities of the protocol.  Beyond decentralized exchange functionality, we are considering a number of options that would allow for different types of conditional sends of assets, in a more generic smart-contract language.  We solicit any ideas and recommendations on what functionality is possible.


Upcoming Updates

In the coming weeks, we have updates to share on a number of exciting developments:


Omniwallet-Mobile from LunarX ( redesign

Electrum Wallet Plug-in

OmniJ and related work

Omni Layer on Feathercoin

Decentralized Exchange Updates


Invitation to developers

Anyone who has looked into the Omni Layer and realized what it actually can provide on the Bitcoin network gets really excited about the future possibilities.  We invite curious developers and innovators to examine the capabilities of meta-layer transactions on top of the Bitcoin blockchain and to contribute ideas to accelerate the development of new features on this time-tested platform.


Omni State of the Layer, July 16 2019

Omni Core v0.5.0 released

Today we have released Omni Core v0.5.0 which addresses the previously identified startup delays/issues.


v0.5.0 is a major release and consensus critical in terms of the Omni Layer protocol rules. An upgrade is mandatory, and highly recommended. Prior releases may not be compatible with new behaviour in this release.


Note: the first time you run this version, all Omni Layer transactions are reprocessed due to an database update, which may take 30 minutes up to several hours.


To view the complete release notes in your browser and download the binaries, please visit:


State of the Layer: All Hands – May 2 2019
Omni Core v0.5.0 released