JustBet is integrating two major types of Chainlink oracles into its decentralised gaming platform — Chainlink VRF and Chainlink Price Feeds. These two secure and reliable oracle solutions will pave the way for an entirely new decentralised gaming experience, one in which external data is used to augment the security and functionality of several critical on-chain gaming functions.

JustBet selected Chainlink because it’s the most time-tested and fully functional decentralised oracle solution in the blockchain industry, already securing billions of dollars in value for leading decentralised applications. …

JustBet正在将两种主要类型的Chainlink 预言机（Chainlink VRF和Chainlink数据喂价）集成到其去中心化的游戏平台。这两个安全可靠的预言机解决方案将为全新去中心化游戏体验铺平道路，其中一个解决方案使用外部数据来增强几个关键的链上游戏功能的安全性和功能性。

JustBet之所以选择Chainlink，是因为Chainlink是区块链行业中历经时间考验最长、功能最全的去中心化预言机解决方案，并已经为领先的去中心化应用带来了数十亿美元的价值。重要的是Chainlink数据喂价和VRF已经在Polygon主网无缝集成实时运行。

Chainlink VRF和Chainlink数据喂价的初始集成将用于演示及展示Chainlink和Polygon的组合功能如何为用户带来真正增强和可信赖的去中心化及完全自主的游戏体验。

了解JustBet及其对预言机的需求

JustBet是使用智能合约构建的完全去中心化自主的游戏平台，无须人工交互，任何时候无法篡改空投。它将在以太坊2层扩展方案Polygon网络上运行。Polygon的好处包括快速交易和每笔交易的廉价燃料成本，从而可以创建高度可扩展和低成本的应用以获得优化的游戏体验。

构建一个去中心化的游戏平台最大的挑战之一是智能合约无法访问链外的现实世界数据。这意味JustBet上的智能合约应用在触发链上操作（如资产价格、随机性和游戏结果）之前不能引用外部数据源。解决外部连接问题需要使用去中心化的预言机网络这个安全的区块链中间件，预言机网络代表智能合约获取链外数据并将其交付给链上，并使用它来触发链上操作，如交易结算或触发游戏内事件。

JustBet如何使用Chainlink预言机

JustBe调研许多预言机之后，JustBet确定Chainlink在Polygon上拥有最多样化和最安全的预言机服务。并可让我们集成已经被证明具有实际价值的预设的预言机解决方案，这不仅节省了大量的时间和资源（无须构建自己的解决方案），同时还降低了风险（使用未经验证的替代方案)。

使游戏平台可行的一个最重要的方面是能够证明游戏是可证明公平的（一种可以在游戏平台中分析和验证公平性的算法）。使游戏可证明公平的关键方法之一是证明生成的随机数具有防篡改和可验证的随机性来源，从而为每个人提供明确的证据，证明每个游戏对所有参与者都是公平的。由于JustBet是一个完全去中心化自主游戏平台，因此必须对游戏及其结果进行审计，并证明其是随机的并对所有玩家都具有不变的公平结果。

Chainlink-VRF（可验证随机功能）是一种专用于智能合约的安全且可验证的随机数发生器（RNG）。它的工作原理是通过组合未知的区块数据与预言机节点的预提交私钥以生成随机数和加密证明。JustBet智能合约仅在具有有效的加密证明时才会接受随机数输入，并且只有在VRF进程是防篡改的情况下才能生成加密证明。这为用户提供了直接在链上的自动化和可验证保证，即每个使用Chainlink VRF随机性的JustBet应用程序都是可证明公平的，并且不能被预言机、外部实体或JustBet团队篡改或预测。

除了Chainlink VRF之外，JustBet还将集成Chainlink的去中心化价格预言，以确保我们的下注证明机制。JustBet开采公式被完全重新设计，使用对数标准累积偏差和一个共同的“下注金额”的组合来确定用户获得的WINR奖励。下注证明机制依赖于Chainlink数据喂价将所有游戏交易转化为以美元计价的基准值。这一点非常重要，因此使用任何游戏内加密货币（如BTC和ETH）进行交易的用户将始终根据最新的公平市场价格获得新铸造的WINR代币奖励。

Chainlink数据喂价由Aave和Syntheix等顶级项目所依赖并是在Defi中使用最广泛的预言机解决方案。由领先的区块链和安全DevOps团队运行的独立、经安全审查的预言机节点组成的去中心化网络为它们提供了安全保障。每个节点从多个高级数据聚合器中获取中间值，每个聚合器都从所有相关集中和分散的交易所中提取价格，按交易量加权，并删除异常值/虚假交易量以获得全球市场价格。然后，预言机网络进一步聚合所有节点的值以创建单个聚合的价格更新。这种分散的体系结构确保了预言机和数据源级别的高正常运行时间和抗篡改能力并提供了不受各种数据操纵攻击的高精度数据。

Welcome to our dealer’s table where we will give you a run down of the most important events & announcements that occurred in the last few weeks without the unnecessary clutter!

ERC20 migration is done

You might remember from our article about migration from Tron to Ethereum and use Polygon layer-2 plasma network for a better development environment and a far smoother user experience. The token generation event has been completed on Apr 2nd 2021.

Why have we migrated to Polygon?

The answer to that is simple: it makes sense from a development perspective and from a scalability perspective, not to mention it’s better for users as the transaction fees…

Vesting schedule extended

The team, advisors and investors have unanimously agreed to extend the vesting schedule and to slow down the rate of vesting. For total transparency, we are sharing both the original schedule and the revised ones below along with the link to the 500M locked tokens.

The extension is being done to show the public and community our commitment to the project. It was recognised that the platform transition from the Tron network to the Ethereum Layer 2 Polygon network has led to many delays in users having access to the platform. …

What is the JustBet Liquidity Pool Program?

We have launched the V1 LP program so that anyone who has staked WINR tokens on Uniswap can then stake their Uniswap WINR LP tokens on the JustBet Liquidity pool program. This is our first program with other pools planned to follow.

We have laid out all the instructions below so that you will know exactly what to do.

Here’s how the LP program works

We have 20M WINR tokens in the pool which will yield over 100,000 blocks (about a 2 week period). Each block will yield 200 WINR/block which will be shared proportionally by how many UNI WINR LP tokens you stake. …

Summary of Key announcements

We have multiple announcements so please read each section

1. WINR ERC-20 Contract Address and token generation event

2. Uniswap listing announcement

3. Announcing new WINR LP staking pool

4. Bitmart withdrawals update

5. Token Swap your TRC-20 to ERC-20

6. Announcing our Throne Card NFT program to win even more

Have a read through to see what’s happening and to check out our new roadmap!

1. Token Generation Event of WINR on Etherscan

We are excited to announce that WINR tokens have now been generated in ERC-20. We have created a single WINR contract which resides on both the Polygon and the Ethereum Networks.

Token Migration Announcement

We are excited to announce that WINR tokens will be migrated on Bitmart this Friday, April 2nd, 2021 at 7am UTC.

All TRC-20 WINR tokens must be received in Bitmart by 6am UTC on the 31st March to be eligible for automated token migration to the ERC-20 WINR tokens. After this time, Bitmart will no longer accept TRC-20 WINR tokens so please make note of this transition.

Please note that we will announce the Token Generation Event and the WINR token address in Part 2 of this series. No WINR tokens have yet been created on the Ethereum network.

Please…

Next week we will be making some further announcements about the migration of the JustBet platform to Polygon (Matic). This announcement will be made on Tuesday, 30th March 2021.

We have a couple of steps we are requesting of all users:

Step 1: Unstaking WINR tokens immediately

In advance of these announcements, we request that all users please make sure they have unstaked their WINR tokens on the platform. These tokens are TRC-20 and will not work once the platform goes live again.