Block chain technology: more than coins, Wal-Mart will be used to track food supply chain-IT information
Beijing time on November 23 messages, block chain technique used in coins has gradually come out of the financial sector. Now, Wal-Mart is prepared to use the technology to track the food supply chain and identify and recall tainted products.
In essence, block chain is a CAPTCHA block Lian data to the General Ledger. Verification code for each data block before the reference one, thereby creating a continuous full chain. Because of this, all data chunks will always be in accordance with the order preserved when they are added, provides a built-in validation system. More importantly, the block chain does not need to be stored in a single location, but can be dispersed among different computers, but can still keep a record of interconnected.
This technology was first used to ensure the safety of remittances, become the currency of the underlying technology. But other industries have also recently begun to use this technique. For example,IBM in February this year to provide enterprises with chain of blocks as a service (blockchain-as-a-service), aimed primarily at the logistics industry, especially in the food supply .
Central to this philosophy is that food from farms to factories, and eventually on the shelves can be tracked. Using tags and sensor will block in the General Ledger records the location, temperature, and other statistical data.
Wal-Mart in October this year with IBM and Tsinghua University tracked from the farm to the shelves of pork. Wal-Mart in the United States used the block chain technology to track packaging products. The company's hope that when the problem occurs (such as occurred during the transport of meat contamination) to quickly find the affected product, and for the first time and recalled.
"It so that they may understand the process from source to finished product. "Market research company NPD analyst maxieer·Kehan (Marshal Cohen) said," If the outbreak of Escherichia coli, they also may be the first to find sources. This is a huge improvement. ”
For Wal-Mart the retail businesses that serve 260 million customers a week, efficient tracking system can also help the cost of saving a lot of money : avoid wasted no problems because of the precautions to be taken.
Wal-Mart this week with the latest news of the pilot project update. "Is proceeding smoothly, in line with expectations. " The company's Vice President of food safety fulanke·yanasi (Frank Yiannas) said. If pilot project continues to be successful, Wal-Mart is also planned in China and the United States will block chain technology for more food.
区块链技术：不止用于比特币，沃尔玛将用来追踪食品供应链 - IT资讯
北京时间11月23日上午消息，比特币所使用的区块链技术已经逐步走出金融行业。现在，沃尔玛也准备利用这项技术追踪食品供应链，并识别和召回受到污染的产品。
从本质上讲，区块链技术是一个利用验证码把数据区块连在一起的总账。每个数据区块的验证码都会参照之前的一个，从而创造一条连续的完整链条。正因如此，所有的数据区块都会永远按照其被添加时的顺序保存下来，提供了一种固有的验证系统。更重要的是，区块链不需要存储在单一地点，而是可以分散在不同电脑中，但依然可以保留相互连接的记录。
这项技术最初用于确保汇款安全，成为比特币的底层技术。但最近其他行业也纷纷开始利用这种技术。例如，IBM今年2月就为企业提供区块链即服务（blockchain-as-a-service），主要瞄准物流行业，尤其是食品供应领域。
这一理念的核心是，可以对食品从农场到工厂并最终上架的过程进行追踪。借助标签和传感器，便可在区块链总账中记录产品的位置、温度和其它统计数据。
沃尔玛今年10月就与IBM和清华大学合作追踪从农场到货架的猪肉。沃尔玛还在美国使用区块链技术追踪包装产品。该公司希望在出现问题时（例如在运送肉类的过程中发生污染）快速找到受影响的产品，并第一时间下架和召回。
“这使之可以了解从源头到成品的过程。”市场研究公司NPD分析师马歇尔·科翰（Marshal Cohen）说，“如果爆发大肠杆菌，他们也可以第一时间找到来源。这是一种巨大的提升。”
对于沃尔玛这种每周服务2.6亿顾客的零售企业而言，高效的追踪系统还可以帮助其节约不菲的成本：避免因为要采取预防措施而浪费大量没有问题的产品。
沃尔玛本周更新了这个试点项目的最新消息。“目前进展顺利，符合预期。”该公司食品安全副总裁弗兰克·亚纳斯（Frank Yiannas）说。如果试点项目继续取得成功，沃尔玛还计划在中国和美国两国将区块链技术用于更多食品。