Question 1

What was the primary objective of the 'SpaceChain' project launched via a SpaceX Falcon 9 rocket in 2017?

Accepted Answer

To demonstrate a multi-signature blockchain satellite node

Question 2

Which company partnered with SpaceChain to test a multisig blockchain transaction on the International Space Station in 2021?

Accepted Answer

Nanoracks

Question 3

What is the technical term for the blockchain platform designed by the Filecoin Foundation to incentivize decentralized data storage for space imagery?

Accepted Answer

IPFS

Question 4

In 2021, a digital artist sold a 3D animation of a rotating coin on Mars as an NFT; what was the specific landing site featured in the animation?

Accepted Answer

Jezero Crater

Question 5

The 'Space-Based Blockchain' protocol developed by the company Blockstream utilizes what medium to broadcast Bitcoin transaction data globally?

Accepted Answer

Satellite-based radio transponders

Question 6

Which celestial body's surface area was used as the conceptual scale for the maximum supply of the 'MoonCoin' cryptocurrency project?

Accepted Answer

The Moon

Question 7

In orbital mechanics, what issue does 'Proof of Space and Time' (used by Chia) attempt to solve regarding traditional mining?

Accepted Answer

Energy-intensive proof-of-work consumption

Question 8

What cryptographic challenge arises when attempting to synchronize a distributed ledger between Earth and a Mars-based colony due to the speed of light?

Accepted Answer

Variable latency synchronization

Question 9

The 'Doge-1' mission to the Moon, funded entirely by Dogecoin, was commissioned to carry what specific payload?

Accepted Answer

A sensory-equipped CubeSat

Question 10

Which blockchain project focused on decentralized Earth observation data creates a market for satellite telemetry?

Accepted Answer

PlanetChain

Question 11

When synchronizing a blockchain node on a spacecraft, what phenomenon must be accounted for according to the Theory of General Relativity?

Accepted Answer

Gravitational time dilation

Question 12

The 'Starlink' satellite network has been proposed by analysts as a potential infrastructure backbone for which type of cryptocurrency network?

Accepted Answer

Off-grid mesh networks

Question 13

What is the primary vulnerability of proof-of-work mining in high-radiation environments like deep space?

Accepted Answer

Single-event upsets (bit flips)

Question 14

Which cryptocurrency network utilizes the 'InterPlanetary File System' (IPFS) as a core component for storing its data structure?

Accepted Answer

Filecoin

Question 15

The term 'Genesis Block' in blockchain parallels which astronomical concept describing the origin of a celestial body?

Accepted Answer

Accretion disk formation

Question 16

Which space agency has publicly explored the use of blockchain for secure communication and command integrity of satellite constellations?

Accepted Answer

NASA

Question 17

What specific cryptographic mechanism is utilized in space-based blockchains to ensure data integrity despite solar radiation interference?

Accepted Answer

Error-correcting codes (ECC)

Question 18

The 'OrbitCoin' project focused on using which orbital characteristic to timestamp blockchain entries?

Accepted Answer

Sidereal rotation rates

Question 19

In a decentralized space network, why is 'Proof of History' considered more efficient than 'Proof of Work' for long-range communication?

Accepted Answer

It acts as a local clock for high-latency connections

Question 20

Which cryptocurrency token was notably sent to the International Space Station as part of a public awareness campaign in 2022?

Accepted Answer

Stellar

Cosmic Ledger: Cryptocurrency in the Final Frontier

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