BlockTime

Screenshots

Problem Statement

This project compiles a single file with every mainnet Ethereum block alongside the timestamp which that block was mined. This is critical to computing cost basis. Accountants can look through this file to find those timestamps. Those can then be used to calculate a more accurate cost-basis which the IRS requires when determining gains and losses.

Solution

This is a fetch in a loop from any rpc endpoint! I performed this with TypeScript. The pieces were stitched together with bun to execute the typescript code. One thing hacky that is interesting is that making this many rpc requests is challenging so it hits rpc endpoint in a round-robin fashion to ensure I don't hit the same RPC with quite as many requests.