是否有必要使用加密货币进行支付，使用区块链？

Question

我正在这个区块链世界记录。基本上，我想做一些网络应用程序，其中用户决定进行捐赠，并希望看到谁进行了捐赠，哪个实体。我有几个疑问，第一个：

1-可以使用javascript使用区块链吗？（智能合约可以用javascript完成吗？）

2-如果捐赠使用区块链，是否有必要使用加密货币？或者你可以用真金白银进行交易（用一些手段比如Paypal）

3-真钱可以通过某些方式转移吗，比如使用区块链的paypal？

非常感谢，你的回答将为我提供更多的资料

Answer 1

我认为任何协议都不可能在Java脚本中实现它们的智能合约，但是您可以在这两种语言之间构建一个转换器，这可能会使开源社区中的其他人受益。

所以你想让一些工程师为你做一些工作，在这种情况下，构建一个网络应用程序。有几种方法可以做到这一点，这里有一些想法：

a） 发行代币，根据您新业务的成功来支付利润，您可能能够在不与任何特定加密或法定货币绑定的协议上实现这一点。用户可以使用exchange将您的令牌转换为他们最喜爱的令牌。

b） 找一家私募股权基金或风险投资基金，让他们为此买单。

c）忘掉区块链，只需向您最喜欢的工程师支付项目费用。

Answer 2

可以使用javascript使用区块链吗？（智能合约可以用javascript完成吗？）

 Every blockchain has a SDK, the part of the software which lets you 
 interact   with the real blockchain( A decentralise ledger). There 
 are  generally two parts in the Blockchain , One is client and one 
 is processor. 

As you must have guessed, Client is the one who sends the transaction, 
This transaction must satisfy certain rules in order to be accepted by 
the transaction processor. If the transaction gets validated by 
transaction processor, The transaction will be added to the block alongwith 
other transactions and this block will then be added to the blockchain. 
Copied to all other nodes (Forks are a different story)

Generally Most blockchains lets you interact with the blockchain through 
ABCI which is just an interface to convert your transaction into 
a format understandable by the blockchain processor.

Some blockchains has their fixed transaction processing logic like Ethereum for 
security and some lets you write your own transaction processing logic like 
Sawtooth, Fabric etc.

Permissioned and some public blockchains like Hyperledger projects and 
cosmos SDK lets you write your own application layer logic for Blockchain, 
So yes, You can write those transactions in Javascript or any other programming 
language, as long as it satisfies the interface.

Public blockchain deals with tokens having real worth. Their transaction logic 
is already fixed, but some of them does provide javascript API's like NEO 
(Not   sure about that)

2-如果捐赠使用区块链，是否有必要使用加密货币？或者你可以用真金白银进行交易（用一些手段比如Paypal）

 You can do that and put the donation receipt on Blockchain linked with 
 real identities of people. This way if anybody wants to check who pays 
 how much donation, They can query blockchain for the user address.

3-真钱可以通过某些方式转移吗，比如使用区块链的paypal？

This can also be done, but this will involve using a crypt exchange,
centralised or decentralise. You can convert the real money into crypto 
of your choice at one end and vice versa at the other hand.

注意：这是基于我对加密货币的有限知识。在执行此建议之前，请咨询更多人或任何专业公司。