pull down to refresh

I'm a fan of running a node on old computers, and I came across this site that will sell you one with everything ready to go.
It seems like they load StartOS onto it and make sure everything is working.
I noticed that they don't ship it with a copy of the blockchain. If you trust them to install the OS and all that, what do you gain by doing IBD yourself?
Put differently, would you be interested in a device that came with the first 900,000 blocks already downloaded and verified?
102 sats \ 1 reply \ @Akg10s3 13h
If I'm interested..
reply
Dunno, just curious how people are thinking about trade-offs here.
reply
0 sats \ 1 reply \ @LOR3LORD 9h
commenting to come back to this so i can research it more when i have time. im new and want to know the purpose of purchasing a device that has the first 900k blocks already downloaded and verified. what is the benefit?
reply
it seems to me that the question is similar to what is the purpose of purchasing a device with the software preloaded onto it -- in both cases, it's handy to have someone else do something fiddly. Installing your own operating system is only a little more technically involved than installing bitcoin core and downloading and verifying the whole chain. And waiting for the initial block download to complete is kinda a pain in the ass. The only reason people do it is so they don't have to trust someone else -- but if you've already trusted them to install the OS on your computer, why wouldn't you also trust them to give you a copy of the chain?
reply
I think for the same reason you can't just bittorrent the blockchain, even if you somehow trusted the source. You basically need to replay all transactions in order to rebuild the spendable state, so that you can verify future transactions. By randomly getting the blocks from different network peers, you're corroborating the integrity of what's being transferred. But there are proposed optimizations: https://bitcoinops.org/en/topics/assumeutxo/
Seems like you could just spot check your chain and UTXO set though.
reply
I agree, except that I don't understand the difference between trusting someone else to install your OS and trusting someone else to give you an up-to-date copy of the chain. I'm sure there's some version of malware that could be put on a machine that man in the middles you when you try to sign a transaction over a certain threshold. Or it does this when you generate an address to receive.
My point is that in the case where you trust someone else to install software on a device both of you know will be used for bitcoin activities, why not trust them to give you a copy of the chain as well?
reply