# Problem

"How to transfer the sensors readings (quality of the opinion) into a secure dissemination strategy that is similar to the existing approach?"

# Comparison

Feature Classical approach Blockchain approach
Number of used opinions for voting strategy Last 2 opinions in robot's memory Last 2 opinions in robot's blockchain
Dissemination State Time: proportional to sensor readings p (sample from an exponential distribution with pg, g = 10) Use one of the strategies described below
Exploration State Time: Sample from an exponential distribution (sample from an exponential distribution with σ = 10) Time: Sample from an exponential distribution (sample from an exponential distribution with σ = 10)\nDisconnect from peers

# Strategies

### Strategy 1: Amount of transactions

• Send a transaction with 1 ether in each timestep of the dissemination state
• Expected behavior:

### Strategy 2: Direct modulation

• Send one transaction each time a robot enters the dissemination state, include amount of ether that is proportional to the quality of the opinion
• Expected behavior:

### Strategy 3: Mining time

• Make mining time proportional to the quality of the opinion
• Expected behavior:

### Strategy 4: Hash-puzzle

• Robots have to solve a (hash-based) puzzle, whose difficulty is proportional to the quality of the opinion they want to send
• Expected behavior:

### Strategy 5: Most similar

• Only connect to neighbors in the dissemination state
• The longer a robot is in the state, the more other robots will receive its opinion
• Problem: When do robots mine? Only in the last x seconds (fixed)? Or for a time proportional to their opinion?
• Expected behavior:

## Alternative

• Use an alternative approach that is not similar to Gabri's approach
• Expected behavior:
• Advantages: Can tailor approach to the blockchain
• Disadvantages: Might be harder to compare the approach and show its advantages