wiki VS otterscan

For a more decentralized approach, TrueBit offers a solution for off-chain computation. It involves solvers and verifiers who perform computations and verify them. In case of a challenge, an iterative verification process takes place on-chain. Ethereum miners act as judges to make a final ruling. TrueBit creates a computation market where decentralized applications can pay for verifiable computation outside of the network. This allows trustless smart contracts to perform various computational tasks securely.

That solution is undoubtedly Truebit. https://truebit.io/

Yes, it is on truebit.io site: "Truebit combines with bulletproofs to achieve compact, zero-knowledge proofs without trusted setup. "

There's already a whitepaper from 2018 covering the bridge between ethereum and Doge from the creator of Truebit protocol

Perhaps the ELI5 page from Truebit can help

I am planning to run about 4-5 validator instances at once with these being full archive nodes (since the same storage is used, and I think that a number of SSD's is a good investment if I have full introspective on transactions), at the same time host a Otterscan instance, and also possibly, but unrelated (although mentioning to give you the full spec) a personal HashiCorp Vault instance.

Otterscan

Explorer - I discovered Otterscan, an open source explorer that has similar UX to Etherscan

Things like otterscan that are a locally run instance of an etherscan like site are a step in the right direction, but there is still a lot to do in this regard for sure.

https://github.com/wmitsuda/otterscan

Have you looked at otterscan yet? https://github.com/wmitsuda/otterscan