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链课中视频哈希的妙用!

lemooljiang

Published: 08 Apr 2020 › Updated: 08 Apr 2020

链课中视频哈希的妙用!

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细心的朋友已经发现,链课中每上传一个视频都会在下方显示一个哈希码,这是ipfs网络的文件哈希码。没听过ipfs的朋友可要去做下功课啰。ipfs网络是基于内容寻址,也就是说,在任何ipfs网关都可以通过这个哈希码来访问你的视频文件!

在链课的《用户须知》中倒也提过这个方法。很简单,查询一个ipfs网络的公共网关,再把你的视频哈希值填在后面,就可以正常播放你的视频了。比如这样:https://gateway.ipfs.io/ipfs/QmQjwLDyBfh8zfvFkRmjZeka7XHzhqm9iYriGrgYJsgArD

目前ipfs网络的速度还是特别地慢,没有特别的实际价值。我们使用它,只是看好它预示的方向:一种去中心化的文件系统!

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