如何购买DDD币、如何购买DDD教程 答案:
1、通过交易平台购买Scry
交易平台
BSC交易SwapETH交易SwapPolygon交易SwapAvax交易SwapSol交易SwapOKC交易Swap货币兑换PancakeSwap在银河系最受欢迎的去中心化平台上交易、赚取和赢得加密货币。
BiswapBiswap是市场上第一个拥有三类推荐系统和最低平台交易费用(0.1%)的去中心化交换平台。我们是一个在Binance智能链网络上交换BEP-20代币的去中心化交换平台。这个网络保证了卓越的速度和更低的网络交易成本
KyberSwap BSCKyberSwap BSC 去中心化交易平台
DappRadar-BSCBSC去中心化交易聚合平台
DODO Swap面向Web3的 去中心化交易协议
Kine ProtocolKINE提供了一个[点对点]的衍生品市场,由链上数字资产支持的流动性池作为交易所内所有交易者的被动对手方。
Matcha-Dex聚合交易 在 Ethereum、Binance、Polygon、Avalanche、Celo、Fantom 等平台上进行交易!Matcha 为您在交易所找到最优惠的价格,并将它们组合成一笔交易。
MDEX swapMDEX.COM 支持BSC、HECO及ETH的去中心化跨鏈交易協議,多次位列CoinMarketCap、CoinGecko的DEX排行榜第一。
MsgSenderMsgSender是采用Trustwallet内核的去中心化多链钱包.
Uniswap (V2)Uniswap是一个在以太坊上自动交换代币的协议。它于2018年11月2日推出。Uniswap将自己描述为一个简单的智能合约接口,用于交换ERC20代币。它有一个正式的模型来汇集流动性储备。它作为交易者和流动性提供者的开源前端接口,致力于提供免费和去中心化的资产交换。
Uniswap(V3)在领先的去中心化加密货币交易协议上进行交换、赚取和建立。
TornadoTornado Cash 通过打破源地址和目标地址之间的链上链接来提高交易隐私。它使用一个智能合约,接受可以通过不同地址提取的 ETH 存款。为了保护隐私,可以使用中继器提取到没有 ETH 余额的地址。每当新地址提取 ETH 时,都无法将提取与存款联系起来,从而确保完全隐私。
1inch Exchange1inch是一个DeFi聚合器和一个具有智能路由的去中心化交易所。
Curve Finance曲线的目的是利用先进的粘合曲线创造深层的链上流动性。
SushiswapSushiSwap是一个Uniswap分叉,它的理念是将权力从VC手中剥离,并将其归还给社区。
Balancer自动化的投资组合管理器和去中心化交易平台
BancorBancor去中心化的交易协议
KyberSwap ETHKyberSwap ETH 去中心化交易
Loopring swapLoopring swap 去中心化交易
DYDX期货交易所dYdX是一家领先的非托管去中心化交易所的开发商,其使命是建立开放、安全和强大的金融产品。dYdX在以太坊上的审计智能合约上运行,在交易时不需要信任中央交易所。该交易所结合了去中心化交易所的安全性和透明度,以及中心化交易所的速度和实用性。
DODO Swap面向Web3的 去中心化交易协议
DappRadar-ETHETH去中心化交易聚合平台
Kine ProtocolKINE提供了一个[点对点]的衍生品市场,由链上数字资产支持的流动性池作为交易所内所有交易者的被动对手方。
Matcha-Dex聚合交易 在 Ethereum、Binance、Polygon、Avalanche、Celo、Fantom 等平台上进行交易!Matcha 为您在交易所找到最优惠的价格,并将它们组合成一笔交易。
MDEX swapMDEX.COM 支持BSC、HECO及ETH的去中心化跨鏈交易協議,多次位列CoinMarketCap、CoinGecko的DEX排行榜第一。
TokenlonTokenlon是基于0x协议的去中心化交易服务平台
QuickSwapQuickSwap 是一个去中心化交易所 (DEX),如果你想交易 MATIC,你绝对应该使用它。 它是Polygon网络的典型交易所,具有更低的gas成本和更容易交易的优势。
SushiswapSushiSwap是一个Uniswap分叉,它的理念是将权力从VC手中剥离,并将其归还给社区。
KyberSwap PolygonKyberSwap Polygon 去中心化交易平台
DappRadar-PolygonPolygon去中心化交易聚合平台
ParaSwap-Polygon交易市场Polygon链上交易市场
DODO Swap面向Web3的 去中心化交易协议
Matcha-Dex聚合交易 在 Ethereum、Binance、Polygon、Avalanche、Celo、Fantom 等平台上进行交易!Matcha 为您在交易所找到最优惠的价格,并将它们组合成一笔交易。
TraderJoeTrader Joe是你在Avalanche网络上的一站式去中心化交易平台。
SushiswapSushiSwap是一个Uniswap分叉,它的理念是将权力从VC手中剥离,并将其归还给社区。
Hurricane swapAvalanche 上的第一个跨链流动性 DEX
KyberSwap AVAXKyberSwap AVAX 去中心化交易
Lydia Swap-AVAXLydiaSwap-AVAXLydiaSwap-AVAX
Pangolin-AVAX一个社区驱动的去中心化交易所,用于 Avalanche 和以太坊资产 快速结算 , 低交易费用 ,和 提供支持的民主分配 由 Avalanche 。 穿山甲带给你 寻找和最大化收益的最佳交易机会。
RaydiumRaydium AcceleRaytor是自动化做市商Raydium旗下的IDO平台。平台目前已经成功IDO项目7个,包括近期热门的链游StarAtlas也选择了在Raydium上进行IDO。
Serum Portal在世界上最快、最强大的去中心化交易所进行交易。
DODO Swap面向Web3的 去中心化交易协议
DappRadar-SolSol去中心化交易聚合平台
SaberSabre 是一个面向全球范围的开放式交易和流动性平台,Sabre是在 Solana 上交易资产的自动化做市商。
OrcaOrca是在Solana区块链上兑换加密货币的最简单的地方。在Orca上,你可以比以太坊上的任何DEX更便宜、更快速、更自信地交换代币(感谢我们的公平价格指标)。此外,你可以向交易池提供流动性,以赚取交易费。
SlopeSlope Finance是一个由社区驱动的全栈平台,由建立在Solana之上的DEX、钱包和NFT部门组成,为用户提供极快的速度、几乎为零的交易费用和直观的界面。我们的目标是打造一个
Jswap去中心化交易协议
Cherry Swap樱桃交换
KswapOKExChain生态去中心化交易所
Pexpay | 币安投资币安投资全球最安全的C2C交易平台
数字钱包
BSC钱包ETH钱包Polygon钱包Avax钱包Sol钱包OKC钱包钱包工具MetaMaskMetaMask是一款最流行的支持多链的浏览器插件钱包。它允许用户与以太坊生态系统进行交互,该生态系统承载着大量分散的应用程序 (Dapps),而无需在他们的设备上下载整个区块链。因此,它是最好的以太坊钱包解决方案之一,可轻松访问去中心化交易所 (DEX)、游戏平台和许多其他应用程序。目前已开发手机移动端产品。
WalletconnectWalletConnect 是一种开放协议,用于在 Dapp 和钱包之间安全地通信。该协议使用中继服务器在两个应用程序和/或设备之间建立远程配对以中继有效负载。这些有效载荷通过两个对等方之间的共享密钥对称加密。配对由显示二维码或带有标准 WalletConnect URI 的深层链接的一个对等方发起,并在对方批准此配对请求时建立。
imTokenimToken 是一款区块链支持多链的数字资产钱包。如以太坊、比特币、Cosmos 等,它能帮助非常简单、安全地管理在区块链上的账户和资产。此外,它还内置 Dapp 浏览器。
Trust walletTrust Wallet 是被全球最大加密资产交易所 Binance 收购的,去中心化移动钱包应用程序。Trust Wallet 钱包支持购买、存储数字货币,查看价格、交易等。 此外,它还是一个去中心化应用程序(dApp)浏览器,其内置的 dApp 浏览器可与 dApp 建立通信,因此用户可以直接在智能手机或平板电脑上交易加密货币和收藏品。
TokenPocketTokenPocket是多链数字钱包。
Mathwallet麦子钱包是一个多平台(移动/桌面/硬件)通用加密钱包。麦子钱包支持存储 50 多个区块链和 3000 多个代币。
Binance WalletBinance Wallet是Binance Chain、Binance Smart Chain和Ethereum的加密货币钱包。它是存储、交换和赚取加密货币的一站式网关。它支持Firefox、Chrome和Brave浏览器。
HyperPayHyperPay是一款四位一体数字资产钱包,创新性融合托管钱包、自管钱包、共管钱包、硬件钱包于一体。
MetaMaskMetaMask是一款最流行的支持多链的浏览器插件钱包。它允许用户与以太坊生态系统进行交互,该生态系统承载着大量分散的应用程序 (Dapps),而无需在他们的设备上下载整个区块链。因此,它是最好的以太坊钱包解决方案之一,可轻松访问去中心化交易所 (DEX)、游戏平台和许多其他应用程序。目前已开发手机移动端产品。
WalletconnectWalletConnect 是一种开放协议,用于在 Dapp 和钱包之间安全地通信。该协议使用中继服务器在两个应用程序和/或设备之间建立远程配对以中继有效负载。这些有效载荷通过两个对等方之间的共享密钥对称加密。配对由显示二维码或带有标准 WalletConnect URI 的深层链接的一个对等方发起,并在对方批准此配对请求时建立。
imTokenimToken 是一款区块链支持多链的数字资产钱包。如以太坊、比特币、Cosmos 等,它能帮助非常简单、安全地管理在区块链上的账户和资产。此外,它还内置 Dapp 浏览器。
TokenPocketTokenPocket是多链数字钱包。
Mathwallet麦子钱包是一个多平台(移动/桌面/硬件)通用加密钱包。麦子钱包支持存储 50 多个区块链和 3000 多个代币。
Binance WalletBinance Wallet是Binance Chain、Binance Smart Chain和Ethereum的加密货币钱包。它是存储、交换和赚取加密货币的一站式网关。它支持Firefox、Chrome和Brave浏览器。
HyperPayHyperPay是一款四位一体数字资产钱包,创新性融合托管钱包、自管钱包、共管钱包、硬件钱包于一体。
MyetherwalletMEW (MyEtherWallet) 是一个免费的客户端界面,可帮助您与以太坊区块链进行交互。我们易于使用的开源平台允许您生成钱包、与智能合约交互等等。
Portis人们期望通过简单而熟悉的方式来加载和使用应用程序。设置钱包、签署交易和支付 gas 费用对主流用户来说可能是令人生畏的。您的 Dapp(去中心化应用程序)使用标准的 web3.js 方法与 Portis SDK 通信,这意味着它将自动与您现有的代码一起工作。 用户无需提前安装任何东西即可使用您的 DApp。使用 Portis,您的 DApp 已经与解决方案捆绑在一起,为他们提供了一种感觉熟悉的简单的浏览器内电子邮件/密码登录方法。
RainbowRainbow 是一种创建以太坊钱包、收集 NFT 和探索 Web3 新世界的有趣、简单且安全的方式。
ArgentArgent 是基于以太坊的移动钱包,可帮助用户轻松管理加密资产和身份,没有助记词、gas 费用或长地址,具备简单、安全和完全分布式等特点。
Ethereum 以太坊钱包以太坊是社区运营的技术,为加密货币以太坊(ETH)和成千上万的去中心化应用程序提供动力。
CoinbaseCoinbase 钱包支持超过 4,000 种代币和整个世界的去中心化应用程序
MetaMaskMetaMask是一款最流行的支持多链的浏览器插件钱包。它允许用户与以太坊生态系统进行交互,该生态系统承载着大量分散的应用程序 (Dapps),而无需在他们的设备上下载整个区块链。因此,它是最好的以太坊钱包解决方案之一,可轻松访问去中心化交易所 (DEX)、游戏平台和许多其他应用程序。目前已开发手机移动端产品。
WalletconnectWalletConnect 是一种开放协议,用于在 Dapp 和钱包之间安全地通信。该协议使用中继服务器在两个应用程序和/或设备之间建立远程配对以中继有效负载。这些有效载荷通过两个对等方之间的共享密钥对称加密。配对由显示二维码或带有标准 WalletConnect URI 的深层链接的一个对等方发起,并在对方批准此配对请求时建立。
imTokenimToken 是一款区块链支持多链的数字资产钱包。如以太坊、比特币、Cosmos 等,它能帮助非常简单、安全地管理在区块链上的账户和资产。此外,它还内置 Dapp 浏览器。
TokenPocketTokenPocket是多链数字钱包。
Mathwallet麦子钱包是一个多平台(移动/桌面/硬件)通用加密钱包。麦子钱包支持存储 50 多个区块链和 3000 多个代币。
Portis人们期望通过简单而熟悉的方式来加载和使用应用程序。设置钱包、签署交易和支付 gas 费用对主流用户来说可能是令人生畏的。您的 Dapp(去中心化应用程序)使用标准的 web3.js 方法与 Portis SDK 通信,这意味着它将自动与您现有的代码一起工作。 用户无需提前安装任何东西即可使用您的 DApp。使用 Portis,您的 DApp 已经与解决方案捆绑在一起,为他们提供了一种感觉熟悉的简单的浏览器内电子邮件/密码登录方法。
Wallet-AVAX钱包Avalanche 钱包是一个简单、安全、非托管的钱包,用于存储 Avalanche 资产。
MetaMaskMetaMask是一款最流行的支持多链的浏览器插件钱包。它允许用户与以太坊生态系统进行交互,该生态系统承载着大量分散的应用程序 (Dapps),而无需在他们的设备上下载整个区块链。因此,它是最好的以太坊钱包解决方案之一,可轻松访问去中心化交易所 (DEX)、游戏平台和许多其他应用程序。目前已开发手机移动端产品。
WalletconnectWalletConnect 是一种开放协议,用于在 Dapp 和钱包之间安全地通信。该协议使用中继服务器在两个应用程序和/或设备之间建立远程配对以中继有效负载。这些有效载荷通过两个对等方之间的共享密钥对称加密。配对由显示二维码或带有标准 WalletConnect URI 的深层链接的一个对等方发起,并在对方批准此配对请求时建立。
imTokenimToken 是一款区块链支持多链的数字资产钱包。如以太坊、比特币、Cosmos 等,它能帮助非常简单、安全地管理在区块链上的账户和资产。此外,它还内置 Dapp 浏览器。
TokenPocketTokenPocket是多链数字钱包。
Mathwallet麦子钱包是一个多平台(移动/桌面/硬件)通用加密钱包。麦子钱包支持存储 50 多个区块链和 3000 多个代币。
MetaMaskMetaMask是一款最流行的支持多链的浏览器插件钱包。它允许用户与以太坊生态系统进行交互,该生态系统承载着大量分散的应用程序 (Dapps),而无需在他们的设备上下载整个区块链。因此,它是最好的以太坊钱包解决方案之一,可轻松访问去中心化交易所 (DEX)、游戏平台和许多其他应用程序。目前已开发手机移动端产品。
WalletconnectWalletConnect 是一种开放协议,用于在 Dapp 和钱包之间安全地通信。该协议使用中继服务器在两个应用程序和/或设备之间建立远程配对以中继有效负载。这些有效载荷通过两个对等方之间的共享密钥对称加密。配对由显示二维码或带有标准 WalletConnect URI 的深层链接的一个对等方发起,并在对方批准此配对请求时建立。
imTokenimToken 是一款区块链支持多链的数字资产钱包。如以太坊、比特币、Cosmos 等,它能帮助非常简单、安全地管理在区块链上的账户和资产。此外,它还内置 Dapp 浏览器。
TokenPocketTokenPocket是多链数字钱包。
Mathwallet麦子钱包是一个多平台(移动/桌面/硬件)通用加密钱包。麦子钱包支持存储 50 多个区块链和 3000 多个代币。
SlopeSlope Finance是一个由社区驱动的全栈平台,由建立在Solana之上的DEX、钱包和NFT部门组成,为用户提供极快的速度、几乎为零的交易费用和直观的界面。我们的目标是打造一个
PhantomPhantom 是用于访问部署在 Solana 区块链上的分布式应用程序的扩展。 该扩展程序将一个对象注入到每个网站的 javascript 上下文中,以便分散的应用程序可以与您的钱包进行交互,您也可以与应用程序进行交互。 Phantom 还允许用户创建和管理自己的身份(通过私钥、助记符和 Ledger 等硬件钱包),因此当去中心化应用程序想要执行交易并写入区块链时,用户可以获得一个安全界面来查看交易, 在批准或拒绝之前。 因为它为普通浏览器上下文添加了功能,所以 Phantom 需要读取和写入任何网页的权限。安全非常重视,Phantom 代码已经过顶级审计公司的审计。
MetaX数字货币钱包,DApp 入口,NFT 世界 —— 您想要的应有尽有
MetaMaskMetaMask是一款最流行的支持多链的浏览器插件钱包。它允许用户与以太坊生态系统进行交互,该生态系统承载着大量分散的应用程序 (Dapps),而无需在他们的设备上下载整个区块链。因此,它是最好的以太坊钱包解决方案之一,可轻松访问去中心化交易所 (DEX)、游戏平台和许多其他应用程序。目前已开发手机移动端产品。
WalletconnectWalletConnect 是一种开放协议,用于在 Dapp 和钱包之间安全地通信。该协议使用中继服务器在两个应用程序和/或设备之间建立远程配对以中继有效负载。这些有效载荷通过两个对等方之间的共享密钥对称加密。配对由显示二维码或带有标准 WalletConnect URI 的深层链接的一个对等方发起,并在对方批准此配对请求时建立。
科学家抢币利用科学工具快速抢币
智能全链导入钱包右上方点选Connect Wallet 之后,便可以直接将该网络汇入至你的metamask 钱包,一键添加全网智能链到小狐狸钱包,多功能添加工具。链表 帮助用户连接到 EVM 供电的网络 Chainlist 是 EVM 网络的列表。用户可以使用这些信息将他们的钱包和 Web3 中间件提供商连接到适当的链 ID 和网络 ID 以连接到正确的链。
GEMIT钱包检查的化工具,可帮助交易者做出有关他们所做投资的日常决策。 只需几个简单的步骤,您就可以快速获取有关您当前盈亏的信息,以及币安智能链上钱包中每个仓位的反射收益。
钱包多对多转账钱包多对多转账
代币批量归集代币批量归集工具
代币授权用于代币授权
Token 合约授权查询Token 合约授权查询
批量生产钱包批量生产钱包
批量查询余额用于批量查询钱包余额
批量发送代币用于批量发送代币
交易加速/取消 工具用于钱包Mtramask、WalletConnect 交易加速或取消。
Google Authenticator开启Google的登陆二步验证,用于加密账户登录安全
2、通过教程购买DDD
DDD是Scry.info项目的数字代币符号。Scry.info是一个基于区块链的量化数据提供和交易平台,目标是提供一个智能化区块链社会的数字合约引擎,让开发者和个人都可以在里面寻找到来自体育、娱乐、交通、气象、金融、农业、基因模型等数据源,并且鼓励全球更多的社区开发者、跨国组织、公司和个人写入数据源参与到区块链数据节点的集群智能认证中。
项目愿景
SCRY.INFO希望提供一个智能化区块链社会的数字合约引擎,让开发者和个人都可以在里面寻找到来自体育、娱乐、交通、气象、金融、农业、基因模型等数据源,并且鼓励全球更多的社区开发者、跨国组织、公司和个人写入数据源参与到区块链数据节点的集群智能认证(Using AuthenticationinCertification agreement Based Swarm Intelligence)中。
应用场景
1、面向所有预测市场应用的共享真实数据服务
在当前整个区块链生态中预测类应用是一个相当庞大的市场,然而很多预测类应用往往需要自行将现实数据引入区块链,而且由于这些开发商开发的初衷聚焦于应用之上,所以其他应用很难共享某一个预测市场应用中引入的数据。这样既造成了区块链资源的浪费也因为某个预测应用的用户基数过小导致表决结果真实度的不足。
SCRY.INFO提出统一的公共数据服务的概念,旨在打破每个预测应用之间的数据壁垒,例如A预测应用的数据在B预测应用缴纳了足够的费用的前提下也可以提供给B应用使用,费用统一使用SCRYCOIN进行结算。在这个基础之上,用于预测市场的数据也可以提供给商业报告,民意调查等类型应用使用,协议之中规定的各项流转费用,保证了各方参与者的权益。
2、数据提供者以及数据消费者的信息市场
如何让数据互通起来,发挥数据更大的价值呢?
SCRY.INFO为数据提供者提供了一套灵活的机制:除去为数据需求者提供其指定的数据,也可以独立发布数据,通过SCRY.INFO将这种数据推向整个市场:任何需要数据的数据需求者都可以通过向数据提供者以及数据公证人缴纳一次性查询费,来获取数据以及验证服务。这样就保证了数据提供者的独立性,降低了其对现有数据需求者的依赖。
这里数据消费者实际上是一个比较广泛的群体,如商业报告提供者就是一种典型的数据消费者,因为一般的商业报告中往往需要引用大量的可审查的数据,而SCRY.INFO的数据交易模型正好满足了这方面的需求。
例如:假设有一个数据提供者A创建了一份供应协议合约Y,并且通过了公证环节。这时报告提供者B在自己的报告合约Z中需要Y中的数据,这时,B支付查询费并查询Y中的数据并将数据保存在自己的Z合约中,并且确保在Z验证函数中含有对Y中验证API调用的代码。将来如果因为需要B出示Z合约中证明这份数据的来源时,求证者只需调用Z提供的验证代码即可。
3、商业智能投票热点营销工具
商业智能投票与市场热点营销调查也是一个高度依赖数据的行业。例如,一个商业主体想要调查到人们对于旗下品牌往年冬季服饰颜色的看法,以便为今年冬季服饰颜色的设计做个参考。按照以往经验,会有以下做法;发传单,然而这样人力成本高昂,效率低下;在官网上发起投票,送礼品,然而官网知名度低,参与人少;会向第三方中心化的机构购买数据,然而收费不低,并且真实性无法保障。
SCRY.INFO正希望为他们提供高效的服务,例如:
品牌商机构可以在SCRY.INFO发起一个公投协议合约(悬赏性质)并填入相关选项,描述,公投人数上限,合法公投比例等参数,然后发布。SCRY.INFO生态中的参与者注意到这个悬赏令,直接进入到公证环节,来对设定的选项进行投票。投票成功结束后,参与者拿走赏金(SCRYCOIN),NGO得到样本数据,双赢。且品牌商在明年,后年等都能查看此次结果,这样通过不断积累,SCRY MSPs(促进参与者互动和交易的多面平台)可以形成以年为单位的用户意向趋势表,为他们未来迎合市场的政策提供真实可靠的数据指导意见。
4、面向个人以及企业的存证服务
同时,SCRY.INFO提供的数据协议通过特殊设置后,也能够提供现实生活中,诸如财产公证,遗嘱公证之类的存证服务。这类服务不光具备传统意义上的功能,还具有一些独特的优势。首先,这些电子协议具备区块链去中心化以及不可更改的特性,这些特性对于存证来讲尤其重要;其次,SCRY.INFO提供的协议本身具有可引用的特性,由此带来的是以一种明确的形式逻辑可证且可审查的方式对这些存证直接使用,这是传统意义上的存证服务难以做到的。
具体使用方式为:首先构建一个委托供应协议合约,并将数据写入者以及数据公证人设置为白名单模式,同时指定数据写入者以及数据公证人的身份,之后数据写入者以及数据公证人在写入数据以及公证数据时都附带上各自针对这张合约的签名数据,提交合约以后便产生了一份多方签名认定的数据存证。
在技术方面,既然是以数据储存为核心的区块链,那么如何储存数据就成为了他们最需要突破的技术难关。
SDBC是一个新的去中心化的数据存储区块链,目前的小数据放置在ETH上,大点的数据通过索引的形式放在IPFS上,但这些第三方存储或多或少都不太满足SCRY.INFO对数据的存储和查询行为。他们计划开发一个比较符合SCRY.INFO查询业务的用于存储和查询的区块链,能为SCRY.INFO提供存储量更大,数据更安全,查询速度更便捷的基础服务。
为了达到他们的数据储存需求,开发中有几个重要目标:
1)保证存储数据的完整性:通过对数据分块存储,这些数据块存在于全网节点的某一个位置。使用MerkleTree对其进行完整性验证,但也会针对查询做存储的优化处理,配合查询使用。
2)数据存储的安全性:设置不同的安全级别来对存入的数据进行签名(DSA,RSA,ECDSA等),以及多方签名的形式.使用MerkelTree来对节点的合法性进行验证。使用密码学安全的伪随机数生成器(CSPRNG)来生成私钥,并通过椭圆曲线算法来得到对应的公钥。计划使用对公钥变形之后的地址来作为每个节点的标识,即公钥由经过SHA运算之后变为地址的形式:Base58(identification+公钥+head4(SHA256(SHA256(公钥)))等。
3)能提供类似SQL的简易化操作命令来完成对较为复杂的业务查询:提供一个类似Azure云数据库的轻量级的分布式关系型数据存储和处理。计划采用基于三维分档布隆过滤器表(TF)的SCRYO-Top查询算法。试验结果表明,该算法能够避免重复访问数据对象,并能以较低的误判率实现大规模数据的高效查询处理。与NRA和BPA相比,当属性列表超过4个时,开销明显降低,适合面向大规模数据的查询处理应用。
相关链接:
https://www.qukuaiwang.com.cn/szhb/2720.html###
How to buy DDD coins, how to buy DDD tutorial answers:
1. Purchase Scry through the trading platform
Trading platform
BSC trades SwapETH Trade SwapPolygon Trade SwapAvax Trade SwapSol Trade SwapOKC Trade Swap Currency Exchange PancakeSwapTrade, earn and win crypto on the galaxy’s most popular decentralized platform.
BiswapBiswap is the first decentralized exchange platform on the market with a three-category recommendation system and the lowest platform transaction fee (0.1%). We are a decentralized exchange platform for exchanging BEP-20 tokens on the Binance Smart Chain network. This network guarantees excellent speed and lower network transaction costs
KyberSwap BSCKyberSwap BSC decentralized trading platform
DappRadar-BSCBSC decentralized trading aggregation platform
DODO SwapDecentralized trading protocol for Web3
Kine ProtocolKINE provides a [point-to-point] derivatives market, and the liquidity pool supported by digital assets on the chain serves as the basis for all exchanges A trader’s passive counterparty.
Matcha-Dex aggregation trading Trade on Ethereum, Binance, Polygon, Avalanche, Celo, Fantom and other platforms!Matcha finds you the best prices on exchanges and combines them into one trade.
MDEX swapMDEX.COM supports the decentralized cross-chain trading protocol of BSC, HECO and ETH, and has repeatedly ranked first in the DEX rankings of CoinMarketCap and CoinGecko.
MsgSenderMsgSender is a decentralized multi-chain wallet using the Trustwallet core.
Uniswap (V2)Uniswap is a protocol for automatically exchanging tokens on Ethereum. It was launched on November 2, 2018. Uniswap describes itself as a simple smart contract interface for exchanging ERC20 tokens. It has a formal model for pooling liquidity reserves. It serves as an open source front-end interface for traders and liquidity providers, committed to providing free and decentralized asset exchange.
Uniswap(V3)Exchange, earn and build on the leading decentralized cryptocurrency trading protocol.
TornadoTornado Cash improves transaction privacy by breaking the on-chain link between source and destination addresses. It uses a smart contract that accepts withdrawals that can be made through different addressesETH deposit withdrawn. To protect privacy, relayers can be used to withdraw to addresses with no ETH balance. Whenever a new address withdraws ETH, the withdrawal cannot be linked to the deposit, ensuring complete privacy.
1inch Exchange1inch is a DeFi aggregator and a decentralized exchange with smart routing.
Curve FinanceThe purpose of Curve Finance is to create deep on-chain liquidity using advanced bonding curves.
SushiswapSushiSwap is a Uniswap fork with the idea of taking power away from VCs and returning it to the community.
BalancerAutomated portfolio manager and decentralized trading platform
BancorBancor decentralized trading protocol
KyberSwap ETHKyberSwap ETH decentralized trading
Loopring swapLoopring swap decentralized exchange
DYDX Futures ExchangedYdX is a leading developer of non-custodial decentralized exchanges whose mission is to build an open, secure and Powerful financial products. dYdX runs on audited smart contracts on Ethereum, eliminating the need to trust a central exchange when trading. The exchange combines the security and transparency of a decentralized exchange with the speed and utility of a centralized exchange.
DODO SwapDecentralized trading protocol for Web3
DappRadar-ETHETH decentralized trading aggregation platform
Kine ProtocolKINE provides a [point-to-point] In the derivatives market, the liquidity pool backed by on-chain digital assets serves as the passive counterparty for all traders within the exchange.
Matcha-Dex aggregation trading Trade on Ethereum, Binance, Polygon, Avalanche, Celo, Fantom and other platforms!Matcha finds you the best prices on exchanges and combines them into one trade.
MDEX swapMDEX.COM supports the decentralized cross-chain trading protocol of BSC, HECO and ETH, and has repeatedly ranked first in the DEX rankings of CoinMarketCap and CoinGecko.
TokenlonTokenlon is a decentralized trading service platform based on the 0x protocol
QuickSwapQuickSwap is a decentralized exchange (DEX). If you want to trade MATIC, you should definitely use it it. It is a typical exchange of the Polygon network, with lower gas costs and easier transactionsAdvantage.
SushiswapSushiSwap is a Uniswap fork with the idea of taking power away from VCs and returning it to the community.
KyberSwap PolygonKyberSwap Polygon decentralized trading platform
DappRadar-PolygonPolygon decentralized trading aggregation platform
ParaSwap-Polygon trading marketPolygon on-chain trading market
DODO SwapDecentralized trading protocol for Web3
Matcha-Dex aggregation trading is conducted on Ethereum, Binance, Polygon, Avalanche, Celo, Fantom and other platforms!Matcha finds you the best prices on exchanges and combines them into one trade.
TraderJoeTrader Joe is your one-stop decentralized trading platform on the Avalanche network.
SushiswapSushiSwap is a Uniswap fork with the idea of taking power away from VCs and returning it to the community.
Hurricane swapThe first cross-chain liquidity DEX on Avalanche
KyberSwap AVAXKyberSwap AVAX decentralized exchange
Lydia Swap-AVAXLydiaSwap-AVAXLydiaSwap- AVAX
Pangolin-AVAXA community-driven decentralized exchange for Avalanche and Ethereum assets with fast settlement, low transaction fees, and democratic distribution powered by Avalanche. Pangolin brings you the best trading opportunities to find and maximize your profits.
RaydiumRaydium AcceleRaytor is the IDO platform of the automated market maker Raydium. The platform currently has 7 successful IDO projects, including the recently popular blockchain game StarAtlas, which also chose to conduct its IDO on Raydium.
Serum PortalTrade on the world’s fastest and most powerful decentralized exchange.
DODO SwapDecentralized trading protocol for Web3
DappRadar-SolSol decentralized trading aggregation platform
SaberSabre is an open and global A trading and liquidity platform, Saber is an automated market maker for assets traded on Solana.
OrcaOrca is the easiest place to exchange cryptocurrencies on the Solana blockchain. On Orca, you can swap tokens cheaper, faster, and more confidently than any DEX on Ethereum (thanks to our Fair Price Metric). Additionally, you can provide liquidity to trading pools to earn trading fees.
SlopeSlope Finance is a community-driven, full-stack platform consisting of DEX, wallet and NFT sectors built on Solana, providing users with blazing speeds, near-zero transaction fees and Intuitive interface. Our goal is to build a
Jswapdecentralized trading protocol
Cherry Swapcherry exchange
KswapOKExChain ecological decentralized exchange
Pexpay | Binance InvestmentBinance Investment The world’s most secure C2C trading platform
Digital Wallet
BSC Wallet ETH Wallet Polygon Wallet Avax Wallet Sol Wallet OKC Wallet Wallet Tool MetaMaskMetaMask is the most popular browser plug-in wallet that supports multiple chains. It allows users to interact with the Ethereum ecosystem, which hosts a large number of decentralized applications (Dapps), without downloading the entire blockchain on their devices. Therefore, it is one of the best Ethereum wallet solutions that provides easy access to decentralized exchanges (DEX), gaming platforms, and many other applications. Currently, mobile products have been developed.
WalletconnectWalletConnect is an open protocol for secure communication between Dapps and wallets. This protocol uses a relay server to establish a remote pairing between two applications and/or devices to relay payloads. These payloads are symmetrically encrypted using a shared key between the two peers. Pairing is initiated by a peer displaying a QR code or deep link with a standard WalletConnect URI, and is established when the peer approves the pairing request.
imTokenimToken is a digital asset wallet whose blockchain supports multiple chains. Such as Ethereum, Bitcoin, Cosmos, etc., it can help manage accounts and assets on the blockchain very simply and securely. Additionally, it has a built-in Dapp browser.
Trust walletTrust Wallet is a decentralized mobile wallet application acquired by Binance, the world's largest crypto asset exchange. Trust Wallet supports purchasing and storing digital currencies, viewing prices, transactions, and more. Additionally, it is a decentralized application (dApp) browser with built-in dApThe p browser can communicate with dApps so users can trade cryptocurrencies and collectibles directly from their smartphone or tablet.
TokenPocketTokenPocket is a multi-chain digital wallet.
MathwalletMathwallet is a multi-platform (mobile/desktop/hardware) universal encryption wallet. Math Wallet supports storage of more than 50 blockchains and more than 3,000 tokens.
Binance WalletBinance Wallet is a cryptocurrency wallet for Binance Chain, Binance Smart Chain and Ethereum. It is a one-stop gateway to store, exchange and earn cryptocurrencies. It supports Firefox, Chrome and Brave browsers.
HyperPayHyperPay is a four-in-one digital asset wallet that innovatively integrates managed wallets, self-managed wallets, co-managed wallets, and hardware wallets.
MetaMaskMetaMask is the most popular browser plug-in wallet that supports multiple chains. It allows users to interact with the Ethereum ecosystem, which hosts a large number of decentralized applications (Dapps), without downloading the entire blockchain on their devices. Therefore, it is one of the best Ethereum wallet solutions that provides easy access to decentralized exchanges (DEX), gaming platforms, and many other applications. Currently, mobile products have been developed.
WalletconnectWalletConnect is an open protocol for secure communication between Dapps and wallets. This protocol uses a relay server to establish a remote pairing between two applications and/or devices to relay payloads. These payloads are symmetrically encrypted using a shared key between the two peers. Pairing is initiated by a peer displaying a QR code or deep link with a standard WalletConnect URI, and is established when the peer approves the pairing request.
imTokenimToken is a digital asset wallet whose blockchain supports multiple chains. Such as Ethereum, Bitcoin, Cosmos, etc., it can help manage accounts and assets on the blockchain very simply and securely. Additionally, it has a built-in Dapp browser.
TokenPocketTokenPocket is a multi-chain digital wallet.
MathwalletMathwallet is a multi-platform (mobile/desktop/hardware) universal encryption wallet. Math Wallet supports storage of more than 50 blockchains and more than 3,000 tokens.
Binance WalletBinance Wallet is Binance Chain, Binance Smart Chain and EtherEUM cryptocurrency wallet. It is a one-stop gateway to store, exchange and earn cryptocurrencies. It supports Firefox, Chrome and Brave browsers.
HyperPayHyperPay is a four-in-one digital asset wallet that innovatively integrates managed wallets, self-managed wallets, co-managed wallets, and hardware wallets.
MyetherwalletMEW (MyEtherWallet) is a free client interface that helps you interact with the Ethereum blockchain. Our easy-to-use open source platform allows you to generate wallets, interact with smart contracts, and more.
PortisPeople expect a simple and familiar way to load and use applications. Setting up a wallet, signing transactions, and paying gas fees can be intimidating for mainstream users. Your Dapp (decentralized application) communicates with the Portis SDK using standard web3.js methods, which means it will automatically work with your existing code. Users don’t need to install anything in advance to use your DApp. With Portis, your DApp is already bundled with the solution, giving them a simple in-browser email/password login method that feels familiar.
RainbowRainbow is a fun, easy, and secure way to create an Ethereum wallet, collect NFTs, and explore the new world of Web3.
ArgentArgent is an Ethereum-based mobile wallet that helps users easily manage crypto assets and identities. There are no mnemonics, gas fees or long addresses. It is simple, secure and fully distributed.
Ethereum Ethereum WalletEthereum is the community-run technology that powers the cryptocurrency Ethereum (ETH) and thousands of decentralized applications.
CoinbaseCoinbase wallet supports over 4,000 tokens and an entire world of decentralized applications
MetaMaskMetaMask is the most popular browser plug-in wallet that supports multiple chains. It allows users to interact with the Ethereum ecosystem, which hosts a large number of decentralized applications (Dapps), without downloading the entire blockchain on their devices. Therefore, it is one of the best Ethereum wallet solutions that provides easy access to decentralized exchanges (DEX), gaming platforms, and many other applications. Currently, mobile products have been developed.
WalletconnectWalletConnect is an open protocol for secure communication between Dapps and wallets. This protocol uses a relay server to establish a remote pairing between two applications and/or devices to relay payloads. These payloads pass through two pairs ofShared key symmetric encryption between equal parties. Pairing is initiated by a peer displaying a QR code or deep link with a standard WalletConnect URI, and is established when the peer approves the pairing request.
imTokenimToken is a digital asset wallet whose blockchain supports multiple chains. Such as Ethereum, Bitcoin, Cosmos, etc., it can help manage accounts and assets on the blockchain very simply and securely. Additionally, it has a built-in Dapp browser.
TokenPocketTokenPocket is a multi-chain digital wallet.
MathwalletMathwallet is a multi-platform (mobile/desktop/hardware) universal encryption wallet. Math Wallet supports storage of more than 50 blockchains and more than 3,000 tokens.
PortisPeople expect a simple and familiar way to load and use applications. Setting up a wallet, signing transactions, and paying gas fees can be intimidating for mainstream users. Your Dapp (decentralized application) communicates with the Portis SDK using standard web3.js methods, which means it will automatically work with your existing code. Users don’t need to install anything in advance to use your DApp. With Portis, your DApp is already bundled with the solution, giving them a simple in-browser email/password login method that feels familiar.
Wallet-AVAX WalletAvalanche Wallet is a simple, secure, non-custodial wallet for storing Avalanche assets.
MetaMaskMetaMask is the most popular browser plug-in wallet that supports multiple chains. It allows users to interact with the Ethereum ecosystem, which hosts a large number of decentralized applications (Dapps), without downloading the entire blockchain on their devices. Therefore, it is one of the best Ethereum wallet solutions that provides easy access to decentralized exchanges (DEX), gaming platforms, and many other applications. Currently, mobile products have been developed.
WalletconnectWalletConnect is an open protocol for secure communication between Dapps and wallets. This protocol uses a relay server to establish a remote pairing between two applications and/or devices to relay payloads. These payloads are symmetrically encrypted using a shared key between the two peers. Pairing is initiated by a peer displaying a QR code or deep link with a standard WalletConnect URI, and is established when the peer approves the pairing request.
imTokenimToken is a digital asset wallet whose blockchain supports multiple chains. Such as Ethereum, Bitcoin, Cosmos, etc., it can helpHelps manage accounts and assets on the blockchain very simply and securely. Additionally, it has a built-in Dapp browser.
TokenPocketTokenPocket is a multi-chain digital wallet.
MathwalletMathwallet is a multi-platform (mobile/desktop/hardware) universal encryption wallet. Math Wallet supports storage of more than 50 blockchains and more than 3,000 tokens.
MetaMaskMetaMask is the most popular browser plug-in wallet that supports multiple chains. It allows users to interact with the Ethereum ecosystem, which hosts a large number of decentralized applications (Dapps), without downloading the entire blockchain on their devices. Therefore, it is one of the best Ethereum wallet solutions that provides easy access to decentralized exchanges (DEX), gaming platforms, and many other applications. Currently, mobile products have been developed.
WalletconnectWalletConnect is an open protocol for secure communication between Dapps and wallets. This protocol uses a relay server to establish a remote pairing between two applications and/or devices to relay payloads. These payloads are symmetrically encrypted using a shared key between the two peers. Pairing is initiated by a peer displaying a QR code or deep link with a standard WalletConnect URI, and is established when the peer approves the pairing request.
imTokenimToken is a digital asset wallet whose blockchain supports multiple chains. Such as Ethereum, Bitcoin, Cosmos, etc., it can help manage accounts and assets on the blockchain very simply and securely. Additionally, it has a built-in Dapp browser.
TokenPocketTokenPocket is a multi-chain digital wallet.
MathwalletMathwallet is a multi-platform (mobile/desktop/hardware) universal encryption wallet. Math Wallet supports storage of more than 50 blockchains and more than 3,000 tokens.
SlopeSlope Finance is a community-driven, full-stack platform consisting of DEX, wallet and NFT sectors built on Solana, providing users with blazing speeds, near-zero transaction fees and Intuitive interface. Our goal is to build a
PhantomPhantom is an extension for accessing distributed applications deployed on the Solana blockchain. The extension injects an object into each website's javascript context so that decentralized applications can interact with your wallet and you can interact with the application. Phantom also allows users to create and manage their own identities (via private keys, mnemonics, and hardware wallets like Ledger), so when goingWhen a centralized application wants to execute a transaction and write it to the blockchain, users can get a secure interface to review the transaction, before approving or rejecting it. Because it adds functionality to a normal browser context, Phantom requires permission to read and write any web page. Security is taken very seriously, and Phantom code has been audited by top auditing firms.
MetaXDigital currency wallet, DApp entrance, NFT world - everything you want
MetaMaskMetaMask is the most popular browser plug-in wallet that supports multiple chains. It allows users to interact with the Ethereum ecosystem, which hosts a large number of decentralized applications (Dapps), without downloading the entire blockchain on their devices. Therefore, it is one of the best Ethereum wallet solutions that provides easy access to decentralized exchanges (DEX), gaming platforms, and many other applications. Currently, mobile products have been developed.
WalletconnectWalletConnect is an open protocol for secure communication between Dapps and wallets. This protocol uses a relay server to establish a remote pairing between two applications and/or devices to relay payloads. These payloads are symmetrically encrypted using a shared key between the two peers. Pairing is initiated by a peer displaying a QR code or deep link with a standard WalletConnect URI, and is established when the peer approves the pairing request.
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Intelligent whole-chain import into walletAfter clicking Connect Wallet on the upper right, you can directly import the network to your metamask wallet. One-click to add the entire network smart chain to the Little Fox Wallet, a multi-functional adding tool. Chainlist Helps users connect to EVM powered networks Chainlist is a list of EVM networks. Users can use this information to connect their wallets and Web3 middleware providers to the appropriate chain ID and network ID to connect to the correct chain.
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2. Purchase DDD through tutorials< /p>
DDD is the digital token symbol of the Scry.info project. Scry.info is a blockchain-based quantitative data provision and trading platform. The goal is to provide a digital contract engine for an intelligent blockchain society, allowing developers and individuals to find information from sports, entertainment, transportation, Meteorology, finance, agriculture, genetic models and other data sources, and encourage more community developers, multinational organizations, companies and individuals around the world to write data sources to participate in the cluster intelligence certification of blockchain data nodes.
Project Vision
SCRY.INFO hopes to provide a digital contract engine for an intelligent blockchain society so that developers and individuals can Find data sources from sports, entertainment, transportation, meteorology, finance, agriculture, genetic models, etc., and encourage more community developers, multinational organizations, companies and individuals around the world to write data sources and participate in blockchain data nodes In Using AuthenticationinCertification agreement Based Swarm Intelligence.
Application scenarios
1. Shared real data service for all prediction market applications
Prediction in the entire current blockchain ecosystem Prediction market applications are a huge market. However, many prediction applications often need to introduce real-world data into the blockchain by themselves. And because the original intention of these developers is to focus on applications, it is difficult for other applications to share a prediction market application. data introduced in. This not only results in a waste of blockchain resources, but also causes a lack of authenticity in the voting results because the user base of a certain prediction application is too small.
SCRY.INFO proposes the concept of a unified public data service, aiming to break the data barriers between each prediction application. For example, the data of A prediction application can also be provided to B prediction application on the premise that B prediction application pays sufficient fees. When used by B application, all fees will be settled using SCRYCOIN. On this basis, the data used for market prediction can also be provided for business reports, opinion polls and other types of applications. The various transfer fees specified in the agreement ensure the rights and interests of all participants.
2. Information market for data providers and data consumers
How to make data interoperable and maximize the value of data?
SCRY.INFO provides a flexible mechanism for data providers: in addition to providing data requesters with their specified data, it can alsoPublish data independently and promote this data to the entire market through SCRY.INFO: any data demander who needs data can obtain data and verification services by paying a one-time inquiry fee to the data provider and data notary. This ensures the independence of the data provider and reduces its dependence on existing data demanders.
Data consumers here are actually a relatively broad group. For example, business report providers are a typical data consumer, because general business reports often need to quote a large amount of reviewable data, and SCRY.INFO The data transaction model just meets this need.
For example: Suppose a data provider A creates a supply agreement contract Y and passes the notarization process. At this time, report provider B needs the data in Y in its own reporting contract Z. At this time, B pays the query fee and queries the data in Y and saves the data in its own Z contract, and ensures that it is in the Z verification function. Contains code for verifying API calls in Y. In the future, if B needs to prove the source of this data in Z contract, the verifyer only needs to call the verification code provided by Z.
3. Business Intelligence Voting Hot Marketing Tool
Business Intelligence Voting and Market Hot Marketing Survey is also an industry that relies heavily on data. For example, a business entity wants to survey people's opinions on the colors of its brand's winter clothing in previous years, so as to provide a reference for the design of this year's winter clothing colors. According to past experience, the following methods will be used: handing out leaflets, but this is expensive and inefficient; launching voting on the official website and sending gifts, but the official website has low visibility and few participants; purchasing data from a third-party centralized organization. However, the fees are high and the authenticity cannot be guaranteed.
SCRY.INFO is hoping to provide them with efficient services, for example:
Brand organizations can initiate a referendum agreement contract (reward nature) on SCRY.INFO and fill in the relevant options, description, maximum number of referendums, and legality Referendum ratio and other parameters are then released. Participants in the SCRY.INFO ecosystem noticed this bounty order and directly entered the notarization process to vote on the set options. After the voting ends successfully, the participants take away the bounty (SCRYCOIN), and the NGO gets the sample data, a win-win situation. And brands can view the results next year, the year after, etc. Through continuous accumulation, SCRY MSPs (a multi-faceted platform that promotes participant interaction and transactions) can form a year-by-year user intention trend table to cater to them in the future. Market policies provide real and reliable data guidance.
4. Certificate deposit services for individuals and enterprises
At the same time, the data protocol provided by SCRY.INFO can also provide certificate deposit services in real life, such as property notarization and will notarization, after special settings. This type of service not only has traditional functions, but also has some unique advantages. First, these electronic agreements are decentralized and immutable on the blockchainCharacteristics, these characteristics are particularly important for evidence storage; secondly, the protocol itself provided by SCRY.INFO has citation characteristics, which brings about a clear formal logic provable and reviewable way. The deposit certificate can be used directly, which is difficult to achieve with certificate deposit services in the traditional sense.
The specific usage method is: first build a commissioned supply agreement contract, set the data writer and data notary to whitelist mode, and specify the identities of the data writer and data notary, and then the data writer When the data notary writes the data and notarizes the data, they will attach their own signature data for this contract. After the contract is submitted, a data certificate certified by multi-party signatures will be generated.
In terms of technology, since it is a blockchain with data storage as its core, how to store data has become the technical difficulty they most need to break through.
SDBC is a new decentralized data storage blockchain. Currently, small data is placed on ETH, and larger data is placed on IPFS in the form of indexes. However, these third-party storages are more or less The data storage and query behavior of SCRY.INFO is not very satisfactory. They plan to develop a blockchain for storage and query that is more in line with SCRY.INFO's query business, which can provide SCRY.INFO with basic services with larger storage capacity, safer data, and faster query speed.
In order to meet their data storage needs, there are several important goals in development:
1) Ensure the integrity of stored data: By storing data in blocks, these data blocks exist in a certain location in the nodes of the entire network . MerkleTree is used to verify its integrity, but it will also be optimized for storage and used in conjunction with queries.
2) Security of data storage: Set different security levels to sign the stored data (DSA, RSA, ECDSA, etc.), as well as in the form of multi-party signatures. Use MerkelTree to verify the legitimacy of the node. Use a cryptographically secure pseudo-random number generator (CSPRNG) to generate the private key, and use the elliptic curve algorithm to obtain the corresponding public key. It is planned to use the address after deformation of the public key as the identification of each node, that is, the public key is changed into the form of the address after SHA operation: Base58 (identification+public key+head4 (SHA256 (SHA256 (public key)))), etc.
3) Can provide simplified operation commands similar to SQL to complete more complex business queries: Provide a lightweight distributed relational data storage and processing similar to Azure cloud database. It is planned to use the SCRYO-Top query algorithm based on the three-dimensional binning Bloom filter table (TF). Experimental results show that the algorithm can avoid repeated access to data objects and achieve efficient query processing of large-scale data with a low misjudgment rate. Compared with NRA and BPA, when the attribute list exceeds 4, the overhead is significantly reduced, which is suitable forQuery processing applications for large-scale data.
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