Hiring D programmers (with cryptography and blockchain knowledge are preferred)

[rikki cattermole via Digitalmars-d-announce]

On 14/07/2017 3:17 PM, Vitor Rozsas wrote:
> On Friday, 14 July 2017 at 14:10:29 UTC, Vitor Rozsas wrote:
>> On Friday, 14 July 2017 at 04:47:24 UTC, rikki cattermole wrote:
>>> [...]
>>
>> What about a decentralized cryptocurrency (like bitcoin) but instead 
>> of the blockchain having transactions recorded on it, it could have 
>> something lighter... like a list of coins IDs ("cents", actually) and 
>> their owners, like:
>>
>> [...]
> 
> A transaction would simply change the owner of the cents and not create 
> any message in the database.
> Change the owner by changing the values (owner) of the keys (cents) 
> being transferred.

Blockchains work by making the entire history available to be verified 
and computed against. This is entirely its selling point.
So no, a block chain can never be fixed sized.

After all, how do you know that X owns the coin and not just some random 
node trying to corrupt and steal every bodies coins?