There is no point of get the original chain. The first 1000 blocks were only .01 reward per block that is 1000 LHC. And it was stocked at 1003 that makes total of 4000 LHC. If you want to restart the project just start again from scratch.
The 1'st 1,000 Blocks where a value of 0.1 LHC per block which resulted in a supply of 100 LHC for PoW, It did stop at block 1003 yes but that has been fixed with the latest commits, Even the commits done back in 2017 fixed that issue. We see no point to restart as we are practically at the start anyway and we feel we would face bigger issues then when trying to deal with Yobit and them updating.
The total supply when the chain stopped at block 1003 was 101.04 LHC.
If we cannot get the original chain then yes we may have to re think about launching again but for now that is not an option for us.