Block explorers are a crucial part of the development cycle, be it for inspecting if your deployments succeeded, or what happened when you called some method in your smart contract.

Otterscan is the most affordable way for regular people to run a mainnet block explorer locally. Since everything is local, everything is fast, private, and it runs on consumer grade hardware.

We also support all testnets, so developers can use it as part of their development cycle at all phases:

local dev/testing: use Otterscan + Anvil

testnet: use Otterscan + erigon running some testnet; use our sponsored hosted versions for testnets

mainnet: use Otterscan + erigon running mainnet

Since it is opensource, users don't need to depend on third-party services.