- Sep 2018
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www.windley.com www.windley.com
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Even when the profile is self hosted, the information can still be trusted because institutions can digitally sign accomplishments so others can be assured they're legitimate.
The inference here is that the profile is encrypted and signed data. The current technology that implements such capabilities is of course the blockchain.
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The LRS stores the stream of all learning activities by the student. These learning activities include things like being admitted to a program, registering for a class, completing a reading assignment, taking a quiz, attending class, getting a B+ in a class, or completing a program of study. In short there is no learning activity that is too small or too large to be recorded in the LRS. The LRS stores a detailed transcript of learning events.
The LRS described here is an extension of the typical notion of an LRS which has in the past been more narrowly defined in terms of the learning interactions students have in the context of a course. PW extends this by including information about being admitted to a program, or certification of completing a course of study, e.g.,major completion.
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- Jun 2016
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github.com github.com
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Does this mean the entire blockchain does NOT need to be maintained by every node in a permissionless network? Or does this apply only to smart contracts? I ask that because the next paragraph refers to a contract specific question making me question if this whole section is pertinent only to smart contract issues.
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The data field has no function by default, but the virtual machine has an opcode with which a contract can access the data; as an example use case, if a contract is functioning as an on-blockchain domain registration service, then it may wish to interpret the data being passed to it as containing two "fields", the first field being a domain to register and the second field being the IP address to register it to. The contract would read these values from the message data and appropriately place them in storage.
I'm not a cryptocurrency person so I'm not clear what the purpose of this function means. For example, what does it mean that message is acting as a contract functioning as an on-blockchain domain registration service? My ignorance I know.
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proof of stake, calculating the weight of a node as being proportional to its currency holdings and not its computational resources
While I much prefer PoS to PoW, it is a concern that the weigh of a node is proportional the amount of holdings it currently possesses. That exacerbates the asymmetry of resources/wealth in the system, favoring those who are successful & therefore earn coins over those who for whatever reason aren't. It isn't clear what the challenge is by which coins are earned.
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