@ -6,9 +6,9 @@ The RaspiBlitz is powered by the RaspberryPi. The processing power of this Singl
## Is downloading the blockchain secure?
The downloaded Blockchain is pre-indexed and pre-validated. That is secure enough because if the user gets a "manipulated" blockchain it would not work after setup. The beginning of the downloaded blockchain needs to fit the genesis block (in bitcoind software) and the end of the downloaded blockchain needs not match with the rest of the bitcoin network state - hashes of new block distrubuted within the peer-2-peer network need to match the downloaded blockchain head. If beginning and end of the chain From a user perspektive a manipulated blockchain would simply just dont work.
The downloaded Blockchain is pre-indexed and pre-validated. That is secure enough because if the user gets a "manipulated" blockchain it would not work after setup. The beginning of the downloaded blockchain needs to fit the genesis block (in bitcoind software) and the end of the downloaded blockchain needs not match with the rest of the bitcoin network state - hashes of new block distrubuted within the peer-2-peer network need to match the downloaded blockchain head. So if you downloaded a manipulated blockchain it would simply just dont work in practice.
There might be theoretical scenarios why it would be bad for the whole network if anybody is downloading a prepared blockchain and not syncing and self-validating every block, but with a lot of self-validating full nodes already out there, just putting some RaspiBlitz with a downloaded blockchain into the mix and runnig as a self-valifating full node from that point on, is practically just strengthening the the overall network.
There might be theoretical scenarios why it would be bad for the whole network if anybody is downloading a prepared blockchain and not syncing and self-validating every block, but with a lot of self-validating full nodes already out there, just putting some RaspiBlitz with a downloaded blockchain into the mix and runnig as a self-valifating full node from that point on, is practically just strengthening the the overall network. And dont forget, the most important part of running a full node is to validate the new blocks summited by the miners - to balance out there power and to keep the Bitcoin network running by our rules.
If you have any link to a more detailed discussion of this topic, please add it here for people to do their own research.