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+---
+layout: post
+title: eCash Avalanche Mainnet Launch
+subtitle: Post-Consensus to go live on Mainnet on September 14th 2022
+multiLangId: 2022-08-28-avalanche-post-consensus-launch
+lang: en
+---
+
+![Avalanche Post-Consensus Mainnet Launch](/img/avalanche-post-consensus-mainnet-launch.jpg "Avalanche Post-Consensus Mainnet Launch")
+
+Avalanche Post-Consensus will go live on the [eCash](https://e.cash) Mainnet on Sept 14th. This was [announced](https://twitter.com/eCashOfficial/status/1563813874775851009) by Amaury Séchet, founder of the eCash project, at the [Electronic Cash Conference](https://2022.be.cash) in Prague.
+
+The launch of Avalanche Post-Consensus on the eCash Mainnet is a significant achievement. Post-Consensus brings 51% attack prevention which increases security of the network significantly, bringing it on par with leading Proof-of-Work chains. It also brings 1-block finality to eCash, which opens the door for exchanges to enable 1 confirmation deposits.
+
+Avalanche Post-Consensus also sets a solid foundation for further enhancements to eCash, such as Pre-Consensus which is currently being developed. Future work will continue to improve the properties of eCash as global electronic cash.
+
+When the [launch countdown timer](https://avalanche.cash/) reaches 0, the status of the eCash Avalanche implementation will
+change from "Incubating" to "Live". This milestone was achieved via long and technically challenging work.
+
+## What does "Incubating" mean?
+
+Incubating is a period where the Avalanche Post-Consensus features are feature-complete,
+but still require testing and shakeout by the team. Several rounds of live testing by the
+Bitcoin ABC team resulted in several fixes and improvements to the Avalanche Post-Consensus implementation.
+For more details on the improvements made during the Incubation period, see our Avalanche Development Updates
+[here](/2022-05-02-avalanche-development-update) and [here](/2022-08-03-avalanche-development-update).
+
+The Incubating period is also a time to prepare Avalanche nodes to ensure sufficient
+quorum for the launch on Mainnet. It is important to have enough nodes and staked coins.
+This will set up the network for success.
+
+## What will happen when the countdown reaches 0?
+
+At the end of the countdown, Avalanche Post-Consensus will be considered live on the eCash network.
+This means that there will be sufficient nodes running the protocol, with sufficient XEC staked,
+for the protocol to run reliably and securely.
+
+Additionally, Bitcoin ABC 0.26.0 will be released. This release will include the `-avalanche` parameter
+as a standard node-configuration option. This means that Avalanche Post-Consensus will be ready for anyone
+on the eCash network to use. It will still be off-by-default, and considered an optional feature.
+
+## What is Post-Consensus?
+
+Post-Consensus is named that way because it is dealing with blocks *after* they are produced by miners.
+By contrast, pre-consensus is when the Avalanche protocol is used by nodes to come to consensus on
+transactions *before* blocks are produced.
+
+With Avalanche Post-Consensus, nodes can come to consensus on the current status of blocks that
+are visible on the eCash network. In other words, it allows nodes to know that the blocks they see are
+also accepted by the rest of the network. This information can then be used to defend the network against
+block withholding attacks, and blockchain reorganization attacks.
+
+After Pre-Consensus is implemented in Bitcoin ABC, Post-Consensus will also be used to reject blocks that
+include transactions that conflict with transactions that were finalized via Pre-Consensus. This will
+allow users of the eCash network to benefit from near-instant transaction finalization, with confidence that
+finalized transactions cannot be reversed.
+
+## What comes next?
+
+In the coming days, more information and tutorials about how to stake your coins and run Avalanche
+Post-Consensus will be released.
+
+Looking farther ahead, the next milestone for Post-Consensus will be to make the protocol run "on-by-default"
+in the node's configuration settings. This will be activated after sufficient monitoring of Avalanche
+Post-Consensus running as an optional setting, and it has proven to be reliable and stable.
+
+In the meantime, development of further eCash Avalanche capabilities continues. Upcoming capabilities include
+Pre-Consensus for near-instant transaction finality, and staking rewards to incentivize the provision of Avalanche
+node services on the network.
+
+## About Avalanche
+
+Using a fast consensus protocol to do Pre-Consensus has been a long-standing item on the
+[eCash Roadmap](https://e.cash/roadmap-explained) (and previously on the Bitcoin Cash roadmap).
+This is one of the improvements needed to power eCash to be a competitor and alternative to
+Central Bank Digital Currencies (CBDCs). When the [Avalanche whitepaper](https://ipfs.io/ipfs/QmUy4jh5mGNZvLkjies1RWM4YuvJh5o2FYopNPVYwrRVGV)
+appeared in 2018, eCash founder Amaury Séchet and the Bitcoin ABC team recognized that this new 
+protocol was what they had been searching for, as it fulfilled the needed requirements.
+
+It should be noted that eCash's Avalanche implementation is completely separate and distinct from the
+AVAX Avalanche project. They have no connection, other than both using the protocol described in the
+Avalanche whitepaper. Avalanche on eCash is an entirely new implementation which had to be developed
+from scratch by the Bitcoin ABC team.
+
+In the case of eCash, Avalanche consensus is used for fast and live consensus needs, such as fast
+transaction finality. Proof-of-work based Nakamoto consensus is retained where it is superior,
+providing objective consensus criterion to enable decentralized node bootstrapping.
+
+For more info and to monitor development progress, see [Avalanche.cash](https://www.avalanche.cash/)
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