This is a required update for all network participants running a PAI Coin Full Node.

This release introduces a new PAI-specific hashing algorithm in order to improve the security and equity of the PAI Blockchain. With this change, only PAI Miner clients will be able to mine ensuring that PAI Coin Pool participants begin receiving rewards for mining again. This will allow anyone to participate and gain rewards from mining vs. the monopolization of hashpower that was previously possible.

This is a hard fork of the protocol so all nodes must be updated to this new version in order to sync past the transition point.

这是所有在运行 PAI Coin 完整节点的参与者的必需更新。

这版本引入了新的 PAI 特定哈希算法来提高PAI区块链的安全性和公平性。 通过这次的更改，只有拥有PAI Miner的软件的用户才能进行挖矿，以确保PAI Coin Pool参与者能再次的开始获得挖矿奖励。 这将允许任何人参与并从挖矿中获得奖励，而不是以前可能的算力垄断。

这是协议的硬分叉，因此所有节点都必须更新到此新版本才能同步经过转换点

This is a required update for all network participants running a PAI Coin Full Node.

This tag includes the following changes to stake vouchers and mempool support:

• Default transaction version to 3 to facilitate stake voucher expiration at stake difficulty transition blocks
• Mempool acceptance of stake vouchers checks stake difficulty and ignores vouchers that do not have the current stake difficulty fee; removes the banning score for this to avoid issues with node banning
• Purges stake vouchers in local nodes mempool that have incorrect stake voucher fee for the current difficulty
• New checkpoints up to block 180000

For all network participants running a PAI Coin Full Node this is a required update

This tag includes the following changes to peer-to-peer messaging:

• Updates to prioritize votes when communicating with nodes
• Updates to prioritize re-mined chain tips for the situation where not enough votes are available
• Addresses stake communication issues when nodes are out of sync with one another
• Resolves issue with assertion crashes due to race conditions in getblocktemplate
  It also resolves some boost library version issues.

For all network participants running a PAI Coin Full Node this is a required update

This tag includes the following changes:

• Resolves discrepancies in available balance for users that have had ticket purchase requests be expired due to changing ticket price
• Adds additional detail to the getwalletinfo RPC call to include specific data regarding staking and balance allocation in the user's wallet
• Updates block template generation to restrict number of transactions of each type that can be included in the block according to block header byte size limitations

For all network participants running a PAI Coin Full Node, please immediately update to v2.1.0. THIS IS A REQUIRED UPDATE.

This tag includes the following changes:

• Updates mining to properly handle the case where not enough votes exist to progress the chain by reverting the block template to the previous version to trigger an intentional fork;
• Ensures that the node automatically votes on any max height chain tips for which it is aware and holds the ticket;
• Adds support for nodes to properly distribute same-height chain tips;
• Updates expiration handling of stake voucher purchase transactions so as not to pollute the mempool with insufficiently valued stake vouchers;
• Fixes an issue with balance calculations for wallets with active stake vouchers;
• Adds various functional and unit test improvements

For all network participants running a PAI Coin Full Node, please immediately update to v2.0.2. THIS IS A REQUIRED UPDATE.

This tag includes the following changes:

• Ensure that stake vouchers belonging to the node’s wallet are set to automatically vote when chosen and automatically be revoked if their vote is missed;
• Resolve an issue that caused transactions to sometimes be ordered incorrectly when constructing a block;
• Resolve an issue causing certain reindex operations to incorrectly fail when encountering the first block mined with a non-whitelist coinbase address specified

This version is the initial release of mainnet hybrid consensus. No changes are required, simply re-building paicoind and paicoin-cli will prepare you for the hybrid consensus fork occurring at block: 154550 targeted for Oct 6, 2020.

Updated to include CVE-2018-17144 Bitcoin hotfix for duplicate transaction crash issue.

PAI Coin Core version 0.16.1 is now available from:

http://gitian-download.projectpai.com

Update coinbase addresses