Skip to content

Latest commit

 

History

History
55 lines (43 loc) · 2.1 KB

readme.md

File metadata and controls

55 lines (43 loc) · 2.1 KB
Raw

##Node Lifecycle

###Responding to Requests ####Requests for Neighbors - Expected JSON "neighborhash": string ####Requests for Data - Expected JSON "filehash": string

    Returns
    "data": string, "nexthash": string, "neighbor": string
    Gives data and next hash, as well as nearest known neighbor to that hash, if applicable.

    OR
    "neighbor": "some_hash_here", state: "known" || "unknown"

    If no data present, gives nearest known neighbor.  If unknown, returns random neighbor.
  • Requests for Directions to Neighbors with Data

####Monitoring the Network

  • Determine if Files are Hosted:
    • With the necessary redundancy
    • By the Neighbors who are expected to be hosting certain files

###Threats

  • Sybil Attacks Huge numbers of false nodes reporting false data
  • Spamming Attack There must be some cost to adding data
  • Baiting It must not be rational to constantly offer hosting, receive bitcoins, and then turn off.

###Solutions

  • Money flows as an informational signal
    • Send bitcoins to honest nodes
  • Nodes are ranked by trustworthiness
    • Being Trustworthy is either
    • Being upvoted by other nodes (scaling with their trustworthiness)
    • Sending bitcoins to other honest nodes

##Guarding Each node is a 'guardian'. It tells you where to go to find the next file/neighbor. But it also reports on its knowledge about the trustworthiness of others. This means - did they host the files they said they would host over the requisite amount of time - are they consistently lying / how much do i agree with them on everything.

##Hosting Each node may host files: a tuneable amount of data of course.

##The ask-for-hosting cycle

  • start with a file, convert it deterministically to the right hash
  • send out "who should host this?" request. Request reverberates until nodes who cant find nearest neighbors offer to host. Originator gets a list of nodes who should host. List will be too long. Originator picks short list based on minimizing distance between node hashes and the file's hash.