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Self Test 2 - Introduction to Bitcoin Computing - CS251P (
Please test your understanding of the concepts from week by going through these problems. The more you learn, the more you can ensure you're ready to start coding your own Bitcoin-powered apps next week.
Which of these is "Bitcoin computing"?
An English-to-Chinese machine translation algorithm that takes bitcoin and English text and returns the Chinese translation
An English-to-Chinese machine translation service that takes bitcoin and English text and returns the translation - even if there’s a human in the loop
A file server that receives bitcoin and returns a digital good
A game of skill that you can enter by paying bitcoin, which may pay out bitcoin if you’re successful in answering the questions (“Who wants to be a millionaire”)
All of the above
Which of these is the main advantage of using off-chain transactions?
They're more secure
They're more transparent
They have low transaction costs
They are currently more scalable than on-chain transactions
What API calls can be outsourced using micropayments?
Any remote API call
Only calls that have a high per-use cost
Only calls that depend on complicated technology, like Google Maps
Only calls that use cloud services
Only calls that require registering for an API key before using
After you joined the market with "21 join", what was your IP address for the zt0 interface? (Instructions to get this are in the lab 2 document.)
Were you able to get someone on the Slack channel to buy your endpoint?
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