6.2.1 `beta-3`测试网 (The `beta-3` testnet)

The beta-3 network is the latest Fuel testnet. It expands on the features of beta-2, introducing P2P networking and the ability to run synchronizing full nodes.

beta-3 网络是最新的 Fuel 测试网。它扩展了 beta-2 的功能，引入了 P2P 网络和运行/同步全节点的能力。

Ethereum contracts (Goerli):

以太坊合约（Goerli）：

FuelMessagePortal: 0xE6B0E27F85abaCfC5149642c30F4BE9a878Aa4e9

FuelChainConsensus: 0x4b4b74b2E5CD9775793779619C3547b7863EbEca

FuelERC20Gateway: 0x8083634a1A5092D3234657092e5CF74655191B8D

The ERC-20 Gateway contract on Georli Ethereum is at 0x8083634a1A5092D3234657092e5CF74655191B8D.

Georli 以太坊上的 ERC-20 网关合约位于 0x8083634a1A5092D3234657092e5CF74655191B8D。 Goerli block explorer: https://goerli.etherscan.io/ Goerli区块浏览器：https://goerli.etherscan.io/ 🚰 Faucet - Use the faucet to get test ETH to deploy contracts with or to interact with contracts. Available here: https://faucet-beta-3.fuel.network/. 🚰 水龙头 - 使用水龙头获取测试 ETH ，部署合约或与合约交互。在此处获取：https://faucet-beta-3.fuel.network/。

📃 GraphQL endpoint - The Fuel Core node uses GraphQL instead of JSON RPC. A playground for the public GraphQL endpoint for beta-3 is available at https://beta-3.fuel.network/playground. GraphQL 端点 - Fuel Core 节点使用 GraphQL 而不是 JSON RPC。 beta-3 的公共 GraphQL 端点的游乐场可在 https://beta-3.fuel.network/playground 获得。

🔍 Block explorer - A block explorer (still heavily in development) is available at https://fuellabs.github.io/block-explorer-v2/. Be sure to select beta-3 from the dropdown on the top right.

🔍 区块浏览器 - 区块浏览器（仍在密集开发中）可在https://fuellabs.github.io/block-explorer-v2/.请务必从右上角的下拉列表中选择beta-3。

Join the Fuel Labs Discord and head to the 🧪︱testnet channel to get support from our team. 加入 Fuel Labs Discord 并前往🧪︱testnet channel 频道，获得我们团队的支持。

SDK版本控制 (SDK Versioning)

Version 0.38.0 or higher is the recommended version of the TS SDK on beta-3. 0.38.0 或更高版本是 beta-3 上推荐的 TS SDK 版本。

Version 0.39.0 or higher is the recommended version for the Rusk SDK on beta-3. 0.39.0 或更高版本是 beta-3 上 Rusk SDK 的推荐版本。

工具链配置 (Toolchain Configuration)

To configure the optimal toolchain for beta-3, ensure you have fuelup installed, then run the following command:

要为 beta-3 配置最佳工具链，请确保您已安装 fuelup，然后运行以下命令：

fuelup self update

Then install the beta-3 toolchain with

然后安装 beta-3 工具链

fuelup toolchain install beta-3

This installs the following components and versions: 这将安装以下组件和版本：

• forc 0.37.0

• forc-explore 0.28.1

• forc-index 0.7.0

• forc-wallet 0.2.2

• fuel-core 0.17.8

• fuel-indexer 0.7.0

To set the beta-3 toolchain as your default, run 要将 beta-3 工具链设置为默认工具链，请运行

$ fuelup default beta-3
default toolchain set to 'beta-3-aarch64-apple-darwin'

谓词(Predicate)

Messages intended for contracts use a pre-defined predicate as the message recipient. This predicate allows anyone to relay the message to the target contract and only the target contract. Once the contract receives the message it can see who originated it along with any special message payload and processes it accordingly. Since anyone can relay the message using this predicate it opens up possibilities for automated message processing as a service.

用于合约的消息，使用预定义谓词作为消息接收者。谓词允许任何人将消息中继到目标合约，并且只能转发到目标合约。一旦合约收到消息，它就可以看到是谁发出的消息以及任何特殊的消息负载，并相应地处理。由于任何人都可以使用此谓词中继消息，因此它开辟了将消息自动处理作为一种服务的可能性。

The predicate root for the beta-3 testnet is beta-3 测试网的谓词root是 0x4df15e4a7c602404e353b7766db23a0d067960c201eb2d7a695a166548c4d80a.