The block chain is really the revolutionary part of Bitcoin.

区块链可以说是比特币最具有革命性的一部分

What's really unique about it is it's all public

它的独特性在于区块链是公开的

so you can run the Bitcoin algorithm on your computer

因此你可以在自己的电脑上运行比特币算法

and your computer's inspecting every single transaction

你的电脑可以检查每一笔交易

to be sure that it actually followed the rules,

来确保一切都是遵循规则的

and the rules are really what Bitcoin is.

而比特币的本质正是规则

You know, that's the rules of the system, that's the algorithm.

这是个有规则的系统 是算法

It says things like,

比如它说

"You can only send money to one person at once,"

"你一次只能向一个人转账"

and we all agree to those rules.

我们都同意这个规定

And Bitcoin has one other characteristic

比特币还有另一个特点

which it shares with cash.

这点和现金一样

It can be very hard to trace.

难以被追踪

Well, what's controversial about Bitcoin is that

比特币备受争议的一点是

it goes back to something quite like cash.

它很像现金

It's not like a bank account

但不像银行那样

where a government investigator can just call up the bank

政府调查员直接打电话给银行

and get all the records of who I've ever transacted with

就能轻松地拿到

without any effort at all.

我每一笔交易的记录

You know, if they want to go and find out where I got my Bitcoins,

但如果他们想查出我在哪得到的比特币

they're going to have to ask me.

他们就要来问我本人

They're going to have to investigate.

还需要调查

重点解释：

1.agree to 同意； 答应

例句：We must agree to differ on this.

我们得承认在这一问题上有分歧。

2.share with 分享

例句：I have very happy news to share with you.

我有很高兴的消息要告诉你。

3.at all 完全

例句：It's not at all that bad.

这根本没有那么坏。